Roof Tear Off Or Second Layer

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.

Roof tear off or second layer.

It was once common to lay a new shingle roof over the preexisting layer at least once or sometimes even twice. Often homeowners must undergo a tear off versus adding a top layer of shingles if the current roof meets certain conditions. But you must take care to install shingles correctly so they lie flat. Re roofing from the bottom up or tearing off the current roof can be more costly and labor intensive than an overlay but it s often necessary and in some areas of the country required.

This old house general contractor tom silva prefers this route even when the roof is just a single layer so he can find the source of any water. The additional price is mostly related to the extra labor that goes into a tear off roof. Installation is easier than for a tear off job because you can use the existing shingles as guides for laying the new ones. 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.

Tear off or second layer. It s for this reason that many people choose to go with an overlay roof rather than a full tear off. A roof is one of the most vital components of a house. The case behind a tear off.

And a good job involves installing new flashings rather than relying on the existing ones. Over the top with shake faux architectural weaves over old valley cuts. When it s time to replace the roof again and you have no choice but to start anew two layers is the maximum allowed in most areas you ll have to pay extra for the two layer tearoff and disposal. Replacing a roof can be very expensive and exhausting at the same time.

Obviously during the tear off we spotted the leak and were able to change out the rotted wood and re flash the area. If you don t tear off the old layer you can t examine the decking. Even where layering is allowed applying a new layer of shingles over the old should be. In a shingle over if some of the decking has buckled and warped over the years it likely isn t going to be noticed and fixed.

More expensive a tear off roofing job is likely to run you as much as 1 000 more. Pros and cons of adding a second layer of shingles. This is no longer allowed in some jurisdictions where complete tear off of the previous roofing is now required. I have a 1949 1600 sf under roof with 8 12 pitches valleys and hips 2 6 rafters on 16 on center sheathed with 3 4 center matched lumber going over at least 1 layer of 3 tab shingles a partial tear took off the old tabs and left a nice wavy surface in pretty good shape.

You can t know for sure that there aren t any soft spots or.