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The new roof will be a metal roof.

New roof over existing roof.

The roof should be in sound. When roofing over your existing shingles can be a good idea. The condition of the existing roof is critical. Shingles that are raised or misshapen make it hard to lay a smooth flat layer of new shingles on top.

I have finally confirmed that it s allowed in ontario provided the plan passes the building inspector. The most important part of any roof over is to first come to terms with the state of your roof. You can save money because there s no dump fee for removing your old roofing and there s no need for additional felt paper over the old roof. Premade trusses will form the skeleton of your new roof above your old roof.

Installing a new roof over an existing one can only be done if you have shingles because you can only put shingles over shingles. Use the guide we. Use premade roof trusses premade roofing trusses will be easier and take less time than installing a stick built roof. If your existing roof is fairly old there s a good chance the shingles are damaged.

Why installing new shingles over old shingles can be good. Your house will probably be worth less. Another reason is curling shingles as you can only install a new layer if the first one is completely flat and level. 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.

Multiple layers of shingles can make it difficult or impossible for the nails to penetrate. A layer of old deteriorating shingles can make your new roof look bad. When you should tear off your roof and start from scratch instead. Let s start with the good.

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. We are doing all the work ourselves so tearing off the old roof would be a real problem. Inspect the condition of your current roof. Once your roof is back in tip top condition you can start looking at the various roof over options.

Many arizona homeowners with shingle roofs do decide to roof over their existing shingles because. The method of installation varies wildly. How to install a roof over an existing roof determine the feasibility. We do not want to remove the existing roof so we are proposing to build directly over the old roof.

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