Every roofers in area's estimate will have a total price, but you need to know how much each part of the roofing job will cost.

When estimating the cost of your roof, you should always use the "price per square footage" metric. For instance, the roofing contractor will repair 200 square feet of roofing at the cost of $25 per square foot, which will come to a total of $5,000.

It's possible that certain line items are "hidden." If they are not included in the estimate, you should discuss the following expenses with your roofers in area:

1. An Old Roof

In most cases, the elimination of it will incur a nominal cost.

2. Overlaying

Constructing a new roof over an existing one requires a process known as "overlaying." It is never suggested to place shingles on top of shingles for several different reasons. When the bottom layer of the shingles expands and contracts, it will drive the nails out from under the upper layer. If the customer persists, roofers will overlay the surface, although there may be an added cost per square foot for this service.

When individuals wish to save the expense of pulling off the old roof, doing so is not worth the immediate savings in the short run. The guarantee you had on the shingles will be voided if you overlay them, which might lead to more costly issues.

3. Underlayment

Between the decking and the exterior roofing material (like shingles), a secondary moisture barrier acts as a protective layer called the underlayment. Please refer to the following list for further information on the available choices and their respective prices.

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4. Decking

It is necessary to repair the boards that lie under the roofing covering if they have become brittle or rotting. Find out how much each board will cost to repair and the roofer's estimate of how many will need to be replaced. They can't tell for sure until the old roof is removed, but expert roofers in area may identify weak points by observing how the shingles are laid out.

5. Flashing and the pipe boots

Flashing is a metal seal that must be installed in particular places of your roof to prevent water infiltration. If the roofers in area tell you that he is not going to repair the flashing or pipe boots, you should be suspicious of his work since a high-quality job should include these upgrades.

6. Ridge vent

Again, roofers in area that intends to preserve your previous ventilation system should raise red flags for you.

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7. Gutters, soffits, etc.

Will it be required for you to replace the roofing in other places?