Roof repair: what to know

What the job involves, what changes the price, and what to ask a pro.

What roof repair is

Roof repair fixes a leak or a damaged section without replacing the whole roof. People call after a stain shows on a ceiling, a bucket is needed in the attic, or a storm has pulled shingles loose.

Signs you need it

  • Dark stains or soft spots on a ceiling below a roof valley, chimney or skylight after rain
  • Granules from the shingles collecting in the gutters or at the downspout outlets
  • Shingles that are curled, cracked or missing in one patch after a windstorm
  • Daylight or wet insulation visible in the attic near a vent pipe or chimney
  • Rusted, split or lifting flashing around a vent pipe, chimney base or wall step

What the pro does

  • Go into the attic with a flashlight and trace the wet area back to its source, since water often runs along a rafter before it shows on the ceiling
  • Lift the shingles around the leak and check the underlayment, decking and nail heads at that spot
  • Replace cracked or missing shingles so the new ones match the exposure and course, and reseal the tabs
  • Replace the pipe boot, step flashing or counterflashing where the water is getting past, and seal exposed nail heads
  • Check the decking and insulation nearby for rot or wetness that needs drying or replacement before the roof is closed up

What changes the price

Every job is different, so we do not publish prices. These are the things that move the quote up or down.

  • Roof area that has to be opened and how steep the pitch is
  • Roofing material, since tile, slate and wood shakes take longer to lift and reset than asphalt shingles
  • Whether the leak is a small flashing fault or a valley, chimney or skylight that needs a larger section rebuilt
  • Rotted decking or wet insulation that must be replaced once the roof is opened
  • Access, such as a steep roof, a second story that needs a lift, or tight space for ladders and staging
  • Whether the repair needs a permit or an inspection
  • Emergency timing when the repair is needed the same day after a storm

What a written quote should spell out

  • The leak location as found, with photos of the damaged shingles, flashing or decking
  • The shingle brand, color and profile used, and whether it matches the existing roof
  • Each flashing piece, pipe boot or vent named, with the material for each
  • Whether decking and insulation repairs are included, and the stated price for any extra work found after the roof is opened
  • Cleanup, a magnetic nail sweep of the yard and haul-away of removed shingles
  • The warranty on the workmanship and whether the shingle manufacturer warranty still applies

Questions to ask before you hire

  • Will you find the leak source in the attic before you quote, and do you run a water test if the cause is not clear?
  • Which shingle line and color are you matching, and can you show a photo of a patch done on a roof like mine?
  • Will you replace the flashing and pipe boots at the same time, or only the shingles above the leak?
  • What will you do if rotted decking shows up after the shingles come off?
  • Who will be on my roof, and how are the ladders and the crew secured while they work?
  • Can you send a current insurance certificate that covers roof work at this height?
  • Will the repair leave the gutters and the fascia board under the leak in good condition, or will you note any damage?

Red flags

  • Roof cement troweled over the leak area as the whole fix, with no look at the flashing, the underlayment or the attic
  • A roof inspection done only from the ground that ends in a full replacement recommendation with no photos
  • Shingles nailed high or in the wrong places, or a patch with no sealant under the tabs
  • No written description of what will be replaced and how the flashing will be handled
  • No proof of insurance and no way to confirm who will be on the roof

What you can do yourself

You can safely check the attic with a flashlight on a dry day, look for stains and daylight, and place a bucket under a drip to protect the room below. Stay off the roof, since that is work at height, and do not climb onto a wet or steep roof. Call a pro once you can see the leak source, sagging decking, damaged flashing, or water reaching a ceiling light or wiring.

Licenses and permits

Roof repair is commonly done by a licensed roofing contractor, and some roof repairs need a permit, especially structural or decking work. Check with your state and local licensing and building offices before work starts.

Roof repair questions

Can a small roof leak be fixed without replacing the roof?

Often, yes. A pro can replace the shingles, flashing or pipe boot that failed. A full roof is usually needed only when the surface is worn across a large area or the decking is damaged.

How do I find where a roof leak is coming from?

Start in the attic under the wet area and trace the water uphill. Pros often check the flashing around chimneys, vents and valleys first, because those joints are where water gets past shingles most easily.

Should I repair the leak right away or wait for better weather?

Repair it soon. Water held in insulation or decking can cause rot and mold. A temporary fix from a pro is better than waiting for the next rain.

Will the repair match the rest of my roof?

Only if the shingle line is still made and the color is close. A pro should check the shingle markings and show you a sample. Weathered shingles often do not match exactly.

About this guide

This national guide is written and checked by infinibell. Rules and conditions differ by place, so local pros are credited on guides for the cities they serve, not on national ones.

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