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Lath has expanded to mean any type of backing material for plaster. This includes metal wire mesh or expanded metal that is applied to a wood or metal framework as matrix over which stucco or plaster is applied, as well as drywall products called gypsum or rock lath. [2] Historically, reed mat was also used as a lath material.
This type of mesh is a square grid of uniformly placed wires, welded at all intersections, and meeting the requirements of ASTM A185 and A497 or other standards. [1] The sizes are specified by combining the spacing, in inches or mm, and the wire cross section area in hundredths of square inches or mm2.
Wire mesh, often used for exterior stucco, is also found in combination or replacement of lath and plaster which serves similar purpose. Traditional lath and plaster (including rock and metal lath varieties) has superior sound-proofing qualities when used with lime or gypsum plaster, which is denser than modern drywall.
The metal commonly used is iron or some type of steel, and the mesh is made with wire with a diameter between 0.5 mm and 1 mm. The cement is typically a very rich mix of sand and cement in a 3:1 ratio; when used for making boards, no gravel is used, so that the material is not concrete.
Fortified roof. The Federal ... The cost of glazing can vary depending on the type of material used and the complexity of the project. ... Covering exterior attic vents with wire mesh to keep ...
Expanded metal is frequently used to make fences, walkways, and grates, as the material is very durable and strong, unlike lighter and less expensive [dubious – discuss] wire mesh. The many small openings in the material allow flow through of air, water, and light, while still providing a mechanical barrier to larger objects.
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