Hard Rock Concrete Supplies carries a full range of supplies for the concrete industry. Our range of products includes; Sealers, Cure & Seals, Rebar (Steel and GFRC), Insulation, Support Brackets, Weeping Tile, Patching and Repair Materials; as well as hand and power tools.
Our team prides itself on our customer service, product knowledge, and wide range of quality products and would love the opportunity to talk with you about all of your concrete needs. 

Mapecrete Hard FS 5 Gallon

SKU: 485687
Regular price $86.49

Mapecrete Hard FS is a water-based, magnesium fluorosilicate solution for horizontal concrete surfaces that chemically bonds with the free lime in concrete to produce a denser, more durable and chemically resistant floor surface.

• Hardens floors that have soft and powdery surfaces
• Environmentally friendly with a VOC-free and odorless formula
• Resists acids, alkalis, organic and inorganic chemicals, oil and grease
• Produces a breathable, dense, abrasion-resistant concrete surface
• Non-filming; reduces cleaning and maintenance costs for floors

LEED v4 Points Contribution LEED Points
Health Product Declaration (HPD)*...........................................Up to 2 points
* Using this product may help contribute to LEED certification of projects in the category shown above. Points are awarded based on contributions of all project materials.

• Interior/exterior
• Industrial floors in warehouses, distribution centers, manufacturing plants and transportation terminals
• Concrete floors in medical buildings, institutional floors, and the floors of commercial garages and buildings
• Effective on horizontal concrete surfaces
• Effective on all porous, untreated concrete and carbonated surfaces

• For optimum installation, apply when surface temperatures are at least 40°F (4°C) and rising.
• Do not allow if rain is expected within 24 hours.
• Do not apply Mapecrete Hard FS to uncured concrete.
• Do not apply Mapecrete Hard FS to floors previously sealed or treated with curing compounds, unless these compounds have been chemically or mechanically removed.
• Protect adjacent surfaces – including metals, glass and wood – from overspray. Immediately wash off any overspray with potable water. 

Consult MAPEI’s Technical Services Department for installation reccommendations regarding any substrates and conditions not listed.

• New, cured (at least 7 days old) and existing concrete surfaces

• Concrete should be clean and free of any dirt, residue, debris, curing compounds, cure and seals, paint, coatings, oil and wax that could prevent the penetration of Mapecrete Hard FS. Before applying Mapecrete Hard FS, allow the concrete to air-dry for at least 24 hours after cleaning.

Choose all appropriate safety equipment before use. Refer to the Safety Data Sheet for details.
• Mapecrete Hard FS is easily diluted with water and mild agitation (see the dilution ratio in the “Approximate Coverage” chart).

Read all installation instructions thoroughly before installation.
1. Pre-dampen concrete in hot weather when ambient temperatures are greater than 80°F (26°C). Apply Mapecrete Hard FS after all standing water has dissipated.
2. Flood each coat of Mapecrete Hard FS onto the concrete surface and spread with a soft-fiber broom or with a mop, squeegee, roller or sprayer.
3. Allow the solution to soak into the substrate for 10 to 15 minutes, redistribute any remaining puddles and mop up any excess.
4. Allow Mapecrete Hard FS to dry between coats – generally for 4 to 12 hours, depending on temperature and humidity. Two coats are typically required on nonporous floors, but if the floor has severe dusting or carbonation, a third coat may be required.
5. Any areas showing patches of white on the floor should be immediately flooded with hot water and scrubbed.

• Clean tools and equipment immediately after use with soap and water.
• Dried material may require mechanical means for removal.

Product Performance Properties

 Laboratory Tests Results
Chemical resistance Caustic soda, sodium chloride, soap solutions, calcium
chloride, solvents, fuel oils, ammonium chloride and sugar solutions
VOCs (Rule #1113 of California’s SCAQMD) 0 g per L

Shelf Life and Product Characteristics

 Shelf life 2 years when stored in original, unopened packaging at 73°F (23°C)
Physical state Clear, thin liquid

Protect containers from freezing in transit and storage. Provide for heated storage on site and deliver all materials at least 24 hours before work begins.

Application Properties

 Drying time at 70°F (21°C)
Ready for foot traffic/rain  4 to 6 hours
Ready for wheel traffic 8 to 12 hours

CSI Division Classification
Concrete Finishing     03 35 00

Packaging Size
Pail: 5 U.S. gals. (18,9 L)
Pail: 55 U.S. gals. (208 L)
Approximate Coverage* per 1 U.S. gal. (3,79 L)

Dilution Ratio


Dilution Ratio            (Mapecrete Hard FS : Water)

Coverage Rate For Diluted Material Volume Undiluted Material 1000 Sq. Ft.
1st coat  1 : 2 150 sq. ft. per U.S. gal. 2.2 US gals (8,33 L)
2nd coat  1 : 1 200 sq. ft. per U.S. gal. 2.5 US gals (9,46 L)
3rd coat  2 : 1 300 sq. ft. per U.S. gal 2.2 US gals (8.33 L)

**Coverage varies depending on the surface porosity.


Mapecrete Hard FS TDS

Mapecrete Hard FS SDS