Bituminous waterproofing

Bituminous waterproofing

Bituminous waterproofing systems are designed to protect residential and commercial buildings. Bitumen is a mixed substance made up of organic liquids that are highly sticky and viscous, and are waterproof.

Contents

Roofing felt components

Bituminous membranes are made up of more than one product:

Bitumen - Mixed with a filler component such as limestone or sand. Polymers are added to the bitumen such as APP (atactic polypropylene) a plastic additive that gives rigidity and tear resistance, or SBS (styrene butadiene styrene) a rubber additive that gives more elastic benefits.
Base Products - Polyester, fibre glass, rag fibre (hessian), and paper. These products are bought in roll format and are pulled through the bitumen mixes on huge rollers. The base product becomes saturated in huge tanks by the tar like bitumen substance, creating rolls of waterproof material.
Mineral - (Optional) Small granules are added to the top of the felt, decreasing the products fire vulnerability.
Thin, transparent film - This product is added to the base of the felt during manufacturing on all torch-on products. This stops the felt from sticking to itself when rolled up during the packaging process.

  • A flat roof under construction. Note the drainage pipes which that still need to be hooked up in the openings made for them.

Benefits

Bituminous roofing products are used for waterproofing roofs on buildings.

  1. Benefits include that they move with the structure and do not absorb water. Bitumen is a hydrocarbon and is created from crude oil.
  2. The products have an extremely long life span, with most membranes having BS (British Standards) marks against each product name.
  3. The fumes given off during installation are not harmful to human health and there is low noise pollution during application.
  4. Bituminous membranes protect insulation and can reflect harmful sun rays. New products also contain photovoltaic cells that can produce solar energy.
  5. Bitumen is not water soluble, non-biodegradable, not classified as carcinogenic and does not release harmful toxins.

See also

External links


Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • Waterproofing — Waterproof or water resistant describes objects unaffected by water or resisting water passage, or which are covered with a material that resists or does not allow water passage. Such items may be used in wet environments or under water.… …   Wikipedia

  • Asphalt — Note: The terms bitumen and asphalt are mostly interchangeable, except where asphalt is used as an abbreviation for asphalt concrete For other uses, see Asphalt (disambiguation). Natural bitumen from the Dead sea …   Wikipedia

  • Roof — A roof is the covering on the uppermost part of a building. A roof protects the building and its contents from the effects of weather. Structures that require roofs range from a letter box to a cathedral or stadium, dwellings being the most… …   Wikipedia

  • glass felt — noun glass fibers bonded into a sheet with resin and suitable for impregnation with asphalt in the manufacture of bituminous waterproofing, roofing membranes and shingles …   Wiktionary

  • blackjack — /ˈblækdʒæk / (say blakjak) noun 1. (formerly) a large drinking cup or jug for beer, ale, etc., originally one made of leather coated externally with tar. 2. the black flag of a pirate. 3. Colloquial a thick black bituminous waterproofing compound …  

  • Oil sands — The Athabasca oil sands in Alberta, Canada, are a very large source of bitumen, which can be upgraded to synthetic crude oil. Bituminous sands, colloquially known as oil sands or tar sands, are a type of unconventional petroleum deposit. The… …   Wikipedia

  • Литой асфальтобетон — …   Википедия

  • Flat roof — A flat roof is a type of covering of a building. In contrast to the sloped form of a roof, a flat roof is horizontal or nearly horizontal. Materials that cover flat roofs should allow the water to run off freely from a very slight… …   Wikipedia

  • Petroleum seep — For other uses of seep see Seep (disambiguation) Petroleum seep near the Korňa in northern Slovakia. A petroleum seep is a place where natural liquid or gaseous hydrocarbons escape to the earth s atmosphere and surface, normally under low… …   Wikipedia

  • coal tar — A by product obtained during the destructive distillation of bituminous coal; a very dark semisolid of characteristic naphthalenelike odor and a sharp, burning taste; used in the treatment of skin diseases. * * * coal tar kōl n tar obtained by… …   Medical dictionary

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”