Concrete and Masonry Weatherproofing Sealer


Westox Water Repellent is a clear formulated poly functional silane siloxane, providing
maximum protection for concrete and masonry surfaces.


Westox Water Repellent penetrates and chemically reacts with all cementitious surfaces,
protecting them against, spalling and re-bar corrosion by locking out water and harmful
waterborne contaminants. Westox Water Repellent will not discolour or otherwise alter the
appearance of concrete and masonry surfaces.


Maximum water repellency

Alkali Stable

UV stable

Cost effective

Protection barrier against chloride laden water

Can be applied to dry or damp surfaces

Chemically bonds to surface, providing long term durability

Reduces efflorescence




Active Ingredient Content


Application Method

Drying times

Full cure time

Theoretical coverage per coat

(2 flood coats required)


12-14 (W/W)%


Roller, brush or low pressure fan jet pump spray

Touch 20-40 minutes @ 25°c

7 days

Brick 2 – 5m² per Litre

Concrete 5m² per Litre
Concrete (steel trowel) 7.5m² per Litre.



Coverage rates are intended as a guideline only. The texture and absorption characteristics of
the surface will determine the actual coverage rate.


Application should not proceed during inclement weather.
Westox Water Repellent will react with airborne water vapour.
Do not leave lid off container when not in use.
Not recommended for below grade waterproofing or application where water pressure is from
interior of wall.
Westox Water Repellent will not prevent penetration through unsound or cracked substrates.
If Water Repellent is applied on or near buildings containing foodstuff, they should be removed
prior to application and until material has fully dispersed.
To prevent damage to nearby shrubbery and landscaping, cover or protect with a drop sheet.


Surface cleanliness is critical to final appearance of substrates treated with Westox Water
All oil, grease, form release agents and air pollution deposits must be removed prior to
All surfaces are to be structurally sound.
Mortar joints and masonry that has voids, or is cracked, or contains weak or unsound material
must be repaired prior to application.
New concrete, new masonry and restoration work must reach full 28 day cure strength before
application. Should high salt content be present, desalinate with Westox Cocoon.


Wipe off any excess material sitting on top of low porosity tiles or tracking will occur.


Westox Water Repellent is a single component solution, ready to use from the container.
The substrate surface temperature should be above 5°c and below 35°c.
To provide adequate coverage in a minimum amount of time, use low pressure airless
(knapsack) spray and flood coat the surface, starting at highest point.
Apply in a uniform manner in sufficient quantity to completely wet out the substrate.
Overlap each pass to avoid gaps and areas of insufficient coverage.
Apply second coat, wet on wet i.e. while the first coat is still wet.
Should high salt levels be present desalination is recommended prior to the application of
Westox Water Repellent refer to Westox Cocoon Data Sheet.


Wash all equipment immediately after use in white spirit.


5 Litre.
20 Litre.


6 months, in unopened container.


Refer to Westlegate Pty Ltd Material Safety Data Sheet (MSDS) for instructions.
Provide adequate ventilation during application
Repeated or prolonged contact may cause injury to skin or eyes.
Repeated or prolonged inhalation of vapour may cause respiratory irritation or intoxication.
Do not cut or weld containers.
Westox Water Repellent is flammable, keep away from heat, sparks and open flames.
Refer to the Westlegate Pty Ltd Material Safety Data Sheet (MSDS) for instructions.


This product will permanently mark and stain glass, mirrors, auto paints and powdered coatings, therefore take
required action to prevent product from contact by masking or covering all areas except the area that is to be
treated. This product is not suitable for application by conventional high pressure spray equipment that will atomize
or vapourise the product. Application should be carried out by low pressure (knapsack) garden type sprayer or
suitable airless equipment that does not atomize or vapourise. Flood coating is the general term stated for