How To Do A Roof Layover

Remove the ridge caps.

How to do a roof layover.

There are generally two options when installing a new roof. 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. Because of the extra weight caused by two layers of shingles only one overlay can be done on a roof. How to roof over existing shingles step 1.

The roof should be in sound. Tear off the old one and start from scratch or overlay a new roof one on top of the old one. Doing it now will make it easier to keep the job clean. There are pros and cons to both approaches.

Re roofing or layover is a process in which the second set of shingles is layered over an existing set of shingles on a roof without taking off the existing layer of old shingles on a roof. You will have a short row on the first course but if the existing roof was installed straight it should come out looking good. So even though an overlay might be good in the short term it s likely to cost you more money in the long run. Multiple layers of shingles can make it difficult or impossible for the nails to penetrate.

Use a c style drip edge and trim back the first two courses of the existing roof to get the roof started. Therefore if your roof already has two layers of shingles layered separately you cannot have a layover done on top of it. 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. Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the.

Use a roofing shovel. That means double the labor and debris just when you re taking the roof off. And when you do you won t just have one layer of roof to replace you ll have two. Knowing the costs and benefits can help you make this important decision.

Inspect the condition of your current roof. A roof can only have one layover done. The condition of the existing roof is critical. 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.

How to install a roof over an existing roof determine the feasibility.