New Roof Over Existing Roof

Inspect the condition of your current roof.

New roof over existing roof.

If your existing roof is fairly old there s a good chance the shingles are damaged. The new roof will be a metal roof. That s also why building codes commonly limit re roofing to no more than two layers. Use the guide we.

The condition of the existing roof is critical. The roof should be in sound. The cheapest option would be to leave the old roof in place and place the new rafters over the existing 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.

The most important part of any roof over is to first come to terms with the state of your roof. The method of installation varies wildly. When you should tear off your roof and start from scratch instead. A layer of old deteriorating shingles can make your new roof look bad.

Your house will probably be worth less. I have finally confirmed that it s allowed in ontario provided the plan passes the building inspector. How to install a roof over an existing roof determine the feasibility. Multiple layers of shingles can make it difficult or impossible for the nails to penetrate.

Use premade roof trusses premade roofing trusses will be easier and take less time than installing a stick built roof. When roofing over your existing shingles can be a good idea. Many arizona homeowners with shingle roofs do decide to roof over their existing shingles because. Another reason is curling shingles as you can only install a new layer if the first one is completely flat and level.

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. Let s start with the good. It is not possible to mix materials nor to install a new layer over slate or wood tiles.

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. Once your roof is back in tip top condition you can start looking at the various roof over options. Why installing new shingles over old shingles can be good. We do not want to remove the existing roof so we are proposing to build directly over the old roof.