Sikagard®-277 Enviroseal

Water-based blend of silane and siloxane

12% by weight

18 months when properly stored

Store in clean, unopened containers in a dry area between 35 and 110° F (2 and 43° C). Keep from freezing.

8.3 lbs/gal

Specific Gravity

1.0 kg/L

12%

1⁄16–3⁄8 in (1.6–9.5 mm)

average depth, depending on substrate

Leakage on brick wall

Typical drying time for Sikagard®-277 Enviroseal is 4 hours at 70° F (21° C) and 50% relative humidity. Cooler temperatures or higher relative humidity can extend the drying time.

• Brick: 100–175 ft²/gal (2.4–4.3 m²/L)
• Stucco: 80–140 ft²/gal (2.0–3.5 m²/L)

A test area is recommended to determine actual coverage rates. Coverage rates will vary greatly with the porosity of the substrate.

• Keep material from freezing.
• Do not dilute Sikagard®-277 Enviroseal.
• Do not apply during inclement weather or when inclement weather is anticipated within 12 hours.
• To prevent damage to nearby shrubbery and landscaping, cover or protect with drop cloth.
• Variations in the texture and porosity of the substrate will affect the coverage and performance of the product.
• Protect asphalt-based products such as roofing materials or plastic products from overspray
• Sikagard®-277 Enviroseal will not inhibit water penetration through unsound or cracked surfaces or surfaces with defective flashing, caulking, or structural waterproofing.
• Make certain the most current versions of the product data sheet and SDS are being used.
• Proper application is the responsibility of the user. Field visits by Sika personnel are for the purpose of making technical recommendations only and are not for supervising or providing quality control on the jobsite.

1. Surfaces should be clean, dry, and free of alkali, efflorescence, sand, surface dust or dirt, oil, grease, chemical films, and other contaminants. Concrete surfaces should be fully cured.
2. Air, material, and surface temperatures should be 40° F (4° C) or higher during application and curing. Surfaces can be slightly damp prior to application, but for best results and maximum penetration of sealer, a dry surface is recommended. Do not apply sealer when temperatures are expected to fall below 40° F (4° C) within 4 hours of the completed application.
3. Repoint any loose or disintegrated mortar and allow a minimum of 72 hours drying time before application. Install caulking and sealant before application, allowing a minimum of 6–12 hours of curing time (or until set). Contact Technical Service for recommendations.

1. Test a small area of the surface (generally a 5 by 5 ft [1.5 by 1.5 m] section) before starting the general application of any clear penetrating sealer to ensure desired performance results, aesthetics, and coverage rates. Allow 5–7 days for the product to fully react before evaluation.
2. Mix material thoroughly before and during application.
3. Apply by low-pressure, non-atomizing spray.
4. Apply a mist coat of Sikagard®-277 Enviroseal immediately before application to help break surface tension and assist with maximum penetration.
5. Flood surfaces by applying from the bottom up, applied to saturation, with a controlled 8–10" (20 cm) material rundown to ensure maximum penetration into the substrate.
6. Extremely porous substrates may require 2 coats. Apply the second coat as soon as the initial surface drying of the first coat has become visible.

Clean equipment and tools with hot soapy water. Overspray can be cleaned immediately with hot soapy water. Dried residue can be cleaned with a mild citrus-based cleaner or very hot water, then scrubbed with a soft-bristle brush.