Chimney removal roof repair is the work that closes the hole once a chimney comes down: confirming the framing is solid, installing new decking, running underlayment into the surrounding roof and matching the shingles or tile. Done carefully, the old chimney spot disappears. Done hastily, it becomes the leakiest square yard on your house.

Why homeowners take chimneys down in the first place

Older brick chimneys, especially those built before modern seismic codes, often have little or no steel reinforcement. After an earthquake, or after a home inspection flags cracks, homeowners often decide to remove the chimney above the roofline, or all the way down, rather than rebuild it. Others no longer use a wood-burning fireplace and are tired of repairing crowns, caps and flashing year after year.

Chimney demolition itself is usually handled by a mason or general contractor. The roofing work starts when the masonry is gone and there's an open or temporarily covered hole in your roof. If you're at that stage now, book a roof diagnosis online so the opening is closed properly before the rainy season.

The steps in chimney removal roof repair

Each layer has to tie into what's already on the roof. Here's the sequence, from the structure up.

1. Check the framing around the opening

When the chimney was built, the rafters were cut and headers were installed to frame around it. Once the masonry is gone, those framing members need to be solid and dry. Old chimney leaks often rot the headers or the rafter ends next to the brick. Any structural framing work should be completed, and inspected if your city requires it, before roofing begins.

2. Install new decking

New plywood or OSB is cut to fill the opening and must be supported on all edges by framing or blocking. It should sit flush with the surrounding deck so the finished roof doesn't show a hump or dip. Damaged decking around the old chimney, which is common after years of slow leaks, is replaced at the same time.

3. Weave in new underlayment

This is the step that decides whether the patch leaks. New underlayment has to be lapped correctly with the existing layer: tucked under the old material uphill and over it downhill, so water always flows from one layer onto the next. We're "The No-Felt Company," so the new layer is a modern synthetic underlayment rather than felt.

Why a flat "patch" over the hole fails

If new underlayment is simply laid on top of the old roof and sealed at the edges, the uphill edge becomes a dam. Water runs under it, and sealant eventually cracks in the sun. A proper tie-in means lifting existing shingles or tiles well beyond the opening.

4. Restore the roofing and remove old flashing

All the chimney flashing, including step flashing, counterflashing and any cricket or saddle behind the chimney, comes off. Leftover flashing and old sealant are common sources of future leaks. The roofing material is then installed across the filled area and woven into the surrounding field.

Matching shingles and tile after a chimney comes out

A leak-tight repair that looks like a patch still bothers most homeowners, so matching is worth planning for. Before any work starts, ask to see a sample of the proposed material next to your existing roof, in daylight, from the street where you normally view the house. That simple check avoids most disappointment.

Composition shingles

Shingle colors fade over time, and product lines change. Even the same color name from the same maker can look different next to a ten-year-old roof. Pulling shingles from a less visible slope to use on the front, and putting new ones in the hidden spot, can help.

Clay and concrete tile

Tile can often be matched more closely, especially if you kept spare tiles from the original install. If not, salvage or close-profile tiles can work. The profile matters more than color for a watertight fit; color can sometimes be blended by moving existing tiles around.

Our repair and restoration team handles this kind of tie-in regularly. We start with our 4-Phase Roof Inspection so you know the condition of the roof around the opening, not just the hole itself, and our T.E.A.M. Certified technicians do the work. We've served Orange County since 1993 under St. Lic #1137524.

Timing and questions to settle before work starts

  • Who is doing what? Agree which contractor removes the chimney, who frames the opening and who roofs it, and in what order.
  • How will the hole be protected? If there's a gap between demolition and roofing, the opening needs a secure temporary cover.
  • Is this a good time to reroof? If your roof is near the end of its life, closing the chimney opening as part of a replacement avoids paying for a patch that's replaced soon after.
  • What about the fireplace below? If the chimney is removed only above the roof, the lower portion inside the attic or house must be capped and sealed by the appropriate trade.

If you're weighing other chimney-related problems instead of full removal, our article on a roof leak around the chimney covers flashing and crown fixes that keep the chimney in place.

Frequently asked questions

Can the chimney hole just be covered with plywood and shingles?

Plywood and shingles are part of it, but the framing, underlayment tie-in and removal of old flashing are what make it last. Skipping those steps is the usual reason chimney patches leak.

Will the patched area be visible?

It may be slightly visible on an older shingle roof because of fading. Careful material selection and blending make it much less noticeable, and tile roofs often blend very well.

Does a roofer remove the chimney too?

Masonry removal is typically done by a mason or general contractor. We focus on the roof: closing the opening, restoring the roofing and making sure it's watertight.

Planning a chimney removal or dealing with an opening that's already there? Call 1-888-346-7663 or book online. A technician will inspect the area, explain how the tie-in will be done and give you a clear scope before any work begins.