Roof Flashing Repair in Hudson, WI
Hudson Roofing Pros repairs roof flashing on homes in Hudson, WI, resealing or replacing the metal where the roof meets a wall, chimney, skylight or vent pipe and in the valleys, so water stops getting in at those joints.
Available now · Open 24 hours
- Licensed
- Insured
- Since 2016
- Certified Technicians
- 10-Year Workmanship Warranty
- GAF Certified Contractor
What Is Roof Flashing and When Does It Need Repair?
Roof flashing is the metal, or sometimes membrane, that seals the joints where your roof meets a wall, chimney, skylight or vent pipe and where two slopes meet in a valley, and it needs repair when it lifts, rusts, cracks or its seal fails and water gets in behind it. Shingles cannot seal those joints on their own, so the flashing does the work.
Hudson weather is hard on flashing. Snow sits against walls and chimneys for weeks, ice dams push meltwater sideways along the roof, and summer wind can peel a loose piece up, so a joint that was tight when the roof went on can open up years later.
Flashing failures usually show up as a leak near a wall, chimney or vent, and our roof leak repair work traces the water back to confirm the flashing is the cause. Flashing repair is part of our wider roof repair service.
Where to look
At the joints
When a leak shows up near a wall, chimney, skylight or vent, check the flashing first.
Where Flashing Fails on Hudson Roofs
Flashing fails on Hudson roofs at chimneys, along walls and dormers, at vent pipes, in valleys and around skylights, wherever the roof is cut or meets another surface. Each spot uses its own kind of flashing and fails in its own way.
Chimneys
Step flashing and counter-flashing at the brick can rust or pull loose, and chimney flashing repair replaces both.
Walls and Dormers
Step flashing woven in with each course of shingles leaks when pieces slip, rust or were left out.
Where a Roof Meets a Front Wall
Headwall flashing along the top of a lower roof can lift or lose its seal under the siding.
Vent Pipes
The rubber boot around a plumbing vent cracks with age, letting water run down the pipe.
Valleys
Valleys carry water from two slopes, so worn metal or badly lapped valley lining leaks quickly.
Skylights
The flashing around a skylight can fail on its own, and a worn unit may need skylight replacement instead.
Seeing a stain near a wall, chimney or vent in your Hudson home?
Call us or send the form, and we'll check the flashing above it.
Should Your Hudson Roof Flashing Be Resealed or Replaced?
Hudson roof flashing can be resealed when the metal is sound and only the sealant or a few fasteners have failed, and should be replaced when the metal is rusted through, bent, cracked or was installed wrong. Caulk alone over flashing that was put in wrong only delays the next leak.
Reseal or refasten when
- The metal is solid with no rust holes
- Only the sealant has dried out or cracked
- A few nails have backed out
- The flashing was woven in correctly to begin with
Replace the flashing when
- The metal is rusted through or cracked
- Pieces are bent, missing or were never installed
- A vent boot is split
- The flashing is old tar or caulk patches instead of metal
When the roof itself is near the end of its life, we usually recommend replacing the flashing with the shingles as part of a roof replacement, so new flashing is not torn up again a few years later.
Not sure if your flashing needs resealing or replacing?
We'll look at it up close and tell you which it needs.
How We Repair Roof Flashing
We repair roof flashing by lifting the shingles around the joint, removing the failed pieces, checking the wood underneath, and weaving new flashing in with the shingles so each piece sheds water onto the one below.
- 1
Confirm the Leak
We check the attic and the roof to make sure the flashing, not a shingle or vent, is letting the water in.
- 2
Open the Joint
We lift the shingles and siding edge around the flashing without damaging the shingles we can reuse.
- 3
Check the Deck
Soft or rotted decking under the joint gets replaced before new flashing goes on.
- 4
Install New Flashing
New step, headwall or valley flashing goes in lapped with each course of shingles.
- 5
Seal and Clean Up
We re-lay the shingles, seal where the manufacturer calls for it, and leave the job site clean.
What Does Roof Flashing Repair Cost in Hudson?
Roof flashing repair costs $200 to $600 on a national range, not a quote, since no cost guide publishes a Hudson figure. A single vent boot or short run of step flashing sits at the low end; a whole valley or a joint with rotted decking costs more.
Flashing repair costs
national rangesYour price depends on the joint, the roof's pitch and what we find under the shingles.
Wisconsin Flashing Rules for Hudson Homes
Wisconsin's dwelling code requires flashing at every chimney-roof joint, in all valleys and around all roof openings, with chimneys flashed and counter-flashed at least 6 inches high. When we repair flashing, we bring the joint up to those rules.
Valleys have their own minimums. An open valley needs corrosion-resistant metal of at least 28 gauge and 16 inches wide, or 50-pound roll roofing 16 inches wide over felt underlayment; a closed, woven valley needs 50-pound roll roofing at least 20 inches wide over felt, or an ice-and-water membrane.
In the city of Hudson, flashing repair needs no building permit unless it includes structural changes or repairs. In the villages and towns around Hudson, we confirm the permit rules with your local building inspector before work starts.
Roof Flashing Repair FAQs
Can Flashing Be Repaired Without Replacing the Roof?
Yes, flashing can be repaired without replacing the roof. We lift the shingles around the joint, replace the flashing and lay the shingles back, as long as the roof around it is still sound.
Is Caulk Enough to Fix Leaking Flashing?
Caulk is enough only when the flashing itself is sound and the old sealant has simply worn out. Flashing that is rusted, bent, missing or lapped the wrong way needs to be replaced.
What Is Step Flashing?
Step flashing is a series of small bent metal pieces woven in with each course of shingles where a roof meets a wall or chimney. Each piece laps over the one below, so water runs down and out instead of behind the wall.
Do I Need a Permit for Flashing Repair in Hudson?
You do not need a building permit for flashing repair in the city of Hudson unless the work includes structural changes or repairs. Outside the city, we check the rules with your local building inspector.
Get a roof flashing repair estimate
Tell us where the leak shows up and what's above it, a wall, chimney, vent or skylight, and we'll check the flashing. Send the form or call us any time.
Call now (651) 691-2168 Open 24 hours, 7 days a week