How To Do A Roof Layover

Since you do not tear off old roofing shingles a layover can be done much faster and it is supposed to be a cheaper alternative to complete.

How to do a roof layover.

Use a roofing shovel. There are pros and cons to both approaches. And when you do you won t just have one layer of roof to replace you ll have two. Tear off the old one and start from scratch or overlay a new roof one on top of the old one.

We don t do too many roof overs anymore. After that both layers of shingles must be removed and a new set of shingles placed on your roof decking. 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. How to install a roof over an existing roof determine the feasibility.

There are generally two options when installing a new roof. A roof overlay is done when the second set of shingles is placed on top of an existing layer of shingles on a roof. So even though an overlay might be good in the short term it s likely to cost you more money in the long run. If the shingle on there is a standard exposure 5 to the weather then you will want to find a shingle of the same dimension to do the roof over.

Because of the extra weight caused by two layers of shingles only one overlay can be done on a roof. Knowing the costs and benefits can help you make this important decision. How to roof over existing shingles step 1. A roof can only have one layover done.

You will have a short row on the first course but if the existing roof was installed straight it should come out looking good. Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the. Inspect the condition of your current roof. Remove the ridge caps.

The roof should be in sound. Multiple layers of shingles can make it difficult or impossible for the nails to penetrate. Therefore if your roof already has two layers of shingles layered separately you cannot have a layover done on top of it. That means double the labor and debris just when you re taking the roof off.

Use a c style drip edge and trim back the first two courses of the existing roof to get the roof started.