Integral Waterproofing Additive

DESCRIPTION

Brunopel IWP is an additive based on an alkaline soap of mixed fatty acids, designed for use in sand/cement mixes following the insertion of a chemical dpc. It is common in a wall suffering from rising damp for salts carried in the water to concentrate in the wall. As the wall dries out following insertion of a damp-proof course these salts may be deposited on or near the surface and can give rise to efflorescence.

If the salts are hygroscopic, damp patches may also develop when the ambient humidity is high unless steps are taken to ameliorate the problems. Faliure to do so may allow or give rise to other dampness problems of a more persistent nature. It is essential, therefore, that a suitable replastering schedule is adopted following the insertion of a damp-proof course. Brunopel IWP is designed to minimise the passage of liquid water through the pore structure of cement renders, thereby preventing the transfer of salts to the surface. Replastering should be carried out as long as possible after the insertion of the remedial damp-proof course, but in any case a drying period of at least 14 days should be allowed between installation and replastering wherever possible.

Brunopel IWP should be used in accordance with the general reccomendations in BS 5492:1990 Code of Practice for Interior Plastering.