Sikagard® H 185

Water-based proprietary blend of silane and siloxane.

1 year when stored properly

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

8.38 lb/gal

Specific Gravity

1.0 kg/L

1/16 in – 1/4 in (1.5 mm – 6 mm)

average depth depending upon the substrate

Water Permeance

Water Repellency

Efflorescence

Highly resistant

Typical drying time for Sikagard® H 185 is 4 hours at 70° F (21° C) and 50% relative humidity. Cooler temperatures or higher relative humidity can extend the drying time.

Drying time for a recoat

30 min, (if necessary)

Block (lightweight): 25–60 ft²/gal (0.6–1.5 m²/L)
Porous concrete: 60–150 ft²/gal (1.5–3.7 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® H 185.
• Do not apply during inclement weather or when inclement weather is anticipated within 2 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® H 185 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 2 weeks for the product to fully react before evaluation. Refer to Appendix HY-3: Test Area Application.
2. Mix material thoroughly before and during application.
3. Apply by low-pressure, non-atomizing spray.
4. Apply a mist coat of Sikagard® H 185 immediately before application to help break surface tension and assist with maximum penetration.
5. Flood surfaces to saturation by applying from the bottom up, with a controlled 8–10" (20 cm) material rundown to ensure maximum penetration into the substrate.
6. Extremely porous substrates may require 2 coats. Application of the second coat should proceed with a wet-on-wet application. Refer to Appendix HY-1: Sealing Lightweight Block.

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.