Roof Flashing Repair
Base flashing, counter flashing and pitch pockets fail long before the open field of the roof does. Often the most cost-effective fix on a building.
Learn moreCoping stone and cap replacement on New York, NY parapets
Coping is the cap on top of a parapet. When it cracks, loosens or loses its joints, rain goes straight into the top of the wall and down to the floors below.
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- Tile, stone and metal
- Flashed underneath
Quick answer: Coping replacement in New York, NY means removing cracked clay tile, loose stone or failed metal caps from a parapet, installing a through-wall flashing underneath, and resetting or replacing the coping with sloped tops and drips that shed water off the wall. Loose coping on a street-facing parapet is also a falling hazard.
What the job involves
What coping is supposed to do
Good coping sheds water off both sides of the wall. It slopes toward the roof, overhangs the wall faces, and has drip edges underneath so water falls clear instead of running down the brick. Under it, a flashing stops any water that gets through the joints.
A lot of old coping in the city was set in mortar with no flashing below. Once the joints open, every storm soaks the top of the wall. Resetting the pieces without adding flashing only restarts the clock.
Cost factors
What coping replacement costs depend on
Material
Clay tile, stone and metal differ in cost and labor.
Length of wall
Priced by the linear foot of parapet.
Flashing under the coping
Through-wall flashing adds material and time, and it is the point.
Masonry below
Top courses often need repointing or rebuilding first.
Access and protection
Street-facing work may need sidewalk protection.
Matching
Historic tile or stone takes longer to source.
Variations of the job
Coping work we do
Cracked clay tile coping
Glazed clay tile coping is common on older brick buildings and cracks as it ages. Broken pieces are replaced with matching tile where it is available, set over new flashing with sealed joints.
Metal coping caps
Sheet metal caps run over the top of the wall on cleats, with covered or sealed joints and a slope toward the roof. They suit parapets where tile or stone is not required.
Stone coping reset
Loose stone is lifted, the bed cleaned, a flashing installed, and the stones reset with new anchors and joints. Cracked stones are patched or replaced to match.
Do it yourself or call
Keeping an eye on coping, safely
Safe to do yourself
- Look along the coping from the roof hatch for gaps, cracks and missing pieces.
- Check top-floor walls for new stains after heavy rain.
- Photograph the coping each spring to compare year to year.
- Watch for pieces of tile or stone on the roof or the sidewalk.
Leave to a roofer
- Any work at the top of a parapet, which is work at the building edge.
- Lifting or resetting coping that could fall to the street.
- Caulking coping joints, which usually traps water rather than stopping it.
- Deciding whether loose coping is an unsafe condition that has to be reported.
Local conditions
Coping that is part of the facade
Street-facing parapets in New York City have needed an observation every year since 2024, and loose coping is one of the first things those observations flag. Around Mount Morris Park in Harlem, where more than 250 late 19th-century row houses sit inside a historic district, coping is also a visible part of the facade, so replacement pieces are chosen to match and the work may need Landmarks review.
What is included
What a coping job should include
- Removal of loose, cracked or failed coping
- Repair of the brick courses below
- Through-wall flashing under the coping
- End dams and drip edges on the flashing
- Coping sloped toward the roof
- Overhang and drips on both faces
- Anchors or cleats holding each piece
- Joints sealed or covered to suit the material
How it runs
How coping gets replaced
- 1
Remove the old coping
Pieces lifted and salvaged where they can be reused.
- 2
Repair the top of the wall
Loose brick relaid, joints repointed, surface leveled.
- 3
Install flashing
Through-wall flashing with end dams and drips.
- 4
Set the new coping
Sloped to the roof, anchored, joints sealed or covered.
- 5
Tie in the roof side
Counter flashing and roof membrane lapped correctly.
Questions we hear
Coping questions
Caulk over mortar joints is a short-term fix at best. Without flashing under the coping, water that gets past the joints still soaks the wall.
Both work when flashed and sloped properly. Metal is lighter and simpler; stone or clay tile may be needed to match the building, especially in historic districts.
On a street-facing wall it can be. A piece that falls from a roofline can injure someone below, which is why loose coping is treated as urgent.
In a historic district or on a landmark, work on visible features generally goes through the Landmarks Preservation Commission, and like-for-like replacement is the expectation.
Coping joints eventually open. The flashing underneath catches the water that gets through and sheds it out of the wall instead of down inside it.
Related services
Related roofing work
Chimney Flashing & Repair
Step flashing, counter flashing and crowns where brick meets roof, repaired so the chimney stops feeding water into the top floor.
Learn moreBulkhead Roofing & Repair
Stair and elevator bulkheads have their own roofs, walls and door sills, and each one leaks. We roof, flash and seal them as a unit.
Learn moreCoping loose or cracked?
Call and we will check it before the next storm or the next observation.