Can you lay new roof felt on old?

Many people ask if you can felt over old felt. We would advise stripping the roof so that you can inspect and repair the roof timber before then laying down a new layer of roofing felt.

Can I put 3 layers of shingles on my roof?

No, you can’t put three layers of asphalt shingles on a roof. In most states, you’re only allowed to have two layers of asphalt shingles on a roof for fire safety reasons. But that doesn’t mean you won’t still see roofs with three or four layers today.

How much does shingle roof cost?

On average, most homeowners pay between $8,000 and $9,000 to install new shingles, with low costs in the $5,000s and high costs pushing into the $12,000s and higher….Price of Roofing Shingles Per Square Foot.

Roof Area	Cost of Shingles
Roof Area	Cost of Shingles
750 square feet	$700 – $800
1,000 square feet	$910 – $1,100

Can you put roofing felt on top of existing felt?

It’s best to tear down to the bare roof deck so you can also check for any decking damage. But you can also add another layer of felt on top of existing. This will add additional thickness to the roof, so be sure that fasteners (nails) are long enough to penetrate both layers.

Can you put roof shingles over felt?

Shingles can be laid over existing roofing felt, but the surface must be both flat and in good condition to avoid imperfections in your finished roof. If in doubt, we recommend you strip it back to the oriented strand board (OSB).

How long does a third roof layer last?

The type of asphalt shingle roof will also influence how long your roof will last. 3-tab shingles typically last between 15 and 20 years. They are the cheapest asphalt shingle option.

How many times can a roof be re shingle?

Depending on the type of roof material used, the number of layers added to a roof range from two to three times. House roofs should never exceed three layers of shingles. Adding additional layers without excavation can save homeowners up to $1,000 in labor.