Put Shingles Over Old Roof

Manufacturers will still.

Put shingles over old roof.

Hence we are mixing sizes and nothing fits perfectly. Installing a new roof over an existing one can only be done if you have shingles because you can only put shingles over shingles. In this video we provide details on how to install roof shingles over existing shingles. Another reason is curling shingles as you can only install a new layer if the first one is completely flat and level.

Step 3 cover the old 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. As long as it s done right and under the right conditions installing new shingles over old ones can last as long and look just as good as a complete re roof. Damaged decking will need to be repaired before you can install any new shingles.

Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface. Although it sounds like a good idea we can assure you the cons heavily outweigh the pros. Adding new roofing over old sometimes called a re roof is possible only with asphalt shingles also called composition shingles. The felt should be secured every six inches with nails or staples.

In fact the only pro to a shingle over is it s cheaper and cleaner. But before we get started one thing must be clear. Should old shingles be removed before new installation. Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros.

The trick is to never lay a shingle over the bump of an old shingle but always fill in the flat up to the next shingle and always glue down the shingles on the edge of the roof so that the wind will not catch. In this video i take show how to proper recover an old roof and make it look like it s a single layer check it out you might find useful tips for your new. Damaged shingles should be removed to check the decking for problems. You can t do it with wood or slate for example and you should never mix materials such as laying asphalt shingles over cedar shakes.

Before you reshingle a roof read our step by step guide for adding new shingles over old ones. New shingles in canada are metric. We discuss the nesting method which helps minimize an uneven appear. Has the same manufacturer s warranty.

Old shingles in north america were in inches. Install a layer of roofing felt over the roof before you begin installing the new shingles. Installing a new roof over shingles takes less time than tearing off the old roof.