Since 1977, Owens Corning has been a leading manufacturer of shingles and accessories for the residential roofing market. Though best known for our PINK® Fiberglas insulation, Owens Corning is also a leader in the roofing market. Westshore Roofing, Inc., Inc is a Preferred Owens Corning Contractor. This credential allows us to offer the Preferred Protection Limited Warranty on all of the Owens Corning shingles we install. The benefits of this warranty is best describe to you when one of our roofing consulates visits your home for an on site roof inspection/estimate.