External Waterproofing – Stormdry
‘Stormdry’ is a revolutionary product, independently tested by the University of Portsmouth and developed by Safeguard Europe to prevent water penetrating masonry. It is a colourless, breathable water repellent treatment for brick and stone constructed walls.
All masonry walls absorb water during rainfall and then release it in dry weather conditions. This is part of the normal functions of a wall and should not cause any problems or damage. However in periods of prolonged rainfall, walls can become saturated and penetrating damp may occur inside the building. This is especially relevant with solid walls or where cavity wall insulation has been installed incorrectly or where it shouldn’t have been installed in the first place.
When masonry gets wet, it also becomes less thermally efficient than when it is dry, which means that buildings constructed with solid walls lose more heat through them when they are wet.
Stormdry is different because its applied as a cream in one coat and permeates deeply into the masonry before curing to form a water repellent barrier that provides protection against penetrating damp and improves the thermal efficiency of masonry by keeping it dry. It will even bridge small cracks (0.3mm or smaller) but of course any large cracks should repaired and mortar pointing should be in good condition.
Stormdry is so good at preventing penetrating dampness it has been recognised as an energy saving product by HMRC and when applied by a professional installer is subject to only 5% VAT!