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Are there a pros and cons to installing new shingles over the old layer of shingles?
The biggest drawback to installing new shingles over old ones is that it will most likely void your warranty. Another disadvantage to installing new shingles over old ones is that you deprive yourself of the opportunity to inspect your underlying roof--you may need to replace trusses, plywood sheeting and flashing. Old shingles can also hide mold. This could prove to be a time and money saving endeavour because you could potentially catch a small problem before it becomes a big one.
You may be able to add better insulation while you are at it, which will improve your energy costs.
*Two more negative points: 1)you are doubling the weight on the trusses or cut roof members. If you live in an area with high snow loads, you may overload the roof. 2) If you are sure that there is only 1 existing layer, you would probably be within the limits of any building code by adding another. However, some codes do not permit 3 layers due to a) the excess weight; and b) the difficulty in chopping through the roof by firefighters.
What else can I help you with?
When you install shingles over an old layer of shingles do you have to put down felt or do you put the new layer of shingles directly over the old layer?
With composition shingles, no felt is necessary between shingle layers. When the exposure of the shingles is the same as the old exposure, the bottom edge of the old shingles is used as a guide for the upper edge of the new shingles in placement. This ability to place the shingles would be lost if covered with felt.
Does it cost less to just add a layer of shingles?
If the roof is less than 24 years old,you can re -shingle over the old shingles. But if the roof is over 35 years old it is best to remove the exiting shingles ans replace with new
How do you add roll roofing under shingle roofing?
I am not sure if this question is worded correctly. 1) To add rolled roofing under shingles is not a recommended method of installation. What will work is to install a layer of Ice & Water Protection such as Grace Ice & Water Shield prior to the installation of your shingles. 2) If you meant to ask about installing rolled roofing over your shingles or installing shingles over your rolled roofing this is once again not recommended but is commonly done. You would first make sure the surface is level and remove all loose debris from existing roofing materials and or dirt, leaves, etc.. Just a quick clean up and sweep should be good. Then if the existing roofing materials are leaking I would recommend you either remove them and do this installation properly or at least install a layer of underlayment such as a heavy 30# felt paper or RoofTop Guard II over the existing materials. Then install the new materials following the manufacturers specifications. Once again this is not the recommended procedure and will void all manufacturers warranties.
Is there any shingles in the US?
Shingles is present all over the world.
Can architectural shingles be applied over old shingles?
yes you can place new shingles over old shingles as long as the first layer of shingles are not curled....you will need 1 1/4 - 1 1/2 roofing nails..and 2 courses is the limit...follow same procedure as first roof installation
How do I properly install ridge cap shingles on my roof?
To properly install ridge cap shingles on your roof, follow these steps: Start by measuring and cutting the ridge cap shingles to fit the length of the ridge of your roof. Apply a bead of roofing cement along the top edge of the ridge. Place the ridge cap shingles over the ridge, making sure they overlap each other and the roof surface. Nail the ridge cap shingles in place using roofing nails, ensuring they are securely fastened. Apply additional roofing cement over the nails and seams to seal and protect the ridge cap shingles. It is important to follow the manufacturer's instructions and safety guidelines when installing ridge cap shingles on your roof.
After having shingles can you get a perm?
I'd check with your doctor and hair dresser...
Can you install dimensional shingles over dimensional shingles?
Any time you layer on top of existing shingles you cut down the life span of the new roof. (Roof gets hotter and so the materials deteriorate faster.) So you may be able to do it (check local codes) but it isn't advisable. If you're looking to save, you may be able to do the tear-off yourself.
What roofing terms begin with the letter c?
cupping - improper installation of shingles over existing shingles
Are shingles needed when laying ice guard?
Specifically, No, shingles aren't needed. When laying Ice Guard, it should be installed over/or under the tar paper, and under where the shingles "will " be installed. You could wait for probably up to a month afterwords to install the shingles over top of the Ice Guard.
When was the most recent shingles outbreak?
The last Shingles outbreak spread all over Europe it was about 15 yrs ago
Can a person who had shingles in the past get shingles from another person?
No, they cannot. There are no separate strains to encounter. However, shingles have been known to recur over intervals of months to years, with no obvious stimulus.
