Enviroseal By Wykamol Available From Greengates Builders Merchants Accrington, Lancashire
Enviroseal is an effective water repellent liquid based on a solvent free silicone/siloxane emulsion for use above ground on porous brickwork, cement renderings, asbestos, cement/mineral boards, unglazed tiles, cast concrete, roughcast, stonework (including calcareous
materials, i.e. those containing limestone), wood, canvas and leather.
Surfaces treated with Envirosealremain permeable to vapour so that moisture within the structure does not remain trapped.
Enviroseal is clear and colourless and will not normally alter the appearance of treated surfaces. In some circumstances, however, very slight darkening may occur.
The treated masonry surface will not prevent the penetration of water at pressures greater than approx. 1.4kg cm2 (20lbs per square inch).
Depending upon the nature of the surface to be treated and conditions of exposure, two coats of Envirosealcan be effective for at least 10 years.
Note: Enviroseal is NOT a dustproofing sealer or a damp-proofing membrane.
Substrates should be prepared by cleaning to remove all surface contaminants, including fungal/mould growths (e.g.Wykamol Microtech Biocide Data Sheet). Mould release agents or decorative paints should be removed completely.
Structural defects, particularly mortar joints, repointing or rendering must be made good and allowed to cure for at least 1 month before treatment.
Enviroseal will not prevent ingress of water through cracks or defective joints.
If sandblasting / microblasting are carried out, ensure that the surface is hosed down with water extremely thoroughly. Repeat twice. Allow to dry. This is to ensure that the pores within the stone are not blocked with sand which may affect the application.
Surfaces must be substantially dry before application of Enviroseal, and it is recommended that Treatment is carried out following a period of dry weather.
Nonabsorbent surfaces should be treated.
Where backings are heavily contaminated with salts, there is an increased risk of spalling of surfaces treated with water repellents.
The application of Envirosealis not recommended under these circumstances. If doubt exists, advice should be sought from The Technical Department of The Wykamol Group.
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