Low freezing point roofing shingle containing a chloride salt
OwnerDana M. Pettinatoinventor
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Abstract
The present invention relates to asphalt shingles containing one or more chloride salts. The shingles disclosed herein remain flexible and pliant at sub-freezing temperatures, thereby preventing snow and ice from creeping underneath the shingles. The shingles are comprised of from 13 to 31% by weight of a chloride salt selected from the group consisting of calcium chloride, magnesium chloride hexahydrate, potassium chloride, sodium chloride, and mixtures thereof; and from 87 to 69% by weight asphalt.
Claims10
A roofing shingle comprised of asphalt sheet material having dispersed therein from 13 to 31% by weight of chloride salt selected from the group consisting of calcium chloride, magnesium chloride hexahydrate, potassium chloride, sodium chloride, and mixtures thereof.
Dependencies are inferred from the claim text.