SILRES^® BS 1803

Stir product before use.


The recommended admixture range is 0.1 % to 1.0 % of the cement content. A significant reduction in water uptake can be achieved at a concentration of 0.2 %. For post-treatment a 1:4 solution can be recommended to reduce water uptake significantly.


When used as an admixture in semi-dry concrete SILRES^® BS 1803 produces a matrix that resists water absorption without blocking pores or capillaries. The treated concrete inherently resists intrusion of damaging water and chemicals increasing the service life of the building material. SILRES^® BS 1803 prevents or at least reduces efflorescence. A strong water beading effect occurs throughout the whole concrete block.