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  • Masonry Water Repellent Rj Wp03 65288 E 65289 - China

    price: contact company for price


    Equivalent Brand: Dow Corning 520

    WP03(E) is a type of low molecular weight siloxane / silane emulsion. The siloxane and silane content contain excellent hydrophobic groups of methyl and octyl, as well as active groups of alkoxy, hydroxyl and epoxy which are easy condensed and hydrolysis. Thus when WP03(E) penetrate into pores of porous brick concrete, its active groups reacts with hydroxyl in substrate or self-condense to form a waterproof network structure called hydrophobic film, which prevents water form penetrating, but does not affect permeability to gases and water vapour.

    Applicated in reinforced concrete buildings, inside and outside metope, roofing tiles, roofs, concrete block brick, colored pavement brick, airport runways, gypsum board, flooring, boxes, etc., also for corrosion and waterproof and extending life of ancient building.

    Technical Index

    Property Specification

    Appearance: Milky white liquid

    Solid Content: 40%min

    PH: 5.5-7.5

    Weather resistance: > 960 hours (6 kW artificial weathering test)

    Diluter: Water

    Dilution ratio: 1:5~1:8

    Centrifugal Stability: No layers after centrifuge at 3000 rpm for 30 min

    Water repellency: Water-drop on treated substance not be absorbed in 2 hours

    Reduce 80% water absorption rate after treated

    Penetration depth≥5mm


    Compared with WP01N, WP03(E) has the following advantages:

    A. Be neutral, but WP01N is strongly alkaline , PH ≧ 12, having strong irritation to skin.

    B. Can be applicatd in much more types of building materials, no traces after dry.but because WP01N reacts with CO2 in the air, will form carbonate which is white powder, affecting the appearance of building materials.

    C. Better water repellent effect than WP01N. Water absorption rate of treated building material will reduce 80%.


    50kg plastic barrel or according to customer request.


    Ⅰ. Surface must be clean, dry and free of contaminants before operating.

    Ⅱ.For alkaline substrates like cement concrete, lime walls, gypsum board, can dilute with water 5-8 times, then spray and brush directly to the substrate 2 times. it would be very good water repellent effect after several days drying. More days, much better.

    For neutral substrates like natural stone, wood, can dilute with water also, but better adding 0.3-0.5% organic tin catalyst of effective content . spray and brush directly to the substrate 2 times. Under dry and windy condition, it will show excellent waterproof effect after one day. Longer time. much better.

    Ⅲ. Churn it fully before operating. Avoiding snow and frost conditions after operating.

    In summer, it only need 4 hours to form film operating outdoor. But in winter, it need 10 hours. Better do a water absorption test after 24 hours.


    Sealed storage under 5-30℃ temperature. Avoid high temperature and freezing conditions.

    Shelf life

    Shelf life: 12 months.

    Company Contact:

    • Phone: 8657128055280

    • Address: Office add: Floor 12th, No.99, Huaxing Rd, Hangzho, Hangzhou , China

    • Email: Email

    Published date: August 1, 2013 -

    • Business Description: involved in international trade import export of goods, products, and services

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