Stormdry should only be applied to dry, porous surfaces. It should not be applied over sealed or painted surfaces and is intended for aboveground use only. Only apply when rain is not forecast for the next 24 hours. For the treatment to be successful it is essential to check all joint and roof connections. Hairline cracks up to 0.3mm can be ‘bridged’ by Stormdry, however, it may be necessary to fill cracks in brick/ stonework and repoint using a suitable sand/lime or sand/cement mortar incorporating Stormdry Repointing Additive. Dirty surfaces should be cleaned before the application of Stormdry Masonry Protection Cream to the recommendations given in BS8221-1:2000, “Code of practice for cleaning and surface repair of buildings. Cleaning of natural stones, brick, terracotta and concrete.” DO NOT USE DETERGENTS. Application to structures containing high levels of salt should be avoided.
Stormdry has been formulated to be colourless once cured. However, very slight darkening may occur when it is applied to some substrates. Although this will usually fade over time, a small, representative and inconspicuous test area should always be treated before full treatment begins.
Carry out surface preparation as described above. Remove any loose mortar, dust etc… using a masonry brush. When biological growth such as moss, algae or lichen needs to be removed, apply Soluguard Multi-Surface Biocide in accordance with instructions.
Stormdry can be applied by brush around details such as windows. Target coverage is 200ml/m2, dependent on the masonry characteristics. Care should be taken to ensure that Stormdry does not splash onto glass, paintwork, plants, etc…
Larger areas can be covered more quickly using roller application. Stormdry can also be applied by electric roller or spray – call our technical department for details.
Check for any “missed” areas that have not been treated (e.g. voids in brickwork, deep mortar beds) and apply Stormdry to these areas using a brush.
Stormdry appears white immediately after treatment – making it easy to tell which areas have been treated.
As Stormdry is formulated to penetrate deeply into masonry itcan take up to two months after application for a noticeable “beading effect” to appear when rainfall strikes the wall. The masonry will be resistant to light rain after two hours.