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2. Tar paper - Wikipedia

   en.wikipedia.org/wiki/Tar_paper

   Tar paper is used as a roofing underlayment with asphalt, wood, shake, and other roof shingles as a form of intermediate bituminous waterproofing.It is sold in rolls of various widths, lengths, and thicknesses – 3-foot-wide (0.91 m) rolls, 50 or 100 feet (15 or 30 m) long and "15 lb" (7 kg) and "30 lb" (14 kg) weights are common in the U.S. – often marked with chalk lines at certain ...

3. Covering (construction) - Wikipedia

   en.wikipedia.org/wiki/Covering_(construction)

   Roofers in Germany,. In construction, covering is the exterior layer of a building's roof. The covering ensures waterproofing by directing and collecting rainwater.It also provides mechanical protection against various external elements such as dust and intrusions.

4. Underlay - Wikipedia

   en.wikipedia.org/wiki/Underlay

   Underlay is also the term for the material under roofing tiles; [1] this roofing membrane is often made of rubber and is used to seal the roof and prevent leakage. Underlayment used with roofing shingles provides a second layer of water proofing to prevent leaks and is called tar paper , roofing felt , or since the 1990s synthetic underlayment.

5. Bituminous waterproofing - Wikipedia

   en.wikipedia.org/wiki/Bituminous_waterproofing

   ASTM D226 / D226M Standard — 09: Specification for Asphalt-Saturated Organic Felt Used in Roofing and Waterproofing. [7] Type I - #15 or 15 lb. perforated or non-perforated; Type II - #30 or 30 lb. perforated or non-perforated; ASTM D4869 / D4869M Standard — Specification for Asphalt-Saturated Organic Felt Underlayment Used in Steep Slope ...

6. Metal Building Manufacturers Association - Wikipedia

   en.wikipedia.org/wiki/Metal_Building...

   Metal Building News became the industry's first tabloid-size trade publication when it began publishing in 1980. It is now called Metal Construction News, and in 1985, a second industry magazine began publishing, Metal Architecture. In 1990 MBMA member sales exceeded $1.5 billion and steel shipped was over 1.2 million tons.

7. Why norovirus is so hard to kill: Here's how to protect ... - AOL

   www.aol.com/why-norovirus-hard-kill-heres...

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