Roof On Top Of Another Roof

Use 1 5 or 1 75 inch roofing nails.

Roof on top of another roof.

Your house will probably be worth less. By placing shingles on top of a damaged roof you ll affect the way the roof looks. As you can see there are many benefits to installing a new roof over your existing one and we do many of these for arizona homeowners. 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.

This was a first. Assuming your old roof is in good shape the additional layer can serve as added protection in case a top shingle gets blown off in a storm. Chances are your roof structure was designed for a dead load of one layer of shingles plus extra for snow and a safety margin. A common house roof pitch is 5 by 12 which means it slopes up from the wall at 5 inches per foot.

The shingles likely won t last as long so the job could actually end up costing you more in the long run. Was inspecting a home on the old navy base in orlando and when accessing the attic they had placed a new roof trusses and all on top of the old roof. Unfortunately the money you save by avoiding a full roof replacement comes out of the value of your house. I was floored when i saw the old shingles.

Let me get this straight your saying they built an entire new roof on top of the original one already in place. Shingles that are raised or misshapen make it hard to lay a smooth flat layer of new shingles on top. More difficult to check deck when you tear off the old roof you get a look at what s underneath. Make sure the pitch of the trusses is the pitch that you want for your new roof.

If there are any pros to overlaying a roof it s saving a little bit of money. The installation of metal roofing is often easier and faster than other roof types and because of its simple design and generally large size can actually be installed directly on top of existing roofing materials like asphalt shingles and foam roofing. Since it s being put on top of another less than perfect roof it s likely that it may not look as good as a brand new roof would. If your existing roof is fairly old there s a good chance the shingles are damaged.