Compléter It's a Slippery Slope!Version en ligne LL Comp Build Know Inventions; It's a Slippery Slope! par Stephanie Turner 1 flat timbers less thaws globe problems Houses in northern parts of the often have roofs with steep slopes . It is easier to build house with roofs . But flat roofs cause in winter . Snow can pile up thickly on flat roofs . It cannot be removed until it . If more snow falls , it just sits on the flat roof . If snow on the roof , it can cause a lot of damage . The thick snow can split the roof of houses with flat roofs . But snow slides off steep sloping roofs and causes damage .
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