Metal roofing
Architectural shingles
Tile roofing
GAF
Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Boral Gutter Replacement: The San Antonio Owner’s Guide
Boral gutter replacement in San Antonio typically runs $14 to $28 per linear foot installed, so a standard 150-linear-foot ranch home lands between $2,100 and $4,200 depending on profile, accessibility, and whether fascia board repair is needed. We carry Boral-compatible aluminum and galvalume profiles on our trucks for same-visit swaps, and we install them with the same written-price discipline we apply to every roofing job we take. Most San Antonio owners discover the problem after a spring hailstorm: water spilling over the lip, staining the fascia, or pooling at the foundation line because a seam finally let go.
Boral gutters are spec’d differently from the box-store standard, and the failure pattern matters. We’ll get into that below, along with what we stock, what it costs, and how to tell if you’re looking at a repair instead of a full replacement run.
Which Boral Models This Applies To
Boral’s gutter lines in the San Antonio market fall into two families: the traditional 5-inch K-style profile (sold under Boral’s aluminum and galvalume series) and the 6-inch half-round profile common on their higher-volume drainage systems. The K-style is the one we see on about 85% of the homes we reroof in the San Antonio area, especially in neighborhoods like Alamo Heights, Terrell Hills, and Stone Oak where original construction leaned on Boral’s roofing-and-drainage packages.
The compatibility gotcha most homeowners miss: Boral’s 5-inch K-style uses a 0.027-gauge aluminum wall, slightly thicker than the 0.024-gauge found on generic box-store gutter. That matters because thinner aftermarket hangers don’t bite as well, and aftermarket miters leave a seam profile that collects pine needles and oak tassels in a way the OEM profile doesn’t. If the gutter still carries its original factory label, look for the stamped gauge mark on the inside lip. No label? Measure the opening at the top. Boral’s 5-inch is a true 5 inches inside; the knockoffs often run 4-7/8. When we replace Boral, we use Boral-spec or equal-gauge profiles, never the thinner drop-in from a home center. We’re an independent service provider, not affiliated with Boral, which means we can also tell you plainly when an OEM part is worth the markup and when a quality equal-gauge aftermarket is the smarter spend.
Styles & brands we work with





Signs Your Boral Gutter Replacement Is Failing
- Seam separation at the miters. Boral’s mitered corners are factory-sealed with a butyl-based adhesive that eventually hardens in Texas sun. Once it cracks, water drips at the corner joints, and you’ll see dark staining running down the fascia board below the corners.
- Pulling away from the fascia. The aluminum hangers Boral specs are clipped every 2 feet. When the original installer skipped a clip or used a generic hanger with a shorter bite, the gutter sags outward within 8 to 10 years. Look for daylight between the back of the gutter and the fascia board.
- Overflow at the downspout drop. In San Antonio’s oak-heavy neighborhoods, Boral’s crimped downspout elbows catch acorns and leaf litter at the first bend. When the elbow clogs, water backs up and pours over the front lip even though the gutter is pitched correctly.
- Rust at the end caps. Boral’s galvalume line holds up well, but the end cap seams are the weak point. What starts as a hairline rust streak becomes a pinhole, and the pinhole becomes a drip line that eats at the soffit underneath.
- Visible pitch reversal. A Boral gutter that once drained at 1/4-inch per 10 feet can flatten out over decades of Texas heat cycling. When the pitch goes flat or negative, water ponds, mosquitos breed, and the weight of standing water accelerates every other failure on this list.
Replacement Cost & What’s Included
In San Antonio, budget $14 to $22 per linear foot for standard 5-inch Boral-spec K-style replacement, installed, with the lower end covering straight runs with good fascia access and the higher end reflecting multi-story homes, steep pitches, or runs requiring new downspouts. Half-round 6-inch runs $18 to $28 per linear foot. The range moves on three things: how much old hanger repair the fascia needs, whether we’re replacing downspouts or just gutters, and how much custom miter work the roofline demands.
Every Boral gutter replacement we install in San Antonio comes with a written line-item price before any work starts, so you’ll see the aluminum cost, the hanger count, the downspout length, and the labor separated on the page. The number on that page is the number on the invoice – no surprises at the door. The work itself carries our 365-Day Done Right Promise: if a covered gutter repair fails within a full year, we come back and make it right at no charge. That’s in writing, included with every job.
See the difference
Before
After
Before
After
Before
AfterDIY or Call Us?
Gutter replacement is not a high-tension spring repair or a steep-pitch roofing job, but it’s still ladder work at height, often with power tools and sharp aluminum edges in the mix. You can safely check a few things yourself: whether the gutter is pulling from the fascia, where the water’s spilling, and whether the downspout is clogged at the elbow. Those observations help you describe the problem accurately when you call.
What we’d caution against is the single-story DIY swap with a rented brake and a weekend’s time. Getting the miter angles wrong, using the thinner gauge, or setting the slope backward means the replacement fails faster than the one it replaced – and you’re out the material cost with nobody to call. If you want us to handle the whole thing, call (361) 209-8857 and we’ll get a written estimate going.
FAQs
Boral aluminum K-style gutters in San Antonio’s climate realistically last 18 to 25 years before seams start failing, with galvalume lasting a few years longer if the end caps stay sealed. The San Antonio heat cycles are relentless and they harden the factory butyl at the miters before the metal itself fails, so a re-seal at year 15 can sometimes buy you another five years. Call (361) 209-8857 for an honest assessment of whether replacement beats re-seal in your situation.
Yes, if the failure is isolated like one separated miter or a rusted end cap, a spot repair runs $85 to $175 and can extend the run a few seasons. But when the hangers are pulling loose or the pitch has flattened across the length of the gutter, spot repairs just move the problem. We’ll tell you which one you’ve got after we look at it, and the estimate is free.
A standard single-story San Antonio home with 150 to 200 linear feet of gutter takes a full day, including removing the old run, checking the fascia, and hanging the new Boral-spec profile. A two-story or a complicated roofline with multiple miters can run into a second day. We’ll tell you the timeline in writing before we start.
We keep Boral-spec 5-inch K-style aluminum, galvalume end caps, matching hangers, and downspout components on our installation trucks for the common San Antonio profiles, so many estimates turn into same-visit installations when the run is straightforward. For large full-home replacements or the 6-inch half-round, we order to spec and schedule the install within a few days. Call (361) 209-8857 and we’ll tell you exactly what we can do same-day vs what needs a return trip.
Call Crestview Roofing Co San Antonio for Boral Gutter Replacement
If your Boral gutters are pulling loose, leaking at the miters, or spilling over the front lip, call (361) 209-8857 for a free estimate. We’ll give you a written price before any work starts, a live arrival time you can track, and photo documentation before and after the job – the same way we handle every roofing and gutter job we take in San Antonio. Every promise we make goes in writing, because a handshake doesn’t keep water out.
Written by Dylan Pace, Owner, Crestview Roofing Co San Antonio at Crestview Roofing Co San Antonio, serving San Antonio and nearby areas.