Stormdry Masonry Protection Cream 5L

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Stormdry is a colourless [1], breathable, water-repellent treatment for brick, concrete and stone [2] walls. It is supplied in the form of a deeply penetrating cream that is applied to the wall surface using a roller or brush. Once Stormdry has been applied to the wall surface in a single coat and will permeate deeply before curing to form a water-repellent barrier for a BBA approved 25 years. Typical applications for Stormdry include:

Protecting against penetrating damp (rain penetration)

Improving the thermal resistance of masonry by keeping it dry – verified by the Energy Saving Trust

Improving the performance of cavity wall insulation by protecting it from moisture

Improving flood resistance of masonry


Breathable and Long Lasting

Stormdry is based on carefully selected silanes and siloxanes which line the pores of the masonry to form a water-repellent silicone matrix. Because it works by lining the pores rather than blocking them the masonry is allowed to breathe and does not suffer from increased frost damage (spalling). Due to its novel formulation and deep penetration, Stormdry is resistant to UV light and other forms of degradation, resulting in a life expectancy of 20 – 30 years.