Onduvilla Over Exhisting Roof

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Onduvilla over exhisting roof.

Follow the overlapping guides that are in place on shingles. If the structure can support the added weight a typical 20 square 2 000 square foot reroof will cost at least 1 000 less than a tear off job. Know your town s regulations regarding roofing materials since some don t permit more than two roofing layers. Overlap ridge trim 7 inches.

I put ondura on my house roof over two layers of shingles 20 years ago. Apply over solid decking or up to 1 layer of shingles. Most building codes allow two layers of organic or fiberglass asphalt shingles on roofs with a 4 12 pitch or less and three layers on steeper roofs. Across corrugation with circular saw.

Onduline s lightweight roofing systems have been designed and developed with the knowledge and expertise of roofers. Position one of the uncut shingles on top of a trimmed shingle. Mark the location of the top of the uncut shingle on the felt. The onduvilla roofing system is designed to fully replace an asphalt shingle roof.

Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface. Before you reshingle a roof read our step by step guide for adding new shingles over old ones. The uncut shingle should hang a quarter of an inch over the roof edge. Installation is fast and efficient.

Since they can be laid over existing asphalt shingles they re a relatively easy product for most roof installers to lay which also eliminates the labor to remove original materials. Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros. Onduvilla is compatible with any size house and roof style where asphalt shingles have been installed. Fits many home styles.

Continue marking lines every five inches up to the roof ridge. Most standard roof structures. I ve had three hurricanes and countless numbers of bad storms with my yard being flooded with 6 20 inches of water from. We have a range of lightweight roof shingles for your diy project whether renovating or building from new.

Parallel to corrugation with utility knife. One layer is fine in most cases. Smart lightweight and efficient roof shingles.