New Roof Or Second Layer Of Shingles

Re roofing used to be pretty straight forward with 3 tab shingles.

New roof or second layer of shingles.

Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros. Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface. We discuss the nesting method which helps minimize an uneven appear. Pros and cons of adding a second layer of shingles.

Select a length of roofing nails that penetrates completely through the new layer of shingles existing layer and the wood roof deck. How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h. Plus depending upon the size of your roof you ve added multiple tons of weight which could pose a big problem if there is significant snow accumulation. The standard practice was that you could install a new layer of singles directly over the old layer during a re roof.

Apply the shingles to all roof planes ending a row of shingles at the top of the plane which is the ridge or peak and cut to follow the profile of any outside corners. Posted july 31 2018 by onpage marie. If you have done some serious research on roofing then you have probably heard about adding a second layer of shingles on top of the old ones. If you don t tear off the old layer you can t examine the decking.

Most people would limit this practice to a total of two layers of shingles. A roof is one of the most vital components of a house. The second layer is also more difficult to install properly compared to new shingles. Roofing second layer of shingles roofing.

Replacing a roof can be very expensive and exhausting at the same time. Flashing around roof penetrations and sidewalls can be compromised. Adding this membrane isn t an option with a re roof and the extra layer of shingles offers little protection against ice dams. Be sure to check with the shingle manufacturer regarding all warranty issues and installation requirements before re roofing.

In this video we provide details on how to install roof shingles over existing shingles. Before you reshingle a roof read our step by step guide for adding new shingles over old ones. Re roofing may affect the warranty on the new shingles.