Sika® WP Shield Primer

Bitumen, water and additives

12 months from the date of production

Store properly in original unopened, sealed and undamaged packaging, in covered area at temperatures between +20 °C and +35 °C. Store vertically with top side up. Protect from direct sunshine, rain, snow, ice, etc.

pasty liquid

Sika® WP Shield Primer must be diluted with maximum 10 % clean water to achieve the desired consistency.

Note: In case of exceptional site conditions, higher dilution can be done based on site trials and advise of Sika Technical Service.

+10 °C min. / +40 °C max.

+10 °C min. / +40 °C max.

The above values are at 23 ± 2 °C and 50 ± 5 % relative humidity and may vary according to the change in temperature, humidity, ventilation, wind, substrate quality, etc.

0.250–0.400 kg/m² per coat (diluted)

Note: These figures are theoretical and does not consider any additional material required due to surface porosity, surface profile, variations in level or wastage etc.

Concrete, lime-concrete and mortar screed surfaces must be clean, free from grease, oil & loosely adhering particles.

New concrete should be cured for at least 28 days and should have a pull off strength ≥ 1.5 N/mm². Cementitious or mineral based substrates must be prepared mechanically using wire brush, grinder, abrasive blast cleaning or scarifying equipment to remove cement laitance and to achieve an open textured surface. Loose friable material and weak concrete must be completely removed and surface defects such as blowholes and voids must be fully exposed. Use Sikadur® or SikaLatex® or Sika Monotop® range of repair materials for filling in potholes, voids or cracks on the substrates.

Sika® WP Shield Primer is mixed with clean water upto maximum 10 % to achieve desired consistency. Stir the contents well before application.

IMPORTANT

The primer may become high viscous due to change in ambient conditions like temperature and humidity that might affect the consistency and increase consumption of the primer. Under such situation, a site modification by further diluting the primer as per the advice of the Sika Technical Service may be necessary to achieve the desired application consistency. The dilution is to be fixed on the basis of site trials but not to exceed 20 % by weight of the primer.

Application procedure may vary slightly depending upon the site conditions.

1. Apply bituminous primer to a clean, smooth and dry surface by brush, roller or spray in single coat as per consumption given. Ensure full wetting and coverage of the surface.
2. In some cases a second coat of primer may be necessary, allow 24 hours between successive coats.
3. Application of bituminous membranes must be done soon after the primer is hard dry.

IMPORTANT

Do not apply Sika® WP Shield Primer when it is raining or when rain is imminent.

IMPORTANT

Do not apply Sika® WP Shield Primer on substrates with oil or greese contamination.

IMPORTANT

Do not apply Sika® WP Shield Primer on dry surface in extreme hot weather. Surface must be cooled by spray or mist of water before application.

IMPORTANT

Apply the membrane within 24 hours of primer application.

Clean all tools and application equipment with water immediately after use. Hardened and/or cured material can be removed mechanically or using thinner.