Putting New Shingles On Roof

Installing a new roof over shingles takes less time than tearing off the old roof.

Putting new shingles on roof.

Installing new roof shingles over old effectively doubles the weight of the roofing so you have to make sure your roof structure can handle the extra load. As long as it s done right and under the right conditions installing new shingles over old ones can last as long and look just as good as a complete re roof. Looks just as good and lasts as long. Installing roof shingles in 11 steps.

Although placing new roofing over old may be allowed by some codes roofovers tend to be inferior and won t last as long as a roof installed over stripped sheathing. Http bit ly 1i96g9c diy roof diy shingle apply bitumen shingles install bituminous roofing renovation roof new roof g. Use your chalk and tape measure to mark about 12 inches up on the roof for the first set of shingles. It generally takes three bundles of shingles to cover 100 square feet.

Get the right number of shingles for the job. Installing asphalt shingles over an existing shingle roof it s not ideal to install new shingles without removing the old ones but follow this pro advice if you do. That s also why building codes commonly limit re roofing to no more than two layers. Subscribe on our channel.

Measure the length of a shingle as it lies across the roof. Preparing the roof 1. Using the chalk line snap a line between the two marks to get a straight edge. Known in the trade as vertical racking or staggering this how to lay shingles method enables the roofer to install a single column of shingles all the way to the peak without the wasted back and forth motion necessary to fill several rows of stair steps.

To start installing shingles line up aluminum drip edge flush with the edge of the roof and make a pencil line at the. Remove old shingles and. Manufacturers will still. Continue to chalk additional guidelines based on the width of the shingle through at least four courses rows across.

Pull the drip edge down about a half inch from that line to. Roll out a single layer of roofing felt or tar paper which serves as a moisture barrier. Has the same manufacturer s warranty. Before laying down shingles you need to protect the roof with sheathing.

This will help determine how the shingles will lay on the. What you need power nailer or roofing hatchet tape measure roofing shovel or flat pry bar hammer drill carpenter s square straight cut tin snips utility knife chalkline broom.