Put Shingles Over Old Roof

Installing a new roof over shingles takes less time than tearing off the old roof.

Put shingles over old roof.

Although it sounds like a good idea we can assure you the cons heavily outweigh the pros. 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. 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. Another reason is curling shingles as you can only install a new layer if the first one is completely flat and level.

Installing a new roof over an existing one can only be done if you have shingles because you can only put shingles over shingles. Install a layer of roofing felt over the roof before you begin installing the new shingles. Manufacturers will still. Step 3 cover the old shingles.

Damaged decking will need to be repaired before you can install any new shingles. Adding new roofing over old sometimes called a re roof is possible only with asphalt shingles also called composition shingles. Old shingles in north america were in inches. In fact the only pro to a shingle over is it s cheaper and cleaner.

Damaged shingles should be removed to check the decking for problems. Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface. But before we get started one thing must be clear. 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.

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. Hence we are mixing sizes and nothing fits perfectly. New shingles in canada are metric. We discuss the nesting method which helps minimize an uneven appear.

Looks just as good and lasts as long. It is not possible to mix materials nor to install a new layer over slate or wood tiles. 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. The felt should be secured every six inches with nails or staples.

Before you reshingle a roof read our step by step guide for adding new shingles over old ones. Should old shingles be removed before new installation. In this video we provide details on how to install roof shingles over existing shingles.