PHOTO - A Bitumized Roofing Base Application

Perlite Handbook

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Perlite as an Ultrafine Filler
Prepared by: The Perlite Institute

A cold asphalt adhesive layer is applied to the roof base substrate and the dry granulated bitumized perlite is poured in place, spread and screeded to the desired thickness and slope. Following screeding, the bitumized perlite is compresssed by 40% by rolling. Initial rolling is over plywood sheets and the final rolling is directly on the surface of the material.

Technical data given herein are 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.

Updated:
14-Nov-2001

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