Perma constructions aids private ltd. Offers modern construction chemicals to cater to all critical applications in the civil engineering industry. Perma treat -wb manufactured by the company is water based silicon water repellent. Perma treat-wb treated surfaces do not allow growth of algae and fungus hence the buildings do not show the signs of ageing. Perma treat-wb allows the cementitious surfaces to breath normally. Perma treat-wb is used for injection grouting to arrest the rising dampness. It is used on concrete, plastered or exposed brick, block surfaces, post construction dpc against rising dampness. The salient features of perma treat-wb are,