SikaShield® Primer W-30 IN

Water based bituminous primer for SikaShield® bituminous waterproofing membranes (Formerly Sika® WP Shield Primer)

DESCRIPTION

SikaShield® Primer W-30 IN is single component, quick drying, water based modified bituminous primer which penetrates and activates the substrates. It improves adhesion between the substrate and preformed bituminous sheet membranes in SikaShield® range. USES Used as a primer for better adhesion of the torch-on and stick-on Atactic Poly Propylene (APP) and Styrene Butadiene Styrene (SBS) modified bituminous waterproofing membranes.

CHARACTERISTICS / ADVANTAGES

Excellent bond with concrete, screed mortar, porous stones and lime-concrete substrates ▪ ▪ Bonds well with old bituminous substrates ▪ Easy application by brush, spray or roller ▪ Good penetration in cementitious substrates Effective activation of the surface to receive the waterproofing sheet membrane ▪ ▪ Specially designed for tropical conditions

PRODUCT INFORMATION

Chemical base Bitumen, water and additives Packaging 20 kg metal drum Shelf life 12 months from date of production Storage conditions 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. Appearance / Colour Pasty liquid / Black or brown Density (1.00 ± 0.05) g/mL (at +27 °C) (IS 101 : Part 1 : Sec 7) Solid content by weight (45 ± 5) % (IS 101 : Part 2 : Sec 2) APPLICATION INFORMATION SikaShield® Primer W-30 IN must be diluted with 20 % to 50 % clean water to achieve the desired consistency. NOTE In case of exceptional site conditions, higher dilution can be done based on

Consumption 0.200–0.400 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. Ambient air temperature +10 °C min. / +40 °C max. Substrate temperature +10 °C min. / +40 °C max. Substrate moisture content < 6 % Test method: Sika®-Tramex meter Drying time Touch dry (concrete substrate) 4 h max. Hard dry (concrete substrate) 6 h max. (ASTM D1640) 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.

BASIS OF PRODUCT DATA

All technical data stated in this Product Data Sheet are based on laboratory tests. Actual measured data may vary due to circumstances beyond our control. ECOLOGY, HEALTH AND SAFETY User must read the

most recent corresponding Safety Data Sheets (SDS) before using any products. The SDS provides information and advice on the safe handling, storage and disposal of chemical products and contains physical, ecological, toxicological and other safety-related data. APPLICATION INSTRUCTIONS Strictly follow installation procedures as defined in method statements, application manuals and working instructions which must always be adjusted to the actual site conditions. SUBSTRATE QUALITY 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. ▪

SUBSTRATE PREPARATION

Cementitious or mineral based substrates to 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 to 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. The cementitious substrates to be carefully assessed for moisture content, air entrapment, and surface finish prior to any primer application. ▪ MIXING SikaShield® Primer W-30 IN is mixed with clean water up to maximum 50 % 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 50 % by weight of the primer.