For instance instead of just one roof on your home you now basically have two.
Shingling a shed roof over old shingles.
Damaged shingles should be removed to check the decking for problems.
Place the ridge cap shingles over the roof ridges.
If there is still some old paper stuck in place you can reuse it so long as it isn t rotting.
Handy home shows you universal shingling techniques that can be applied to any shed.
The felt should be secured every six inches with nails or staples.
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.
Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros.
Long term effects of shingling over shingles.
Roofing second layer of shingles roofing.
Place and nail the shingles from the bottom of the roof to the top.
Watch and see how easy it is.
If the job is done correctly with the new layer of shingles laid flat over the existing shingles the old roof cushions the new one and serves as a secondary barrier should wind or water ever break through the new shingles.
Begin shingling at the bottom edge of the roof starting at one end.
Ensure that each cap overlaps the one below it by 1 4 inch 7 cm.
All shingle manufacturers honor the warranty whether their products are used for a reroof or a new roof.
Step 3 cover the old shingles.
How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h.
Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface.
Planning and executing a good roofing job requires knowledge of every aspect of the job.
Nail each side of the cap shingle into the roof.
Before you reshingle a roof read our step by step guide for adding new shingles over old ones.
Using the correct size of roofing nail will ensure that your roof stays intact for many years to come and can help you avoid the common problem of roofing nails that extract themselves over time and cause you to lose shingles.
The cap of each shingle should fall evenly in half over each side of the ridge.
Step 3 layer the shingles.
Adding new roofing over old sometimes called a re roof is possible only with asphalt shingles also called composition shingles.
But before we get started one thing must be clear.
Damaged decking will need to be repaired before you can install any new shingles.
Apart from the problems going unnoticed during the actual shingle over there are long term effects to consider as well.
Install a layer of roofing felt over the roof before you begin installing the new shingles.