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.
What is roofing underlayment? Roofing underlayment is a water-resistant or waterproof barrier material that is installed directly onto your roof deck. It is applied under all other roofing materials as an added layer of protection from severe weather. There are three main types of roofing underlayment: Asphalt-saturated felt. Non-bitumen synthetic underlayment. Synthetic underlayment (technically non-bitumen synthetic underlayment) is the preferred underlayment of most roofing professionals today. Synthetic underlayment basemat is saturated in asphalt. The addition of fiberglass gives synthetic products superior tear resistance and stability.