Brand: Tremco

Is A Heavy Bituminous, Fibre Reinforced, Rust Inhibiting Sealing Compound, Specially Designed To Be Brushed Thickly To Any Surface. When Dry Brushable Hydroseal Is Tough And Waterproof With Good Weathering Qualities, Does Not Contaminate Drinking Water And Is Not Highly Inflammable. It Forms A Tough Skin Quickly. Great For Repairing And Waterproofing The Inside Of Iron And Concrete Tanks And Troughs. Re-Surfacing Old Malthoid, Iron And Cement Reinforced Roofs And Gutters, Stopping Leaks In Roofs And Gutters; Sealing Leaks In Tanks, Troughs, Flashings And Cappings, Under Screws And Washers And Downpipes.

Technical data: http://www.tremco.com.au/products/brushable-hydroseal.aspx