This led to the establishment of settler-colonies in Algeria, Tunisia, South Africa, Namibia, Angola, Mozambique, and central African areas like Zimbabwe and Zambia. Eventually the overriding economic factors led to the colonization of other parts of Africa.
(July 2009) (Learn how and when to remove this template message) Tar paper is a heavy-duty paper used in construction. Tar paper is made by impregnating paper or fiberglass mat with tar, producing a waterproof material useful for roof construction. Tar paper is distinguished from roofing felt which is impregnated with asphalt instead of tar, but these two products are used the same way, and sometimes are informally used as synonyms. Tar paper has been in use for centuries.
Because flat roofs do not slope rainwater away and drain it, it is vital that flat roofing materials are as water-resistant and watertight as possible to prevent serious damage to the roof, the rest of the building, and itâs contents. New types of flat roofing material are being used that offer more in the way of protection. Firestoneâs EPDM (Ethylene Propylene Diene Monomer) is a synthetic rubber membrane that is supplied literally in one piece, cut specifically for your flat roof.