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Composite shingle

a technology of composite shingles and roofing shingles, which is applied in the field of composite roofing shingles, can solve the problems of high price of slate and shake, fire hazards, and asphalt products that do not have the structural rigidity of slate or shak

Inactive Publication Date: 2005-04-28
JOLITZ RANDAL J
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention is a roofing shingle made of a mixture of polyolefin based polymer and filler. The blend includes 70-35% polymer and 30-65% filler. The preferred mineral is crushed limestone and the preferred polymer is polyethylene. The shingles can be molded to look like traditional roofing or any other configuration that may be useful for a particular roofing application. The technical effect of this invention is to provide a composite roofing shingle that is lightweight, durable, and can be easily installed on various roofing configurations."

Problems solved by technology

However, wood shakes are considered a fire hazard and slate is very expensive and subject to cracking.
However, asphalt products typically do not have the structural rigidity of slate or shake.
However, those products are subject to denting and breakage.
Although these composite shingles are capable roofing systems, there are some problems.
For instance, the large amount of filler causes the product to be excessively heavy while the low amount of polymer reduces flexibility and increases the possibility of cracking and splitting.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] The preferred roofing system is shown in FIGS. 1 and 2. The preferred shingles are composed of a mixture including a polymer and an inorganic. Colorants and other additives may be used to improve or alter the aesthetics or performance of the shingles. Nevertheless, the preferred composition includes a polyolefin and an inorganic filler.

[0012] The polymer component is a polyolefin such as polyethelene, polypropelene or mixture of polyolefin polymers. Preferably, this component is polyethelene. The preferred range of this component is 35 to 70% of the composition by weight.

[0013] The filler material may include any number or combinations of materials. The preferred filler is an inorganic material such as sand, talc, mica, slate, shale, limestone or fly, volcanic or bottom ash. The preferred filler is crushed limestone. Use of various materials can affect the resulting color of the shingle so selection of the filler can reduce the need for a colorant

[0014] The preferred compo...

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Abstract

Disclosed is a composite roofing shingle. The preferred roofing shingle includes a mixture of a polymer and a filler. The preferred blend includes between about 35-65% polyethylene and 50-70% crushed limestone filler.

Description

BACKGROUND [0001] 1. Field of the Invention [0002] The present invention relates to roofing shingles. Specifically, the present invention relates to composite roofing shingles composed primarily or exclusively of a polyolefin polymer and a filler. [0003] 2. Background of the Invention [0004] Traditional roofing products include asphalt shingles, wood shakes, slates, and metal panels. Each of these products has benefits. For instance, wood shakes and slate roofing are very aesthetic. However, wood shakes are considered a fire hazard and slate is very expensive and subject to cracking. [0005] Less expensive roofing products have been introduced to simulate wood shakes and slate roofing. Some asphalt shingles have been developed that resemble slate or shake roofing. However, asphalt products typically do not have the structural rigidity of slate or shake. Metal and plastic shingles have been developed that simulate shake and slate. However, those products are subject to denting and bre...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E04D1/20E04D1/22E04D1/26
CPCE04D1/20Y10T428/24372Y10T29/49799E04D1/22E04D1/14
Inventor JOLITZ, RANDAL J.
Owner JOLITZ RANDAL J