Reads the water content in decking, insulation, and drywall so we know how far a flashing leak has spread before we open anything up.
Roof Flashing Installation in San Marino, Texas
Roof Flashing Installation in San Marino, Texas is the fix when water shows up at your chimney, skylight, or valley instead of on the shingles. We tear out failed metal, set new step flashing and counter-flashing, seal every penetration, and hose-test the work before we leave.
Serving San Marino and nearby areas.
How big is the flashing job?
Multi-detail
A chimney plus a few penetrations, or a valley rebuild.
- 1. Single detail One pipe boot, vent collar, or small wall flashing joint.
- 2. Multi-detail A chimney plus a few penetrations, or a valley rebuild.
- 3. Full assembly Multiple chimneys, valleys, and penetrations planned in writing first.
Drag the needle to compareTouch and drag the needle
- 40Services from one local team
- 218Areas served around San Marino
- Camera firstWe inspect before we quote
- Hose testEvery joint tested before we leave
What Our Roof Flashing Installation Includes
Every flashing job is scoped to your roof, but these are the pieces we handle as standard.
Work order
Roof Flashing Installation- Full Flashing Inspection: We inspect every penetration, valley, and wall intersection with a moisture meter and infrared thermal imaging camera, and document each failed joint with photos before we quote the job.
- New Step And Counter-Flashing: We install new step flashing woven into the shingle courses and counter-flashing set into the mortar or siding, sized and fastened to manufacturer spec for your roof system.
- Pipe Boot And Collar Replacement: Cracked neoprene and silicone collars get replaced with new boots sized to the vent pipe. We stock common sizes on the truck so most collar replacements finish in one visit.
- Valley Metal And Underlayment: Where valleys have failed, we rebuild the metal and replace any torn or waterlogged underlayment beneath it, so the new flashing ties into a sound substrate.
- Sealant And Termination Work: We seal terminations with Henry Company and Sika products rated for the substrate, and use butyl tape at metal-to-metal joints. Sealant is a detail here, not the repair.
- Hose Test And Photo Report: Every job gets a hose test on the joints we touched, plus before-and-after photos and a written record of what was replaced, sent to you with the invoice.
What the first visit covers
First visit
We walk the roof, document each flashing joint, and show you what failed.
Flashing work at your home
Common home flashing calls we handle across San Marino.
Chimney leaks
New step and counter-flashing set into the mortar.
Pipe boot cracks
New collars sized to your plumbing vents.
Valley backups
New valley metal and underlayment, shingles re-woven.
Skylight drips
Curb flashing rebuilt and frame re-sealed.
Flashing work at your business
We work on flat and low-slope commercial roofs and schedule around your hours.
TPO and EPDM
Terminations and curbs re-flashed to spec.
Modified bitumen
Edge metal and drain details rebuilt.
Roof drains
Clogged drains cleared, flashing re-sealed.
What Roof Flashing Installation in San Marino, Texas Covers
Flashing is the cheapest part of the roof to fix and the most expensive to ignore. Water that gets past it soaks the decking, framing, and ceilings underneath. Fix the joint, not the stain.
Roof Flashing Installation in San Marino, Texas is the process of fitting the metal, membrane, and sealant assemblies that keep water out of the joints where roof planes meet walls, chimneys, skylights, vents, and valleys. Shingles shed water fine on an open slope. Flashing is what handles the spots where water wants to turn a corner and run sideways into your decking. We install step flashing, counter-flashing, valley metal, drip edge, and pipe boots, then tie each piece into the underlayment so water has one continuous path off the roof.
Most flashing failures we see around San Marino start small and get loud. A cracked pipe boot drips into the attic for months before a ceiling water stain shows up in the hallway. Chimney flashing leaks rust the chase and soak the framing behind the brick. If you have been typing roof flashing replacement near me San Marino Texas into your phone after a storm, that is usually the point where the old sealant has quit and the metal underneath has already started to corrode.
- What it is
- Metal and membrane that seals roof joints and penetrations.
- When it helps
- When water shows up at chimneys, valleys, or vents.
- What you get
- New flashing, a hose test, and photos of the work.
How Our Flashing Installation Process Runs
Five steps, start to finish. You get a written scope, a clear price, and a roof that passes a hose test before we pack up.
Tools And Methods We Use
Each method answers a different question. Together they leave very little to guess.
Shows temperature differences behind finished surfaces, which reveals wet framing and hidden water paths that a visual inspection misses.
Flies the chimney, valleys, and steep sections when walking them is unsafe, and captures photos of every flashing joint for your report.
Traces water entry points on flat and low-slope sections by sensing moisture through the membrane without cutting it open.
Applies controlled water to each repaired joint, starting low and working up, so we confirm the fix before we leave the roof.
When To Book Roof Flashing Installation
You found a water stain on the ceiling after a hard rain and the roof shingles look fine.
We inspect the flashing at every penetration and valley, use a moisture meter and thermal camera to confirm the source, and replace…
HomesYour chimney leaks during storms and the brick has white staining or rust streaks on it.
We tear out the old chimney flashing, install new step flashing and counter-flashing set into the mortar, and fit a new lead…
HomesYou are selling the house and the buyer's inspector flagged the flashing as a defect.
We inspect the flagged joints, document what is actually failed versus what is cosmetic, and install new flashing where it is needed…
HomesA hailstorm dented your chimney pan and cracked two pipe boots on the roof.
We document the hail damage with photos, replace the dented pan and cracked boots, and re-seal the terminations that the storm loosened.
HomesYour flat roof section leaks at the edge where it meets the wall.
We rebuild the termination with new flashing tied into the TPO or modified bitumen membrane, then coat the detail and the surrounding…
Businesses
How Flashing Work Runs In San Marino
San Marino sits in the San Antonio metro, which means your roof takes hail, wind uplift, and long stretches of UV-heavy sun. That combination kills flashing faster than rain alone.
Stone Oak
Mostly tile and architectural shingle roofs on two-story homes. Chimney and valley flashing are the common failure points after hail.
Monte Vista
Older homes with steep pitches and original chimney details. Counter-flashing set into aged mortar needs careful removal and re-seating.
Terrell Heights
Mid-century shingle roofs where pipe boots and vent collars are the most frequent flashing call we get.
- Stone Oak
- Monte Vista
- Terrell Heights
- Alamo Ranch
- Castle Hills
From problem to finished result.
Slide to compare the photo with an illustrative inspection view. It is generated from the photo, not a measurement.
PhotoChimney Re-Flash On A Stone Oak Home
Before: The homeowner had a rust streak down the chimney chase and a stain on the fireplace wall inside. Two previous repairs had smeared roof cement over the old flashing, which had corroded underneath and was letting water straight into the framing.
After: We removed the old metal, replaced the rotted sheathing, and installed new step flashing, counter-flashing set into the mortar, and a lead pan at the top. A hose test confirmed the fix. The interior stain stopped growing after the first rain.
Pipe Boot Replacement In Terrell Heights
Before: A ceiling stain kept reappearing in the hallway every time it rained. The pipe boot on the plumbing vent had cracked and was dripping directly onto the drywall below. The homeowner had patched it twice with sealant, which had already failed.
After: We replaced the cracked collar with a new silicone boot sized to the pipe, sealed the base to the underlayment, and hose-tested the penetration. The stain stopped growing, and we repaired and repainted the drywall inside.
Valley Rebuild On An Alamo Ranch Roof
Before: Water was backing up in a valley and running under the shingles into the attic. The valley metal had corroded and the underlayment beneath it was torn, so every hard rain sent water sideways into the decking instead of down to the gutter.
After: We stripped the valley, replaced the underlayment, installed new valley metal, and re-wove the shingles on both sides. The attic stayed dry through the next round of storms, and the repaired valley blends into the roof.
Flashing Problems We Fix Before They Spread
These are the calls we get most often in San Marino, and what happens if you let them ride.
Ceiling water stains that keep coming back
A recurring stain means water is still getting in. Each rain soaks more insulation and framing, and the repair bill grows every season you wait.
Attic water intrusion after hard rain
Wet insulation loses R-value, rusts the nails holding your sheathing, and can grow mold in a closed attic.
Chimney flashing leaks rusting the chase
Water behind the brick rusts the chase, rots the framing, and eventually shows up as a stain on the fireplace wall inside the house.
Cracked pipe boots and vent collars
A cracked boot drips a little every rain.
Why Homeowners Book Flashing Work First
Flashing is the cheapest square footage on the roof to fix and the most expensive to ignore. Here is what a proper install buys you.
Stops Repeat Leaks
A leak that comes back every hard rain is almost never the shingle field.
Protects Decking And Framing
Water that gets past flashing does not stay at the surface. It runs down rafters, soaks insulation, and rusts the nails holding your sheathing.
Matches Your Roof System
We install GAF, Owens Corning, CertainTeed, and Malarkey flashing components that match the shingle or tile already on your roof, so the repair does…
Handles Texas Weather
San Antonio hail and wind uplift punish flashing faster than sun does.
What Flashing Installation Costs
A single pipe boot replacement sits at the low end.
Included
Quoted after a first look
- Full Flashing Inspection
- New Step And Counter-Flashing
- Pipe Boot And Collar Replacement
- Valley Metal And Underlayment
What changes the scope
Quoted after a first look
- Material type
- Access and pitch
- Number of penetrations
- Decking condition
What you receive on the job
Clear records you can keep and share.
Inspection photos
Each failed joint documented before work starts.
Written scope
Materials and linear footage listed by name.
Test record
Hose test results on the joints we touched.
Flashing Experience You Can Check
We have worked on asphalt shingle, clay tile, concrete tile, standing seam metal, TPO, and EPDM roofs across the San Antonio area, and we install to…
Moisture readings
We read the meter at each suspect area to see how far water has spread.
Thermal images
The camera shows wet framing behind finished surfaces that a visual check misses.
Metal condition
We check for corrosion, dents, and lifted edges to decide replace versus re-seal.
Towns we serve.
Based in San Marino and covering the places around it. Pick one for local details.
What San Marino Homeowners Say
Water was coming down the chimney chase every time it rained hard. Two other guys smeared roof cement on it and called it fixed. This crew pulled the old flashing, showed me the rusted pan, and installed new step flashing and counter-flashing in one afternoon. Hose-tested it before they left. Three storms later, still dry.
We had a ceiling stain in the hallway that kept coming back. They traced it to a cracked pipe boot and a valley that had never been flashed right. Replaced both, re-wove the shingles, and sent photos of everything. The stain has not grown since. Fair price and they cleaned up the nails.
I manage four rental houses and flashing leaks were eating my maintenance budget. They re-flashed two chimneys and replaced six pipe boots across the properties in one week. Written pricing on each, photos on each, no surprise charges. I have them on the schedule for annual flashing checks now.
Frequently Asked Questions
Short answers for the first few minutes. The team can cover the rest.
Still have a question?
Describe what you are seeing and we will point you to the right next step.
2109395773A single pipe boot replacement is on the low end. A full chimney re-flash with new counter-flashing, step flashing, and a lead pan sits at the top. Material choice moves the number most: copper costs more than galvanized, and tile roofs take longer to weave flashing into than asphalt shingles.
Yes. We cover San Marino and the surrounding San Antonio neighborhoods, including Stone Oak, Alamo Ranch, Helotes, Castle Hills, and Terrell Heights. Call 210-939-5773 and we will schedule an inspection, usually within 48 hours. If water is actively coming in, tell the dispatcher and we will triage it as an emergency so a crew gets out faster.
A single pipe boot or vent flashing takes one to two hours. A chimney re-flash runs three to five hours. A full valley rebuild with new metal and underlayment can take a full day, especially on tile or standing seam metal. We give you a time window when we schedule, and we do not leave a roof open overnight. If weather turns, we tarp and come back.
We install galvanized steel, copper, and lead flashing, plus TPO membrane and modified bitumen on flat sections. Pipe boots come in neoprene or silicone collars sized to your vent pipe. We use butyl tape and roof cement at terminations and match the metal to your roof system, so a standing seam metal panel gets formed closures while an architectural shingle roof gets woven step flashing.
Related Services
Other services from the same team.
- Roof Vent Boot ReplacementWe stock common boot sizes on every truck, so most vent pipe collar replacements are done in a…
- Roof Pipe Collar ReplacementA split pipe collar lets water run straight down the pipe and into the attic.
- Roof Leak PreventionWe inspect the flashing, boots, and sealant joints annually and re-seal before they fail.
Get Your Roof Flashing Installation in San Marino, Texas
2109395773We show up, find the failed flashing, and fix it with materials that match your roof. Same-day estimates, written pricing, and a hose test before we leave.
Call for a roof leak inspection
Call 210-939-5773 and tell us where the water is showing up. We answer the phone during business hours and schedule most inspections within a day or two. If the leak is active, say so and we will move you to the front of the line.