външна или вътрешна топлоизолация
http://hectoritcv261.wpsuo.com/12-helpful-tips-for-doing-hidroizolacia-na-osnovi-na-ksa
Waterproofing a loo is critical to stay away from water wreck, mould development, and deterioration of parts. Here are key sides to evaluate: 1. Areas to Waterproof: - Showers and Bathtubs: Use water resistant