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Simulated Stone, Masonry, and Wood Products utilizing Perlite

A unique use for perlite is in the manufacture of fire resistant, lightweight, rot proof, simulated stone, masonry, and wood products for a multitude of exterior and interior applications.

Lightweight Perlite Molded Products
0034304m2.jpg (4850 bytes)Perlite simulated stone may be molded to give the appearance of brick, stone, or even wood products.  A special advantage of perlite simulated stone is its lightweight.

Traditional stone and masonry products are heavy and require more expensive structural support. With simulated stone products, traditional framing and supporting materials are usually satisfactory and installation costs can be reduced.

0034304m1.jpg (4252 bytes)A further advantage of lightweight perlite simulated stone or wood products is reduced shipping costs and ease of handling. In addition, perlite provides an insulating advantage and is rot, termite, and fire resistant. Simulated stone and wood products are excellent for hiding irregular wall surface and may be used in new construction, remodeling, and in exterior and interior applications, depending upon the binder used.

Mix Compounds
Perlite concrete and plaster aggregates conforming to ASTM specifications are commonly used in the manufacture of simulated stone or wood. Binders and other components of perlite simulated stone usually include Type I or Type III portland cement, gypsum, lime, clay, and castable or other resins. Other additions may include sand, shale, coloring agents, silicates, alkaline resistant fiberglass shorts and polypropylene or wood fibers.

Mix Designs
Mix designs for perlite simulated stone products range from 1:4 (binder to perlite) to 1:10 by volume. Mixing is accomplished with ribbon, plaster, or other mixers having low shear action. Paddle type and size should be chosen for the lowest shear rate.

Stone Product Manufacture
Simulated stone products may be formed by pouring or pressing the molding material into relief molds, by extruding or vibrating into wood or steel molds or forms, and my die cutting. Surface finish and configuration of the stone is determined by the mold being used.

Applications for Perlite Simulated Stone
Among the applications for lightweight perlite simulated stone are wood shakes, exterior siding, fireplace logs, and masonry block, brick, and stone for exterior and interior applications.
Perlite also may be used in the manufacture of adhesives, glues, and mortars used to affix simulated stone to a variety of exterior faces. An advantage of perlite in these applications is its function as a filler replacing more costly resins or heavier fillers.

Information given herein is from sources considered reliable, but no guarantee of accuracy can be made or liability assumed.  Your supplier may be able to provide you with more precise data.  Certain compositions or processes involving perlite may be the subject of patents.
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