Roof Cover Over Shingles

By placing metal roofing over shingles you can save in the labor costs of ripping them off while also preventing them from being thrown into landfills.

Roof cover over shingles. When contemplating a new roof many people hope to simply do a shingle over and avoid the extra cost and mess of tearing off the existing roof and starting from scratch. Metal roofs over shingles will also provide an extra layer covering your home helping to further insulate it. Damaged shingles should be removed to check the decking for problems. 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.

The second benefit is that it acts as a buffer between the metal roof and the shingle roof. If you are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems. Advantages of metal roofs over shingles. Over time a metal roof without a.

Why installing new shingles over old shingles can be good. Install a layer of roofing felt over the roof before you begin installing the new shingles. The felt should be secured every six inches with nails or staples. Things to know about metal over shingle roof problems.

Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface. After all you ll be making a significant and long term investment. Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros. To level out an existing asphalt shingle roof rip down reduce the height of two courses of shingles as shown in the drawing below.

When you should tear off your roof and start from scratch instead. Many arizona homeowners with shingle roofs do decide to roof over their existing shingles because. Before you reshingle a roof read our step by step guide for adding new shingles over old ones. Both metal and shingle roofs are great options for your next roofing project.

Leave the old valley flashing in place and install new over it. Let s start with the good. Because asphalt shingles are routinely exposed 5 in rip down the first strip the starter course so that it is 5 in. Although it sounds like a good idea we can assure you the cons heavily outweigh the pros.

It s clearly easier and cheaper to leave the old shingles in place but there s some special prep work involved with a re roof removing vents ridge caps and misshapen shingles among other things and you still have to replace or add new flashing which sometimes can be tricky over old roofing. The first is running new underlayment over an existing shingle roof thus covering the old roof. In fact the only pro to a shingle over is it s cheaper and cleaner. Disadvantages of metal roofs.

Damaged decking will need to be repaired before you can install any new shingles.