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Question DetailsAsked on 5/29/2013

how much would it cost to replace 3000 sq. ft of underlayment on a tile roof in az

Looking to purchase a home that is 25 years old and has roof tiles. I'm assuming that the underlayment will need to be replaced soon. The amount of this replacement would affect my offer for the house.

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2 Answers


Hopefully a tile roofing contractor will jump in here with a bit more experience, as I have only worked a few tile roofs.

I would see if you can get permission for a roofer to remove and replace a few tiles as an inspection - typically near the peak, to see what the existing underlayment condition is. It is undoubtedly 15 or 30# felt, which at 25 years would definitely be getting brittle and may be crumbling at this point.

Unfortunately, replacing the underlayment costs much less than the $8-15/SF an entirely new roof costs when working in tile, but is still expensive as it actually requires a lot more labor.

A remove and replace costs about $0.75-2.00/SF for underlayment and batten materials (Depending on whether using felt or synthetic underlayment), and about $1.50-3.00/SF for the R&R (now stop visualizing yourself sitting around watching the contractors work with a pina colada in your hands - R&R means Remove and Replace the tiles), depending on how common tile roofs are in your area and whether the contractor is licensed, insured, bonded, and using legal labor. This assumes very few tiles need replacement.

Therefore, rough numbers - $2.25-$5.00/SF. If you are planning on using an estimated replacement cost as a contingency or allowance in a purchase contract, you should get a firm committment (good for 6 months, say) from a contractor in advance.

Answered 7 years ago by LCD


3.85 a sq ft for higher than new built quality .Highest quality underlayment peel off backing I am having done on a 7000 Sq. Ft roof for $4.30 a sq. Ft. $30,000.00, I know this builders quality a number one job it will be. $27,000 for A qualitiY $30,000.00 for A++ Top of the line underlayment material. For $3,000.00 if I am going to have it all taken down and put back up,may as well go it A++ matererial for $.45 a Sq FT. difference.

Source: Got price today 4/5/2017

Answered 3 years ago by Pilot

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