Sikagard®-200 HD WB

USDA compliant for use in meat and poultry areas

Sikagard®-200 HD WB is an alkalisilicate hardener.

15 months when properly stored.

Store in unopened containers in a cool, dry area between 35°F and 85°F (4°C and 29°C). Keep from freezing.

20% increase in abrasion resistance over untreated samples
*Application to fresh mortar. Abrasion resistance measured at 7 days, 70° F (23° C) and 50% relative humidity.

30% improvement in moisture retention
*Application to fresh mortar. Abrasion resistance measured at 7 days, 70° F (23° C) and 50% relative humidity.

Alkali-silicate hardeners can be used to increase resistance to chemicals including (but not limited to) the following:

1. Sikagard®-200 HD WB penetrates in approximately 30-60 minutes after application, depending on temperature, humidity, and job conditions. Each application must penetrate thoroughly before proceeding with the next.
2. A floor treated with Sikagard®-200 HD WB must completely dry before accepting any traffic. Allow 24 hours before subjecting to heavy traffic.

150–200 ft² /gal (3.68 – 4.9 m² /L)
Coverage may vary with application method, surface conditions, and porosity

For Best Performance

• On exterior applications, rapid drying conditions may greatly reduce the effectiveness of Sikagard®-200 HD WB as a curing aid. It is the responsibility of the user to adjust the curing rate to properly regulate the hydration of the concrete.
• If Sikagard®-200 HD WB freezes, warm and restir to uniformity. If separation is persistent, discard product.
• Install joint sealants before application of Sikagard®-200 HD WB; if not possible, test first for adhesion.
• For subsequent coating applications, perform proper surface preparation and consult the coatings manufacturer for more instructions.
• Spray application will yield best results.
• Dry buffing 24 hours after application will improve sheen of finished floor.
• Application method and concrete porosity will affect final appearance of Sikagard®-200 HD WB. White residue signifies too strong a mix or the surface reaching maximum hardness. Applications should be stopped and the surface flushed with clean hot water, scrubbed with a stiff-bristled broom and allowed to dry. If any applications remain, dilution of the product may be required to prevent whitening.
• Applications to concrete containing pozzolanic additives will require additional Sikagard®-200 HD WB.
• Do not allow Sikagard®-200 HD WB to come in contact with any glass, fabric, metal, or painted surfaces. Immediately wipe contaminated surfaces with a clean water-saturated cloth, then wipe dry with a second clean cloth.
• Allow at least 7 days after application before using adhesives over Sikagard®-200 HD WB.
• One application of Sikagard®-200 HD WB is normally sufficient. Repeat applications will ensure complete densification of concrete surface.
• For professional use only; not for sale to or use by the general public.
• Make certain the most current versions of product data sheet and SDS are being used; visit usa.sika.com to verify the most current versions.
• Proper application is the responsibility of the user. Field visits by Sika personnel are for the purpose of making technical recommendations only and not for supervising or providing quality control on the job site.

New Concrete

1. Freshly finished concrete surfaces require no surface preparation if Sikagard®-200 HD WB is applied immediately after the final finishing operation in place of a resin or acrylic curing compound.
2. On areas where forms have been recently removed, all form oil or breaking compound residue must be removed prior to application.

Existing Concrete (Cured 28 Days or Longer)

1. Remove all dust and dirt, and ensure the surface is completely dry.
2. The surface must be free from all contaminants to allow penetration of Sikagard®-200 HD WB into the pores of the concrete.
3. If acid is used to remove surface coatings, the acid must be neutralized and the surface flushed with water and allowed to dry completely before application of Sikagard®-200 HD WB.
4. Apply Sikagard®-200 HD WB to a test area to verify effectiveness and final surface finish

Sikagard®-200 HD WB must fully saturate the concrete for maximum effect. Apply sufficient product to saturate the concrete without puddling.

New Concrete

1. After final finishing, as soon as all surface water has evaporated and the concrete can bear foot traffic, apply Sikagard®-200 HD WB with a low-pressure sprayer. Keep the entire surface wet with Sikagard®-200 HD WB for a full 30 minutes by spraying or by brooming excess material from low spots to saturate dry spots.
2. As Sikagard®-200 HD WB begins to penetrate into the surface, lightly sprinkle the surface with water to aid penetration.
3. When the surface begins to dry a second time, flush with water and use a squeegee or broom to remove excess material or impurities that may have been brought to the surface.
4. To improve sheen, dry buff with a non-abrasive pad the following day.

Existing Concrete (Cured 28 Days or Longer)

1. Saturate the surface with undiluted Sikagard®-200 HD WB. Keep the entire surface wet with Sikagard®-200 HD WB for a full 30 minutes by spraying or by brooming excess material from low spots to saturate dry spots.
2. After 30-40 minutes, if most of the Sikagard®-200 HD WB has been absorbed into the surface, broom or squeegee any excess material from the low spots so it may be absorbed into the surface or completely removed from it. Flush floor clean with water.
3. Alternatively, use a floor buffing machine with a non-abrasive pad to help work Sikagard®-200 HD WB into fully cured concrete during application.

Clean brushes, tools and equipment with clean water immediately after use. Thoroughly flush sprayers. Dispose of unused material according to local regulations.