![]() Cementitious Coating SystemsĬement-based coatings are typically trowelled onto concrete masonry walls or brushed on using a coarse-fibered brush. Both the liquid-applied and sheets are covered with a protection board, which protects from construction traffic and during backfilling. Liquid coatings can be applied by airless spray, roller, or brush. Rubberized asphalt is also available in a form that can be melted at the jobsite, then spread to completely cover foundation walls. After the membrane is placed on the wall, the surface is rolled with sufficient pressure to ensure adequate adhesion. Adjacent pieces of membrane must be lapped, and the top and bottom edges sealed with mastic to provide continuous protection from water entry. The membrane is adhesive on one side and protected by a polyethylene film on the other. Rubberized asphalt sheet membranes are applied over a primer, which is used to increase adhesion of the sheet. These systems provide a continuous barrier to water with the ability to elastically span small holes or cracks. Most of these are applied as sheet membranes, although some are available as liquid coatings. Rubberized Asphalt SystemsĪ wide variety of rubberized and other polymer-modified asphalt waterproofing systems are available. ![]() The following discusses details of some of the prescriptive code methods for waterproofing and dampproofing. (3.2 mm) coat of surface-bonding mortar complying with ASTM C887 (ref.
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