This contractor told me i don t need to tear off my existing shingles when we re do our roof.
Reshingle vs new roof.
What you need to know dave law last updated january 24 2020 here is a scenario we hear about all the time.
2nd layer of shingles.
You can t examine the decking to determine if there is any damage that needs repaired.
More difficult to check deck when you tear off the old roof you get a look at what s underneath.
In general it is not a good roofing practice to overlay a traditional asphalt shingle roof versus a complete tear off and replacement with a new roof for the very reason you stated.
If you want to reshingle your asphalt roof with new shingles it ll cost an average of about 7200 for a 2000 square foot house excluding old roof removal.
In this video this old house general contractor tom silva explains how to reshingle a roof steps.
Reroofing is the process of layering one set of new shingles over a set of existing shingles.
Pro tip for low sloped roofs photo by carl tremblay while asphalt shingle is a good roofing material it s not the best choice in all situations.
A bundle or two of new shingles stored flat in the garage comes in handy if your new roof gets damaged later.
Pry off old roof shingles with pitch fork.
By placing shingles on top of a damaged roof you ll affect the way the roof looks.
Your contractor can then use them for exact match patch repairs.
It can only be done once so if you already have two layers of roofing in place reroofing is not an option for you.
Staple felt every 6 to 8 inches.
In fact reports show that a new roof yields more than 80 of its original cost upon resale.
However when done right it also yields the biggest return on your investment.
Nail down loose roof sheathing to rafters.
Although it sounds like a good idea we can assure you the cons heavily outweigh the pros.
Roof tear off vs.
Whether you re going for a fiber cement composite shingle installation or a composite shingle asphalt roof the total expenditure can vary.
If you don t take your roof down to the sheathing you will never know if you have proper underlayment or are experiencing sheathing rot or ice or water damage.
In fact the only pro to a shingle over is it s cheaper and cleaner.
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.
Since it s being put on top of another less than perfect roof it s likely that it may not look as good as a brand new roof would.
Because there is no tear off reroofing can go much faster and be much less expensive than a complete roof replacement.
Cover roof deck with 30 pound felt underlayment.
