196 Repair & Renovation Guide or or dB Block Multipurpose paste HYDROSTOP ROOF White cementitious one-component flexible waterproofer for flat roofs DS-220 Elastomeric waterproofer for roofs (liquid rubber) HYDROSTOP-PU Polyurethane-based roof waterproofer ΧΡΩΜΑ Renovations - Rooftop ALTERNATIVE SOLUTION ... and even if there are reasons that do not allow for the application of a thermal insulation system on the roof... There is a solution! The application of dB BLOCK (p. 240) as a substrate for roof waterproofing coatings, ensures the absolute waterproofing of the surfaces over time), even in case that the top waterproofing coat is damaged or has defects in spots or sections. Due to its exceptional flexibility, it will follow the expansions and contractions of the surfaces and will not be affected by the micro-vibrations of the substrate and temperature variations. Apply it directly over sound concrete, without primer. Its application perfectly covers hairline and small cracks, as well as small imperfections of the substrate without using a reinforcing mesh. On unstable or loose cementitious surfaces, and before the application of dB BLOCK, first apply the micromolar stabilizer AQUAFIX (p. 230) with a paint roller. Choose the waterproofing product for the surfaces depending on the use that the roof will have. Waterproof by using flexible cementitious waterproofers, such as HYDROSTOP ROOF (p. 258) or TWO-COMPONENT HYDROSTOP (p. 257), or by using acrylic waterproofers for roofs, such as DS-220 (p. 243) or even with the polyurethane-based waterproofers such as HYDROSTOP-PU (p. 258) of DUROSTICK. The overall benefits of applying dB BLOCK as an undercoat for the roof waterproofing product are to extend the life of the top waterproofing coat, thermal protection of the coated surfaces, and significant energy savings. Watch the application of dB Block on a roof, on our channel Waterproofing system for roofs Extends the life span of the top waterproofing coat
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