New Roof Over Existing Roof

When roofing over your existing shingles can be a good idea.

New roof over existing roof. Use the guide we. How to install a roof over an existing roof determine the feasibility. The condition of the existing roof is critical. When you should tear off your roof and start from scratch instead.

Why installing new shingles over old shingles can be good. The new roof will be a metal roof. The method of installation varies wildly. A layer of old deteriorating shingles can make your new roof look bad.

Use premade roof trusses premade roofing trusses will be easier and take less time than installing a stick built roof. The cheapest option would be to leave the old roof in place and place the new rafters over the existing roof. We are doing all the work ourselves so tearing off the old roof would be a real problem. The roof should be in sound.

That s also why building codes commonly limit re roofing to no more than two layers. The most important part of any roof over is to first come to terms with the state of your 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.

Many arizona homeowners with shingle roofs do decide to roof over their existing shingles because. I have finally confirmed that it s allowed in ontario provided the plan passes the building inspector. Shingles that are raised or misshapen make it hard to lay a smooth flat layer of new shingles on top. 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.

It is not possible to mix materials nor to install a new layer over slate or wood tiles. Once your roof is back in tip top condition you can start looking at the various roof over options. We do not want to remove the existing roof so we are proposing to build directly over the old roof. If your existing roof is fairly old there s a good chance the shingles are damaged.

Inspect the condition of your current roof. 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. Another reason is curling shingles as you can only install a new layer if the first one is completely flat and level. Your house will probably be worth less.