150 Fast Cure 100% Solids Epoxy for One Day Full Broadcast Floors One Stop Epoxy 150 Fast Cure, commonly called 150FC, is a rapid cure 100% solids epoxy built specifically for full broadcast flooring systems. It is designed for full flake, quartz, sand, and other approved broadcast floors where the wet epoxy is completely covered with decorative or functional media. 150FC can perform three jobs in one application: primer, pigmented receiver coat, and moisture vapor barrier rated up to 12 lbs. This allows experienced installers to mechanically prepare the concrete, apply one epoxy layer, complete the broadcast, and move toward the topcoat without installing a separate primer or moisture vapor barrier when slab conditions are within the published product limits. At 75 degrees Fahrenheit, 150FC provides approximately 25 minutes of working time on the floor. Under a full broadcast, it cures in approximately 2 hours at 75 degrees Fahrenheit and can cure in as little as approximately 75 to 90 minutes in very warm conditions. Free shipping to the 48 contiguous states, and most orders ship out the same or next business day. Quick Answer: 150FC is a fast cure 100% solids epoxy for experienced installers building full broadcast floors. It combines a primer, pigmented receiver coat, and moisture vapor barrier rated up to 12 lbs in one application. Working time is approximately 25 minutes at 75 degrees Fahrenheit, and full broadcast floors can be ready for scraping and topcoating in approximately 2 hours at 75 degrees Fahrenheit or faster in warmer conditions. NOT FOR BEGINNERS 150FC is designed for experienced epoxy installers who understand fast cure materials, crew coordination, mixing, placement, broadcast timing, and jobsite temperature. Once Part A and Part B are combined, the installation moves quickly. If you are learning how to install epoxy flooring, use a slower and more forgiving epoxy system. What 150FC Is Built to Do 150FC is not intended to be a general purpose epoxy. Its strength is combining fast cure, full broadcast capability, and moisture vapor protection into a single resin layer. Application How 150FC Is Used Full Flake Floors Used as the pigmented receiver coat before broadcasting vinyl flakes to rejection. This is one of the primary uses for 150FC. Quartz Broadcast Floors Used as the resin layer that receives a full quartz broadcast in commercial and decorative flooring systems. Sand Broadcast Floors Receives a full sand broadcast where texture, additional build, or another resinous flooring layer is required. Other Approved Broadcast Media May be used with approved broadcast aggregate such as aluminum oxide when the complete flooring system calls for it. Moisture Vapor Control Provides moisture vapor resistance up to the published 12 lb rating when slab conditions and installation requirements are within the product limits. For a complete flake package with epoxy, vinyl flakes, and topcoat already matched to the floor size, see our Full Flake Epoxy Flooring Systems. Where 150FC Should Not Be Used 150FC must be buried beneath a complete broadcast. It is not the correct epoxy when the base coat itself will remain visible. Application Use 150FC? Full Flake Broadcast Yes Full Quartz Broadcast Yes Full Sand Broadcast Yes Partial Flake Floor No Solid Color Floor No Metallic Epoxy Base Coat No Exposed Epoxy Finish No 150FC is not UV stable and will amber when exposed to light. In a true full broadcast system, the epoxy is completely covered by vinyl flakes, quartz, sand, or another approved media before the clear wear coat is installed. That keeps the epoxy itself from remaining visible. For solid color floors, partial flake floors, and other applications where the epoxy remains visible, use our Self Leveling 100% Solids Epoxy instead. Why 150FC Works for One Day Full Flake Floors A traditional epoxy installation may require separate primer, epoxy, broadcast, cure, and topcoat stages spread across multiple days. 150FC is designed to compress that sequence. Mechanically prepare the concrete. Apply 150FC as the primer, moisture vapor control layer, and pigmented receiver coat. Broadcast the vinyl flakes, quartz, or sand to rejection while the epoxy remains wet. Allow the fast cure epoxy to harden. Scrape and vacuum the cured broadcast surface. Apply the specified clear topcoat. When the floor, temperature, crew, and complete system are appropriate, this sequence allows experienced installers to complete many full broadcast floors in one day. Working Time Changes With Temperature 150FC is fast, but it provides meaningful working time after it is properly mixed and immediately placed onto the floor. Jobsite Temperature Approximate Floor Working Time Below 75 degrees Fahrenheit Approximately 25 to 30 minutes 75 degrees Fahrenheit Approximately 25 minutes 76 to 85 degrees Fahrenheit Approximately 22 to 25 minutes 85 to 90 degrees Fahrenheit Approximately 20 to 22 minutes Important: Working time begins becoming relevant only after the mixed epoxy is spread onto the floor. Do not use the published floor working time as permission to leave mixed 150FC sitting in the bucket. Higher temperatures shorten working time. Fast Cure and Topcoat Timing Under a full broadcast, 150FC cures in approximately 2 hours at 75 degrees Fahrenheit. At temperatures above approximately 90 degrees Fahrenheit, cure can occur in as little as approximately 75 minutes. Actual timing depends on material temperature, slab temperature, surrounding air temperature, humidity, film build, and jobsite conditions. Do not begin scraping or topcoating simply because a fixed amount of clock time has passed. Verify that the broadcast surface is hard enough for the next step. Built In Moisture Vapor Barrier Up to 12 lbs 150FC provides moisture vapor resistance up to 12 lbs within its published product limits. This can eliminate a separate moisture vapor barrier coat on qualifying full broadcast projects. The 12 lb rating does not eliminate the need to evaluate the concrete. Test the slab before installation and compare the result with the current product requirements. If moisture exceeds the 150FC limit or the slab presents another moisture condition outside its intended use, select a dedicated moisture vapor barrier from our Primers and Moisture Vapor Barriers. For help understanding slab moisture before coating, review our Moisture Testing Before Installing Epoxy Flooring Guide. Coverage Rates Coverage must match the role 150FC is performing in the flooring system. Do not stretch the epoxy farther simply to increase square foot coverage. Application Coverage Per Gallon Coverage Per 3 Gallon Kit Pigmented Full Flake Receiver Coat 133 to 150 square feet 399 to 450 square feet Primer on Porous Concrete 150 to 200 square feet 450 to 600 square feet Higher Build Approved Broadcast Application 100 to 135 square feet 300 to 405 square feet For most full flake receiver coat planning, use the 133 to 150 square foot per gallon range. The exact rate should match the complete system, concrete condition, required film build, and moisture requirements. Available Colors 150FC is currently available in the following options: Clear Black Light Gray Medium Gray Dark Gray White Tan For a full flake floor, select the appropriate pigmented receiver coat so any small gaps between flakes do not expose an unwanted background color. Concrete Preparation Fast cure epoxy does not compensate for poor concrete preparation. The slab must be clean, sound, mechanically opened, and ready to receive a high build resin. Remove existing coatings, curing compounds, sealers, adhesive, oil, grease, and other contaminants. Mechanically prepare concrete to approximately CSP 3. Vacuum the prepared floor thoroughly. Repair cracks, spalls, pits, and damaged concrete before coating. Test the slab for moisture before relying on the built in 12 lb moisture vapor rating. Contractor Tip: With 150FC, the entire job should be staged before mixing begins. Have the floor prepared, flakes or aggregate opened, squeegee and rollers ready, spiked shoes on, and the crew positioned before Part A and Part B are combined. Mixing 150FC 150FC uses a 2 parts Part A to 1 part Part B by volume mix ratio. Premix Part A. Thoroughly mix the pre-pigmented Base before adding the Activator. If separate pigment is being added, completely disperse it into Part A first. Add Part B. Pour the Activator directly into the center of the Base container. Avoid pouring Activator onto the sides of the Base container. Use the correct mixer. For a full 3 gallon kit, use only a Cage or Box style mixer. A paddle mixer does not move enough of this thick material through a full 3 gallon batch to ensure complete mixing. Mix according to material temperature. Mix for 2 full minutes at approximately 300 to 450 RPM when the material is above 75 degrees Fahrenheit. Mix for 3 full minutes when the material is below 75 degrees Fahrenheit. Partial batches. Measure exactly 2 parts Base to 1 part Activator by volume. A red paddle mixer may be used for partial batches. Mix only until the material is completely uniform. Smaller batches require less mixing time. Do not exceed 3 minutes. No induction time is required. Mix it and GET IT OUT OF THE BUCKET. Do not leave mixed 150FC sitting in the bucket. This fast cure 100% solids epoxy generates heat rapidly when the mixed material remains concentrated in mass. As soon as mixing is complete, immediately pour the epoxy onto the floor. Application Pour immediately. Pour mixed 150FC onto the prepared floor in long ribbons approximately 12 to 18 inches wide. Do not drain or scrape the bucket. Material remaining on the sides or bottom may not be mixed as completely as the main batch. Spread the epoxy. Use an appropriate notched rubber squeegee to spread the material at the required coverage rate. Roll and back roll. Use a quality 3/8 inch shed resistant epoxy roller cover to even the material and maintain consistent coverage. Do not continue back rolling after the epoxy begins to tack. Once 150FC starts to set, leave the material alone and continue the installation sequence. Broadcast immediately. Apply the vinyl flakes, quartz, sand, or approved aggregate while the epoxy is wet enough to completely receive the broadcast. Prepare for the topcoat. After the broadcast has cured sufficiently, scrape and vacuum the surface according to the flooring system requirements, then apply the specified topcoat. 150FC Technical Specifications Specification Published Value Product Type Fast cure two component 100% solids epoxy Solids by Volume 100% Mix Ratio 2 parts Part A to 1 part Part B by volume Mixed Kit Size 3 gallons Mixed Viscosity Approximately 900 cps Working Time at 75 Degrees Fahrenheit Approximately 25 minutes on the floor Full Broadcast Cure at 75 Degrees Fahrenheit Approximately 2 hours Full Broadcast Cure Above 90 Degrees Fahrenheit As little as approximately 75 minutes Recoat Window Approximately 4 to 24 hours when an additional resin coat is required Heavy Foot Traffic Approximately 48 hours Vehicle Traffic Approximately 72 hours Moisture Vapor Rating Up to 12 lbs within published product limits Shore D Hardness 89 to 91 Compressive Strength 16,500 psi Adhesion to Concrete 600 psi Tensile Strength 3,550 psi Flexural Modulus 4,700 psi Koenig Hardness 145 Taber Abrasion 22 mg loss VOC Less than 50 grams per liter Concrete Preparation Mechanical preparation to approximately CSP 3 Application Roller 3/8 inch shed resistant epoxy roller cover Topcoating a Full Broadcast Floor Once the 150FC receiver coat has cured and the full broadcast is ready, scrape the surface in multiple directions and vacuum thoroughly before topcoating. Poly Gloss 85 Polyaspartic is a common topcoat for One Stop Epoxy full flake flooring systems. Select the appropriate Poly Gloss 85 version based on floor size, temperature, working time, and installer experience. Browse our Vinyl Flakes when building a full flake broadcast system from individual components. Frequently Asked Questions What is 150 Fast Cure Epoxy used for? 150FC is designed for full broadcast flooring systems including full flake, quartz, sand, and other approved aggregate systems. It functions as the primer, receiver coat, and moisture vapor barrier within its published 12 lb moisture limit. Is 150FC good for one day garage floors? Yes. One day full flake garage floors are one of the primary applications for 150FC. The fast cure allows experienced crews to prepare the slab, apply the receiver coat, broadcast flakes, scrape, vacuum, and topcoat in the same day when jobsite conditions allow. Is 150FC beginner friendly? No. 150FC is intended for experienced epoxy installers. The faster cure requires good job planning, correct mixing, immediate placement, fast spreading, and controlled broadcast timing. How much working time does 150FC provide? Working time is approximately 25 minutes at 75 degrees Fahrenheit after the epoxy has been properly mixed and placed onto the floor. Cooler conditions generally provide more time. Higher temperatures shorten working time. How quickly can I topcoat a full flake floor? Under a full broadcast, 150FC cures in approximately 2 hours at 75 degrees Fahrenheit. In very warm conditions above approximately 90 degrees Fahrenheit, cure can occur in as little as approximately 75 minutes. Confirm that the broadcast is hard enough to scrape and vacuum before applying the topcoat. Does 150FC replace a moisture vapor barrier? 150FC can perform the moisture vapor barrier role on qualifying projects with moisture conditions within its published 12 lb limit. Test the concrete before installation. Slabs exceeding that limit or presenting other moisture conditions may require a dedicated moisture vapor barrier system. Can I use 150FC for a partial flake floor? No. A partial flake floor leaves a large portion of the epoxy exposed. 150FC is intended for full broadcast systems where the epoxy is completely buried beneath the broadcast media. Can I use 150FC for a solid color floor? No. Use a general purpose 100% solids epoxy such as One Stop Epoxy Self Leveling 100% Solids Epoxy when the epoxy itself will remain visible. Can I use 150FC as a metallic epoxy base coat? No. Use the appropriate slower curing pigmented epoxy base beneath a metallic flooring system. 150FC is reserved for full broadcast applications. Why does 150FC have to be completely covered? 150FC is not UV stable and can amber when exposed to light. Full flake, quartz, and sand broadcasts completely cover the epoxy before the clear topcoat is installed, preventing the epoxy color from remaining visible. Can 150FC be used outside? It may be used only as part of an appropriate full broadcast system where the 150FC is completely buried and is not the exposed finish. The complete exterior system must use a suitable UV resistant topcoat. How do I mix a full 3 gallon kit? Use only a Cage or Box style mixer. Mix at approximately 300 to 450 RPM for 2 full minutes when the material is above 75 degrees Fahrenheit and 3 full minutes when the material is below 75 degrees Fahrenheit. Then GET IT OUT OF THE BUCKET and onto the floor immediately. Can I add solvent to extend the working time? No. Do not add solvent to 150FC. Altering the formulation can affect cure, film build, and moisture vapor performance. How much 150FC do I need for a full flake floor? A typical pigmented full flake receiver coat is applied at approximately 133 to 150 square feet per gallon, giving approximately 399 to 450 square feet from one 3 gallon kit. Actual material requirements depend on the concrete profile, porosity, repairs, film build, and normal application loss. Technical Data and Safety Information Review the current product data and safety information before installation, particularly when 150FC is being used for moisture vapor control or in a commercial flooring system. View One Stop Epoxy TDS and SDS Sheets

Moisture Vapor Barrier Epoxy | 25 lb Rated 100% Solids MVB One Stop Epoxy 100% Solids Moisture Vapor Barrier Epoxy is a professional-grade foundation coating engineered to block moisture vapor transmission through concrete slabs. Rated for extreme conditions up to 25 lbs of moisture vapor emission, this product creates a permanent barrier that prevents the most common causes of floor failure: peeling, bubbling, and delamination. This is not a finish coat or a receiver coat. It is a critical insurance policy used to stabilize concrete before installing a 100% solids epoxy build system. Why Professionals Use a 25 lb Rated MVB Concrete is naturally porous and acts like a sponge, releasing moisture vapor for years. When this vapor pressure builds up beneath a standard coating, it physically breaks the bond, leading to total system failure. Our MVB Epoxy solves this by penetrating deep into the concrete capillaries to create a structural seal that can handle high hydrostatic pressure. Extreme Moisture Resistance: Rated to block up to 25 lbs of vapor transmission—far exceeding standard epoxies. Prevents Osmotic Blistering: Stops the bubbles that form when moisture is trapped under the floor. Superior Bond Strength: Provides a stabilized, non-porous surface for your next epoxy layer to lock onto. Zero VOC Formulation: 100% solids with no odor, making it safe for interior and basement applications. The Proper System Sequence To ensure a lifetime bond on slabs with moisture concerns, follow the professional "Step-Up" method: The Barrier: Apply One Stop MVB Epoxy directly to mechanically profiled concrete (CSP 2-3). The Build Coat: Once cured, apply a layer of 100% Solids Self Leveling Epoxy. This acts as your pigmented base or "receiver coat" for flakes. The Finish: Complete the system with a high-performance Polyaspartic or Urethane topcoat. Mixing and Application Requirements Pro Tip: Do not broadcast flakes or quartz directly into the MVB. This material must be applied as a continuous, unbroken film to effectively block moisture. Mix for a full 3 minutes to ensure the chemical barrier is fully cross-linked. Mix Ratio: 2 Parts A to 1 Part B. Mixer: Use a box or cage style mixer at 300 to 450 RPM. Coverage: 100 to 150 square feet per gallon depending on porosity. Dry Time: 8 to 10 hours at room temperature. Frequently Asked Questions Do I need a moisture vapor barrier epoxy?If moisture is present, unknown, or if you are installing over a slab on grade, this is a necessary preventative step to avoid total coating failure. How do I know if my concrete has a moisture problem?Visible signs include efflorescence (white powder) or dark spots. The only certain way is testing, but applying MVB is the safest preventative measure for any slab where the history is unknown. Can I use this for basement floors?Yes. Basements are inherently prone to moisture issues. Using this vapor barrier is the best way to ensure your basement epoxy floor never peels or bubbles. Can I broadcast flakes directly into the MVB?No. The Moisture Vapor Barrier must be applied as a clean, continuous film to seal the slab. After it cures, you apply a 100% solids epoxy layer to serve as your pigmented receiver coat for flakes. Is this required for garage floors?It is highly recommended in humid environments, on older slabs, or if you are a professional installer offering a long-term warranty to your clients. What happens if I skip this step?Skipping moisture control on a high-vapor slab leads to osmotic blistering and total system delamination, requiring a costly total replacement. Can this be used as a finished floor?No. This is a functional base layer designed to stabilize the slab. It must be covered by a 100% solids epoxy build coat and an appropriate topcoat. What should I use over this product?Typically, installers follow this with a 100% solids epoxy (like our Self Leveling or 150 Fast Cure) before moving to their decorative broadcast or topcoat. How long do I have to wait before applying my next coat?The material is generally dry to the touch in 8 to 10 hours. You should apply your next coat of epoxy within 24 hours to ensure a strong chemical bond. What is the mix ratio?The mix ratio is 2 parts Part A to 1 part Part B. Mix thoroughly with a drill mixer for a full 3 minutes before pouring.

LABPOX MVB FAST | 100% Solids Epoxy Moisture Vapor Barrier LABPOX MVB FAST is a professional grade, 100% solids epoxy moisture vapor barrier designed to stop moisture before it destroys your floor. This system is engineered to bond to damp concrete slabs with up to 100 percent relative humidity, making it one of the most reliable solutions for moisture control in the industry. Moisture is the leading cause of epoxy floor failure. This product is designed to eliminate that risk and provide a stable foundation for epoxy, polyaspartic, and urethane flooring systems. If you are installing over a slab with unknown moisture conditions, this is not optional. This is your insurance policy. Performance and Moisture Control Up to 100% RH: Bonds directly to damp concrete and new concrete slabs less than 28 days old. Permeance: Less than 0.1 perm at 16 mils for maximum vapor protection. Moisture Reduction: Reduces emission rates from 25 lbs to less than 3 lbs per 1000 sq ft. Pinhole Mitigation Technology: Formulated to reduce surface defects and bubbles by up to 98 percent. Surface Preparation Requirements Proper preparation is mandatory. This product solves moisture problems, not surface contamination issues. Mechanical Preparation: Surface must be mechanically ground or shot blasted to a minimum CSP-2 or CSP-3 profile. Fiber Reinforced Concrete: All surface fibers must be completely removed by burning or grinding. Fibers act as conduits for moisture and will compromise the barrier if not fully encapsulated. Clean Surface: Concrete must be free of grease, oil, paint, or curing agents. Use a moisture meter to evaluate slab conditions. While this product bonds to high RH slabs, the surface must be free of standing moisture at the time of application. Radiant Heat: If a heated floor is installed, turn the system off 2 to 4 hours before application and keep it off for the duration of the cure. Mixing Instructions Proper mixing is critical to ensure the chemical properties of the moisture barrier activate correctly. Pre Mix Part A: Mix Part A at low speed before combining to ensure all pigments and solids are fully suspended. Mix Ratio: Combine 2 parts Part A with 1 part Part B in a clean container. Mix Time & Technique: Mix for 3 minutes using a Box Mixer and a low speed drill at 300 - 450 RPM. Immediate Placement: Once mixed, the material must be immediately poured onto the floor in ribbons. Leaving it in the pail will cause an exothermic reaction, making the product unusable. Application Apply using a 3/16 inch notch squeegee and back roll with an 18 inch roller to achieve a uniform film thickness. Work the material into the pores of the concrete to ensure full penetration. A minimum thickness of 16 to 18 mils is required to meet the permeance ratings for moisture mitigation. PRO TIP: This is a fast moving product. Once Part A and Part B are mixed, begin application immediately. Do not allow material to sit in the bucket. Extended dwell time will shorten working time and can lead to poor flow and inconsistent results. Coverage Rates and Permeance The vapor barrier performance of this product is directly proportional to the thickness of the coating. To ensure the permeance rating and performance of the barrier, Labsurface recommends a uniform film thickness of 16 to 18 mils. Thickness (Mils) Approx. Coverage 16 Mils (Recommended) 100 Sq. Ft. Per Gallon 14 Mils 114 Sq. Ft. Per Gallon 12 Mils 133 Sq. Ft. Per Gallon 4 to 6 Mils (Green Concrete Primer) 265 to 400 Sq. Ft. Per Gallon Frequently Asked Questions Can I broadcast vinyl flakes or other aggregates directly into MVB FAST?No. Broadcasting flakes or other aggregates directly into the moisture vapor barrier will decrease the moisture vapor resistance by as much as 75 percent. MVB FAST is a dedicated mitigation layer and must be applied as a standalone film at a uniform thickness to maintain its perm rating. You must apply a separate receiver coat over the barrier before broadcasting flakes. Do I really need a moisture vapor barrier?If you are unsure of the moisture levels in your slab, the answer is yes. Moisture is the leading cause of coating failure. Using MVB FAST is your insurance policy against delamination. Can this be applied to damp concrete?Yes. This product is designed to bond to concrete slabs with up to 100 percent relative humidity, provided the slab is completely dry to the touch at the time of installation. What happens if I have fiber reinforced concrete?Fibers can act as conduits for moisture to travel through your coating. You must burn or grind away all surface fibers and ensure a minimum 16 mil thickness to fully encapsulate them. How fast can I continue my flooring system?MVB FAST is engineered for speed. You can typically recoat in as little as 3 to 4 hours, allowing you to install a full system in a single day. What causes fisheyes or bubbling in the vapor barrier?Most issues are caused by surface contaminants or air movement. Ensure all HVAC vents are directed away from the floor and turn off all fans to prevent the material from skinning over prematurely. Can I use this over new concrete?Yes. This product can be applied to new concrete slabs that have been installed within 28 days, provided the surface humidity is controlled for at least three hours prior to installation. Why is reverse mixing recommended?Switching your mixer to reverse mode after 90 seconds forces the liquid from the bottom of the can to the top. This ensures a 100 percent homogeneous mixture which is critical for moisture mitigation. What is the maximum moisture reduction rate?When applied at the correct thickness, it reduces moisture emission rates from 25 lbs down to less than 3 lbs per 1000 square feet over 24 hours. Do I have to sand before applying my next coat?If you apply the next layer within the 24 hour recoat window, no sanding is required. After 24 hours, you must sand the surface to a dull finish to ensure a mechanical bond. Does this stop hydrostatic pressure?Very high levels of humidity may indicate hydrostatic pressure from a drainage failure or water leak. While MVB FAST is a powerful barrier, the source of any major water leaks should be addressed before installation.

Premera Easy MVB Premera EasyMVB is a unique surface treatment for concrete consisting of specialized reactive chemicals in a colloidal silica matrix. EasyMVB can be used as a concrete treatment to penetrate into concrete and creates a moisture vapor barrier within concrete by reacting with and sealing pores and capillaries, eliminating vapor transmission and solving hydrostatic pressure challenges. EasyMVB is also a complementary pre-primer treatment for Premera’s sol-gel based products. When used in combination with Premera FP1 Fusion Primer, up to 25 lbs of moisture vapor can be withstood, effectively eliminating adhesion issues caused by moisture vapor. When applied to concrete or any pozzolanic material, Premera EasyMVB penetrates to seal, densify and thereby harden cementitious surfaces. Premera EasyMVB is formulated to penetrate and block capillaries by reacting with free calcium hydrates to form an insoluble, permanent barrier. It effectively eliminates efflorescence, improves water resistance, water repellency, and surface properties of cementitious materials. Premera EasyMVB is recommended for use as a pre-priming surface treatment on floorings, liners in immersion application, and adhered waterproofing membranes – including structures under hydrostatic pressure. Premera EasyMVB may be used as a standalone surface treatment in certain applications. Features: Environmentally friendly, zero VOC Blocks up to 25 lbs of hydrostatic pressure Prevents efflorescence from occurring Can polish concrete after HLT is usedReduces risk of moisture out-gassing, pin-holing, and blisters in top coats

APF VaporSolve® Primer | Adhesion Primer for Silicate Treated Concrete Product Overview APF VaporSolve® Primer is a specialized water based epoxy primer engineered exclusively for the VaporSolve moisture mitigation system. This product is not a standalone moisture vapor barrier (MVB). Its primary purpose is to serve as the critical "bridge" between challenging concrete substrates and the protective moisture barrier coat. It is specifically designed to solve adhesion failures on concrete slabs treated with silicate based curing compounds or densifiers—surfaces where traditional epoxy primers simply cannot bond. When used as the foundation for VaporSolve LP, it ensures the entire system remains anchored even under extreme hydrostatic pressure and high alkalinity. IMPORTANT: APF VaporSolve® Primer is an adhesion promoter, not a moisture barrier. It must be topcoated with VaporSolve LP to achieve moisture mitigation. Do not purchase this as a standalone solution for moisture vapor; it is specifically for bonding to high moisture slabs and concrete treated with silicates or densifiers. Where This Product Fits System Foundation: The mandatory first coat for the VaporSolve moisture mitigation system. Silicate Bond Specialist: Formulated to penetrate concrete treated with sodium or potassium silicates. Damp Slab Integration: Safely adheres to green or damp concrete where solvent primers fail. Alkalinity Defense: Uses Bisphenol F resin technology to resist the high pH environments common in wet slabs. Key Features Substrate Penetration: Low viscosity allows the resin to wet out and anchor into dense concrete pores. System Specific: Engineered to work in perfect chemical harmony with VaporSolve LP. Water Based & Low Odor: Safe for use in schools, hospitals, and occupied residential spaces. Wide Application Window: Reliable curing in temperatures ranging from 40°F to 100°F. Technical Specs & Mixing Property Details Coverage Approximately 200 sq ft per gallon Mix Ratio Do not mix partial kits Water Addition 1 gal water (3 gal kit) | 1 qt water (0.75 gal kit) Next Step Apply VaporSolve LP within 24 hours Surface Preparation Concrete must be mechanically prepared to a CSP 2 or CSP 3 profile. Remove all wax, old coatings, and loose contaminants. Vacuum thoroughly; the primer must reach the open pores of the concrete. Important: Acid etching is not an approved prep method for moisture mitigation systems. Mixing Instructions Pour entire contents of Part B into Part A. Mix for 2 to 3 minutes with a low speed drill (300 to 450 RPM). Add Water: Add the required amount of clean potable water and mix again for 2 to 3 minutes until uniform and creamy. Apply immediately. Pour material onto the floor within 3 minutes of mixing to maximize penetration. Frequently Asked Questions Can I skip the primer and just use VaporSolve LP?If your concrete has been densified or treated with silicates, skipping this primer will likely lead to a bond failure. This primer is the only layer engineered to bite into those silicate residues. How long do I wait before applying the VaporSolve LP barrier coat?Apply the LP barrier coat as soon as the primer is tack free, typically within 6 to 12 hours. Do not wait longer than 24 hours without mechanical sanding. Is this the same as a standard water based epoxy?No. This is a Bisphenol F resin system designed specifically for the extreme alkalinity and vapor pressure found in moisture mitigation environments. Does this primer come in colors?No. VaporSolve Primer is a clear system. Its job is substrate penetration, not aesthetics. Color is introduced in the subsequent coating layers. Do I need to wash the floor before priming?Mechanical grinding is the best prep. If the slab is dirty, it must be degreased and neutralized before grinding. The primer must reach clean, open concrete to work.

APF VaporSolve LP | 99% RH Moisture Mitigation Epoxy APF VaporSolve LP (Low Perm) is a specialized, 100% solids epoxy coating engineered to isolate moisture-sensitive flooring systems from concrete with high moisture levels. It acts as a high-performance moisture mitigation layer, designed to prevent the devastating flooring failures caused by excessive moisture vapor transmission through the slab. VaporSolve LP is suitable for concrete substrates showing up to 99% Relative Humidity (RH) when measured in accordance with ASTM F2170. It is part of the proven APF VaporSolve system, formulated for low viscosity and superior substrate wetting to promote deep penetration and a permanent bond, even to damp concrete. Technical Performance Snapshot Physical Property Value Maximum Moisture Rating 99% RH (ASTM F2170) Permeability (ASTM E-96) 0.01 Perms Adhesion to Concrete (ASTM D-4541) >500 psi (Concrete Failure) Pot Life / Bucket Time (ASTM D2471) 10–15 Minutes at 77°F VOC Content <50 g/L Critical Bucket Time Warning: VaporSolve LP has an extremely short pot life of 10–15 minutes. You must pour the material out of the pail immediately after mixing. If left in the bucket, the material will rapidly generate heat and kick, significantly reducing your application window. Once spread on the cooler concrete surface, your actual working time will extend, but the material must get out of the pail immediately. The Silicate Conflict If the concrete surface is known or suspected to have been treated with silicates, densifiers, or reactive silicate curing compounds, the use of APF VaporSolve Primer is required before applying VaporSolve LP. Shot-blasting or diamond grinding alone will not reliably remove metasilicate residues from within the concrete pores. In these cases, the primer is a mandatory step to bridge the gap and ensure the system maintains a permanent bond. Where This Product Fits in a System APF VaporSolve LP is used below moisture-sensitive flooring systems (Epoxy, Urethane, Polyaspartic, or Cementitious Overlays) when elevated concrete moisture is present. It is a functional moisture control membrane designed to isolate the finished floor from moisture vapor coming through the slab. Packaging and Coverage Packaging: Supplied in complete A+B units in 1.5 gallon and 3.0 gallon kits. Use only as a complete mixed unit; do not break down into partial mixes. Coverage Rates: To achieve the 0.01 perm rating, the material must be applied at 100 sq. ft. per gallon (16 mils Wet Film Thickness). Proper coverage is critical because moisture mitigation is a thickness dependent application. If spread too thin, the system may fail to isolate moisture vapor effectively. Surface Preparation Concrete must be clean, structurally sound, and mechanically prepared to a minimum ICRI CSP 2 to 3 surface profile. The concrete must be free of wax, grease, loose coatings, curing compounds, and dust. Note: Acid etching is not a professional installation procedure and should not be used in place of mechanical grinding or shot blasting. It does not create a consistent surface profile and may void manufacturer warranties. Mixing Instructions Thoroughly pre-mix Part A before adding Part B. Combine both components and mix for 2 to 3 minutes using a slow-speed drill and paddle mixer. Scrape the sides and bottom of the mixing container during mixing. Do not mix by hand. Do not mix at high speeds, as whipping air into the material can create bubbles, pinholes, and surface defects. Application Instructions Apply VaporSolve LP immediately after mixing. Spread the product with a squeegee and back-roll with a quality solvent-resistant 3/8-inch nap roller cover. The material must be rolled twice to achieve proper substrate wetting and to ensure a pinhole-free seal. Use a North-South and East-West rolling pattern to distribute the product evenly across the prepared concrete. Recoat within the 12–24 hour window. If the 24-hour window is exceeded, you must abrade the surface with 80–100 grit until it is uniformly gloss-free and dust-free before proceeding. Common Frequently Asked Questions Can I use this on "Green" concrete? Concrete typically needs to cure for 28 days before coating. While VaporSolve LP can handle high humidity, it is still recommended to wait for the concrete to stabilize. If you are on a fast-track construction schedule, please contact us to discuss the specific age of your slab before proceeding. Why is the Perm rating so important? A perm rating measures the rate of water vapor transmission. VaporSolve LP’s 0.01 perm rating reduces moisture vapor transmission to near zero, helping prevent failure of moisture-sensitive flooring systems installed above it. What happens if I see "Pinholes" after application? Pinholes occur when air escapes the concrete as the epoxy cures. This is common on porous slabs and should be expected in some cases. If you see pinholes after your first coat, you must apply a second tight coat. A single pinhole can allow moisture vapor to pass through and eventually cause a failure in the finished flooring system. Can I use this as my final garage floor finish? No. VaporSolve LP is a functional industrial resin. It is not UV stable and is not designed for aesthetics. It must be covered with a pigmented epoxy, decorative flake system, or appropriate topcoat. Do I need to sand before my next coat? If you apply your next layer within the 12 to 24 hour recoat window, no sanding is required. If you wait longer than 24 hours, the surface becomes too hard for a chemical bond and must be sanded with 80–100 grit to create a mechanical profile. Can I use Pigmented VaporSolve LP directly on concrete? Pigmented VaporSolve LP is designed to be applied over VaporSolve Primer. If you are applying directly to properly prepared concrete without a primer, use the clear version. Why can't I split the kits into smaller batches? The mix ratio for moisture mitigation products must be exact to maintain the permeability rating. Measuring by eye or in small batches leads to errors. Even small mix inaccuracies can create weak spots that allow moisture to pass through, leading to system failure. Always mix the full kit as supplied.