New Roof Or Second Layer Of Shingles

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.

New roof or second layer of shingles.

Re roofing may affect the warranty on the new shingles. Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface. The second layer is also more difficult to install properly compared to new shingles. Flashing around roof penetrations and sidewalls can be compromised.

In this video we provide details on how to install roof shingles over existing shingles. Adding this membrane isn t an option with a re roof and the extra layer of shingles offers little protection against ice dams. Re roofing used to be pretty straight forward with 3 tab shingles. 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.

Since the roofer is able to identify and repair high risk areas a new roof offers better quality than an old one. Pros and cons of adding a second layer of shingles. Before you reshingle a roof read our step by step guide for adding new shingles over old ones. We discuss the nesting method which helps minimize an uneven appear.

A roof is one of the most vital components of a house. Most people would limit this practice to a total of two layers of shingles. For a second layer to be as good as a roof tear off you would have to have sound decking no leaks and a roof with no sidewalls where flashing is needed in order to tie the tiles in to the exterior walls. How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h.

Posted july 31 2018 by onpage marie. A new roof fixes existing issues and traps less heat than multiple layers which can cause shingles to break and curl faster. Replacing a roof can be very expensive and exhausting at the same time. Select a length of roofing nails that penetrates completely through the new layer of shingles existing layer and the wood roof deck.

The standard practice was that you could install a new layer of singles directly over the old layer during a re roof. Be sure to check with the shingle manufacturer regarding all warranty issues and installation requirements before re roofing. Roofing second layer of shingles roofing.