Rubberized asphalt combines a small amount of synthetic rubber with asphalt and is coated with a polyethylene layer to form sheets.Waterproofing systems to consider include: Keep in mind these three ways to reduce the risk of water damage in your house: choose the site carefully, plan the drainage both at and below the surface of the house, and waterproof your house. Waterproofing can be a challenge in earth-sheltered construction. It can also take more diligence to resell an earth-sheltered home, and buyers may have more hurdles to clear in the mortgage application process. The principal downsides to earth-sheltered houses are the initial cost of construction, which can be up to 20% more than a conventional house, and the increased level of care required to avoid moisture problems, both during construction and over the life of the house. Finally, earth-sheltered houses can cost less to insure because they offer extra protection against high winds, hailstorms, and natural disasters such as tornados and hurricanes. In addition, plans for most earth-sheltered houses "blend" the building into the landscape more harmoniously than a conventional home. Earth-sheltered houses also require less outside maintenance, and the earth surrounding the house provides soundproofing. On the plus side, an earth-sheltered home is less susceptible to the impact of extreme outdoor air temperatures than a conventional house. Like any home design, earth-sheltered houses have advantages and disadvantages.
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