Allura siding prefinished with its colormax system comes in an assortment of colors and stains and includes a 15 year finish warranty.
Allure siding and fly ash.
Fly ash is a material that would otherwise be disposed of in landfills.
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Sand fly ash or clay is added to add form and bulk to the slurry.
This product uses fiber cement and ash.
Then the mixture is pressed into molds that form planks.
It says that while small amounts of fly ash may be all right excessive amounts make the siding too brittle for exterior use.
The problem the lawsuit says is that allura uses excessive amounts of fly ash in creating its siding instead of common grain and silica used by other fiber cement siding manufacturers.
Siding is exposed to weather cycles of hot and cold it says and expands and contracts if there is excess moisture in it.
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The complaint alleges that the makers use excessive amounts of fly ash instead of grain and silica.
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Allura bought the patent rights to certainteed siding product.
This is the reason why certainteed was sued for millions because of the shrinkage problems.
The excessive amount of fly ash in the siding and its uneven distribution then leads to brittleness porosity and other problems which the better grain and silica sand formulations do not have.
According to the lawsuit the fly ash a byproduct of coal burning power plants that s cheaper than cement became unevenly distributed throughout the siding during the manufacturing process.
At the time of the sale certainteed siding was facing a large class action lawsuit which settled shortly after the sale.
The molds often have a texture that will be pressed into the surface of the plank creating a faux wood grain look.
According to the lawsuits allura allegedly uses large amounts of fly ash in the manufacturing process causing the fiber cement products to become brittle and porous.
Boral s truexterior siding and trim products made primarily from recycled polymers and fly ash feature reversible smooth and wood grain textured sides and can be cut and installed with standard woodworking tools.
