Nā Huahana Paʻa wai
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ʻApelika alanui māwae Polyurethane pale wai, i uhi ʻia ka polimer wai ʻole, ʻo ka paia ʻo ka paia pena pale wai, ka pu wai ʻole, ka polyurethane ka uhi ʻana i ka hale, ka lipine seam sila no ka mālama ʻana i ke alanui.
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ʻO ka polimer i hoʻololi ʻia i ka bitumen uhi wai
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ʻO ka membrane wai hoʻopaʻa paʻa ponoʻī
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ʻOihana kemika wai hoʻohui i ka silicone repellent hydrophobic agent no ka pahū wai