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Repairing Atlas Chalet Shingles: Donan’s Technical Position

DonanEngineering Articles, Commercial & Residential Roofing, Forensic Engineering, Hail and Wind

The Atlas Chalet shingle was a three-tab, fiberglass mat asphalt shingle with an additional applique layer of asphalt and granules over the shingle tabs.  The applique layer was for decorative purposes only to give the appearance of a dimensional-style shingle.  Atlas Chalet shingles had a 30-year limited manufacturer’s warranty and a five-year wind warranty for up to 80-mile-per-hour wind speeds.  The exposure on the shingle is 5-5/16 inches.  Atlas Chalet shingles have been discontinued as a result of severe cracking and blistering of the applique layer because of the lack of a reinforcing mat.  As these shingles have become harder to find for use in spot replacement, an alternative must be determined that is of like kind and quality.  Several shingles may be used to repair roofs covered with Atlas Chalet shingles.

The CertainTeed XT30 three-tab shingle is an option.  These shingles carry the same 30-year limited manufacturer’s warranty as the Atlas Chalet, and has therefore been proposed as a viable alternate.  The CertainTeed XT30 comes in both English and metric dimensions, depending on the manufacturing plant.  The English dimensioned shingles have a 5-inch exposure, while the metric shingles have a 5-5/8 inch exposure.  In order to perform a repair using this shingle, only the metric shingles are a viable option because of the required exposure of 5-5/16 inch to match the Atlas Chalet.  The shingles will need to be cut to match the size of the dimensions of the Atlas Chalet.  The wind warranty provided on the CertainTeed XT30 is generally a five-year warranty for wind speeds up to 70 miles per hour.  The wind resistance of the shingle can be increased by reducing the exposure and/or by adding additional sealant and six fasteners for standard installation.

While the CertainTeed XT30 is substantially similar to the Atlas Chalet in quality, three other shingles more directly meet or exceed the like kind and quality standards.  They are the Atlas Pinnacle and Pinnacle Pristine, the Malarkey Alaskan, and the CertainTeed Patriot.

The Atlas Pinnacle and Atlas Pinnacle Pristine are a dimensional-style, metric shingle with either a 5-5/8 inch or 6-inch exposure.  Depending on the location, one or both may be available.  Either shingle would need to be cut to match the dimensions of the Atlas Chalet.  They are readily available throughout the United States, and carry Florida Building Code and Miami-Dade County approvals.  The shingle carries a lifetime limited manufacturer’s warranty, and a five-year wind warranty for wind speeds up to 130 miles per hour.

The Malarkey Alaskan is a high quality three-tab metric shingle with shadows to make it appear to have dimension.  It has a 5-5/8 inch exposure. The shingle would have to be cut to match the dimensions of the Atlas Chalet.  It is currently available throughout the United States, and has Florida Building Code approval.  The shingle carries a lifetime limited manufacturer’s warranty and a five-year wind warranty for wind speeds up to 110 miles per hour.

The CertainTeed Patriot is a strip shingle with shadows to make it appear to have dimension, similar to the Atlas Chalet.  The Patriot is a metric shingle with a 5-5/8 inch exposure.  The shingle would have to be cut to match the dimensions of the Atlas Chalet.  It is currently available in Indiana, Michigan, Ohio, Western New York, Western Pennsylvania and West Virginia.  As such, the shingle does not carry Florida or Miami-Dade product approvals.  It may be possible to obtain the shingles for spot replacement in other states. The shingle carries a 30-year limited manufacturer’s warranty, and a 10-year wind warranty for wind speeds up to 110 miles per hour.

Spot replacement using any of these products will require trimming of the metric shingle to match the size of the Atlas Chalet.  It will also require careful removal of the damaged shingles on the roof by a roofing contractor experienced in spot replacement, so as not to damage any adjacent shingles in the process.  To perform the repair, the damaged shingle and one above must be unsealed, and then the fasteners must be removed from both of these shingles using a flat wonder bar.  The new shingle is inserted.  Then, the new shingle and one above it is nailed.  Finally, the new shingles must be hand sealed to the existing shingles to ensure proper sealing.