Description
SODIUM SILICATE HARDENER & DENSIFIER
SurfKoat Aqualon S-400 is an economical sodium silicate concrete densifier used to harden, strengthen and internally seal concrete. Aqualon S-400 creates a permanent dust-proof surface by reducing the porosity of the concrete and hardening the surface. Densifiers actually become a permanent part of the concrete itself, and will not peel, scratch or wear away due to heavy traffic.
S-400 is extremely versatile and can be used on all types of un-sealed concrete surfaces. S-400 can be used indoors or outdoors on uncured freshly placed concrete or fully cured existing concrete. For polishing applications, S-400 is used in combination with a floor polisher to create a hard dense surface with a high-gloss finish.
Essentials
- Sodium Silicate
- Water Based
- Can never flake or peel
- Increases surface strength
- Reduces dusting
- Easy Spray or brush Application
- All existing sealers must be removed before application
- Coverage: See Detailed Info
Detailed Info!
To learn more, keep reading or click a link below to jump to a specific topic:
- Detailed Description
- Cleaning and Preparation Instructions
- Specific Applications
- Coverage Rates
- Additional Protection
- FAQ's
Aqualon S-400
It's hard to find a more versatile product than S-400. This is especially true when it's used in combination with a water-repellent or protective sealer. This two-step process is the best protection you can offer a piece of concrete. Concrete is like a giant sponge full of tiny pores. Densifiers like S-400 simply work by filling these pores with silica and reducing porosity. This reduction in porosity not only makes the surface harder, it also stops the movement of moisture and moisture vapor from above AND below the slab. The second step then makes the entire structure water, chemical and/or stain repellent.
Cleaning and Preparation Instructions
Do not apply to any surface that is dirty, frozen, or heavily saturated with water. Surface must be clean and free of all debris, dry, and absorbent. Mist water in a small area to test the surface for absorbency. Any surface to be treated should uniformly wet out. If the surface to be treated does not wet out uniformly, it is then recommended to prepare the surface mechanically to increase porosity and to remove any remaining surface contaminants.
Specific Applications
It is always recommended to test the product in a small, inconspicuous area (on the same concrete substrate) for desired results prior to application. Substrate temperature must be no less than 40 degrees F and not exceed 80 degrees F.
FRESHLY PLACED, UNCURED CONCRETE:
Apply second coat of S-400 in the same manner as the first, paying special attention to areas that appear to be more porous and continue to absorb material. Again, remove any puddled areas with applicator brush or mop. Do not leave any puddled areas or un-absorbed product on the surface. If excess S-400 is allowed to dry on the concrete surface, a white residue may form and can only be removed by mechanical means such as sanding or grinding.
FULLY CURED TROWELLED CONCRETE (if not polishing):
Apply second coat of S-400 in the same manner as the first, paying special attention to areas that appear to be more porous and continue to absorb material. Again, remove any puddled areas with applicator brush or mop. Do not leave any puddled areas or un-absorbed product on the surface. If excess S-400 is allowed to dry on the concrete surface, a white residue may form and can only be removed by mechanical means such as sanding or grinding.
FULLY CURED TROWELLED CONCRETE - POLISHING APPLICATION:
FULLY CURED BROOMED/OUTDOOR CONCRETE:
Apply second coat of S-400 in the same manner as the first, paying special attention to areas that appear to be more porous and continue to absorb material. Again, remove any puddled areas with applicator brush. Do not leave any puddled areas or un-absorbed product on the surface. If excess S-400 is allowed to dry on the concrete surface, a white residue may form and can only be removed by mechanical means such as sanding or grinding.
Of course, having the right tools will make your job easier, so scroll to the bottom to see our recommended Sprayers, Brushes and Application Tools!
Coverage Rates
Coverage rates are approximate and will vary depending on substrate density, porosity and temperature. In most cases, 2 coats are required. Coverage rates based on total combined two coat application.
Freshly placed, uncured concrete: 200-300 sq. ft. / gallon
Existing, fully cured, trowelled concrete : 100-150 sq. ft / gallon
Existing, fully cured, ground concrete : 100-150 sq. ft / gallon
Existing, fully cured, broomed concrete : 100-150 sq. ft / gallon
Additional Protection
Although concrete densified with S-400 is certainly harder, stronger and less porous, it is still bare concrete. This means the surface is still vulnerable to staining, etching and erosion. For this reason, we always recommend a final layer of protection be considered, especially for outdoor surfaces.
If S-400 was applied as a curing compound on freshly placed concrete, we always recommend allowing the concrete to fully cure for 28 days before proceeding with application of any additional protection.
Broomed/outdoor concrete:
Surf-Guard SB-100 - Breathable, deep penetrating, invisible extreme protection from water intrusion, salts, acid rain, de-icing chemicals and freeze/thaw exposure.
Surf-Block WB-75 - Breathable, deep penetrating, invisible economical protection from water intrusion, salts, acid rain, de-icing chemicals and freeze/thaw exposure.
FAQ's
Got Questions?
Check out the "Help Center", send us an email or just give us a call and we'll be glad to help you with your order!
