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In earlier days, birch bark was occasionally used as a flashing material. [7] Most flashing materials today are metal, plastic, rubber, or impregnated paper. [8]Metal flashing materials include lead, aluminium, copper, [1] stainless steel, zinc alloy, other architectural metals or a metal with a coating such as galvanized steel, lead-coated copper, anodized aluminium, terne-coated copper ...
There are various lead abatement techniques to remove residential lead-based paint and lead in household dusts. Encapsulation and enclosure makes the hazard of lead-based paint inaccessible, while chemical stripping, removal of abrasives, scraping with the hand, and component replacement are effective in permanently removing lead-based paints from households. [5]
In the past, lead was added to household paint to increase its drying speed and improve the durability and life of the finish. However, Lead is toxic and is a possible carcinogen. In 1978, the U.S. Consumer Product Safety Commission banned the residential use of lead-based paint containing ≥0.06% lead (600 ppm). [2] [3] [4]
Lead-based paint inspections will evaluate all painted surfaces in a complex to determine where lead-based paint, if any, is present. The procedures for lead inspections is outlined in the United States Department of Housing and Urban Development (HUD) Guidelines, Chapter 7, 1997 Revision. The other testing is a lead-based paint risk assessment.
France, Belgium and Austria ban white-lead interior paint. 1914 Pediatric lead-paint poisoning death from eating crib paint is described. 1921 Tetraethyllead is first used in gasoline. 1921 National Lead Company admits lead is a poison. 1922 League of Nations bans white-lead interior paint; US declines to adopt. 1943
The National Safety Council emphasizes that everyone should be aware of the potential presence of lead paint in homes built prior to 1978, and notes that…”such awareness is particularly important for those engaged in the building trades, as well as do-it-yourselfers, to learn how to perform their work in a lead-safe manner.”
Low-VOC paint types include latex (water-based), recycled latex (water-based), acrylic, and milk paint. [1] [2] The labels of paint cans can be checked for the following information: To be considered low-VOC, the paint should contain <50 g/L of VOC. [citation needed] To be considered zero-VOC, the paint should contain <5 g/L of VOC. [citation ...
In building construction today some lead flashing is welded but soldered copper flashing is much more common in America. In the automotive body repair industry before the 1980s, oxyacetylene gas torch welding was seldom used to weld sheet metal, since warping was a byproduct as well as excess heat.
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