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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Boral Roof Replacement in San Jose: What to Know First
Boral roof replacement in San Jose typically runs $18,000 to $45,000 for a full tear-off and new tile installation on an average 2,000-square-foot home, and most jobs take 5 to 10 working days depending on roof pitch and decking condition. We are an independent Boral service provider, not a manufacturer-authorized dealer, which means we give you straight answers about your existing tile without any incentive to push one brand over another. If you’re a San Jose homeowner with a Boral clay or concrete tile roof that’s reached the end of its road, this page tells you what actually fails, what it costs, and how we handle the replacement. Call (669) 274-0078 for a written estimate before anything else happens.
Key Takeaways:
- Full Boral tile replacement in San Jose commonly lands between $18,000 and $45,000, with most homes falling in the $22,000 to $32,000 range.
- We write the price down before any work starts, and that number does not move unless we find hidden decking rot and you approve the change in writing.
- Boral tile roofs in San Jose fail most often from underlayment breakdown, not the tile itself. The tile usually outlives what’s under it.
- Every Boral replacement we do includes a written guarantee, and we stand behind it for a full year under our 365-Day Done Right Promise.
This page is for San Jose homeowners who already own a Boral roof and want it replaced correctly. If you’re weighing Boral against other brands for new construction or a first-time tile roof, we still cover that, but here the focus is on getting your existing Boral roof off cleanly and a durable new system on.
How Boral Products Fail – and How We Fix Them
Boral tile is tough. The tile itself routinely outlasts the underlayment beneath it by a decade or more, and that’s the root of most replacement calls we run in San Jose. Here are the failure patterns we see most on Boral roofs in this part of the South Bay, and what we do about each one.
- Boral CedarLite underlayment failure. CedarLite is Boral’s lightweight concrete shake line, and in San Jose we regularly see the underlayment beneath it degrade faster than the shake on top. The shake looks fine from the curb, but water has been finding its way underneath for years. On replacement, we strip to the deck, inspect every sheet of plywood or OSB, and only then lay the new underlayment system. The tile was never the weak point. What’s under it was.
- Boral VillaTile valley flashing leaks. VillaTile is a classic flat-profile concrete tile, and around older San Jose neighborhoods like Willow Glen and Cambrian, the valleys on these roofs were often flashed with metal that corrodes in our mix of coastal moisture and hot summer sun. The tile holds, but the valley leaks. Fix: full valley rebuild at replacement with new metal, proper overlap, and a two-layer underlayment in the valley itself. This is not a patch job.
- Boral Granite Ridge cracked tile from foot traffic. This is a concrete tile line with a textured surface, and we see hairline cracks on Granite Ridge from years of service techs, painters, or gutter crews walking where they shouldn’t. A cracked Boral tile lets rain hit the underlayment directly, and in San Jose’s occasional heavy winter storms, that’s when ceilings get water stains. On replacement, we walk ridge lines and battens only, never the tile field, and we replace any cracked tile we find instead of leaving it in place.
- Boral heavyweight tile on underbuilt decking. Some Boral lines, especially the full-weight clay tiles, are heavy. A few San Jose homes built in the 1970s and 1980s have decking that was never meant to carry that load for forty years. When we pull the old roof, we sometimes find decking that’s sagging between rafters. We sister and reinforce as needed before the new roof goes on, and everything gets inspected by the local building department. A new roof on a tired deck is a waste of your money.
- Boral flat tile in low-slope sections. Flat-profile Boral tile on a low-slope San Jose roof, especially on ranch-style homes in Berryessa or Blossom Valley, lets standing water sit longer after rain. That standing water works its way under the tile over time. At replacement, we check the actual slope, and if a section is too flat for tile, we discuss switching that section to a complementary roofing material rather than repeating the problem. We carry options from GAF, Owens Corning, and CertainTeed for exactly this situation.
Styles & brands we work with






Our Boral Roof Replacement Process
Every Boral replacement we run in San Jose follows the same path, and you’ll know each step before we start. Greg Holloway built Tilehurst around the habit of putting numbers in writing first, and that starts the moment we step onto your property.
- 1
Roof inspection and written estimate. We walk the roof, check tile condition, underlayment, flashing, decking where accessible, and gutters. You get a written line-item price before any work starts. You keep that price. It does not change unless we uncover hidden damage and you sign off on the additional scope.
- 2
Parts decision: OEM Boral tile versus quality aftermarket. If your Boral tile is still in production, we source OEM tile directly through our supplier network. If the line is discontinued, which happens with some older Boral colors, we match as close as possible with a quality aftermarket tile and tell you exactly what we’re using and why before we order it. You approve the tile before it arrives on site.
- 3
Tear-off and deck inspection. We strip the old roof, haul the debris, and inspect every sheet of decking. Rotted or delaminated sections get cut out and replaced with new plywood or OSB to code. You see photos of anything we replace. No surprises at the end.
- 4
Underlayment, flashing, and tile installation. New underlayment goes down first, including doubled underlayment in valleys and around penetrations. Drip edge and flashing are new. Tile gets laid from the eave up, with battens where the tile profile calls for it. Every step uses the manufacturer’s installation specs so your warranty stays intact.
- 5
Final walk and written guarantee. Greg or one of our senior techs walks the finished roof with you, points out what changed, and hands you the written guarantee covering the full year under our 365-Day Done Right Promise. If anything fails in that year, we come back at no charge. The guarantee is handed to you before the crew leaves, not mailed later.
See the difference
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AfterWhat Boral Roof Replacement Costs in San Jose
Here are honest ranges for the Boral jobs we price most often in San Jose. These are full replacement numbers, including tear-off, underlayment, flashing, tile, decking repair allowance, and clean-up. Every estimate is line-itemed so you see exactly where the money goes.
| Job | Typical Range |
|---|---|
| Boral concrete tile full replacement, 1,800 – 2,200 sq ft ranch | $20,000 – $32,000 |
| Boral clay tile full replacement, 1,800 – 2,200 sq ft | $28,000 – $45,000 |
| Boral CedarLite shake replacement, similar square footage | $24,000 – $38,000 |
| Decking replacement (per 4×8 sheet, if rot found) | $95 – $140 per sheet installed |
| Valley rebuild with new metal flashing (per valley) | $700 – $1,400 |
What moves the price: roof pitch, number of valleys and penetrations, whether the decking is shot, whether you have heavyweight clay versus concrete, and how much flashing detail your specific roofline has. The estimate we give you is the number we stand behind. Call (669) 274-0078 and we’ll put a real price in your hands before you commit to anything.
Why San Jose Homeowners Call Tilehurst Roofing San Jose for Boral Work
Most of our Boral customers reach us after someone else let them down. The old roofer didn’t show. Or the price changed at the door. Or the patch failed in one winter. That’s why we run every job The Kingswell Way: say the price before the work, show up in the window we gave, leave the property cleaner than we found it, put the guarantee in writing, and come back if it fails. A live person answers our phones 24 hours a day, seven days a week, including evenings and weekends. No voicemail when you call about a leak on a rainy night.
Our crews work on Boral tile week in and week out across San Jose, from Almaden to Evergreen to the older streets around the Rose Garden. When a Boral line is discontinued and we need a smart substitute, we have six other brands to pull from: GAF, CertainTeed, Owens Corning, IKO, Atlas, and Tamko. That means your replacement plan fits your home, not whatever happens to be in our truck. And every technician who steps onto your roof is background-checked and in uniform, so you know exactly who’s working up there.
FAQs
Replacing your roof does not void any remaining manufacturer coverage on the tile itself, but the new installation must follow Boral’s published installation specs for any new-tile warranty to apply. We install to those specs exactly, and we document the job so you have a clear record. Call (669) 274-0078 and we’ll walk through what’s still covered on your specific tile line.
Some Boral colors are no longer manufactured, and when that happens we source the closest available match from a quality aftermarket manufacturer and show you the tile before we order it. Color match on a discontinued Boral line is usually close but rarely exact across the whole roof. If that matters to you, tell us at the estimate and we’ll be straight about what’s achievable. Call (669) 274-0078 for a real answer, not a guess.
If your Boral tile is failing in one section but the underlayment everywhere is aging, replacement usually makes more financial sense than repeated repairs. Tile that looks fine often sits on underlayment that’s already past its service life, especially on San Jose homes that have gone twenty-plus years on the original paper. We’ll tell you honestly if a repair buys you time or just delays the inevitable. Estimates are free, and the number is in writing before anything starts.
A typical Boral full replacement in San Jose takes 5 to 10 working days from tear-off to final inspection, depending on roof size, pitch, and how much decking needs replacement. We schedule the crew in a specific window and we show up in that window. That’s part of the Kingswell Way, and it’s not negotiable. Call (669) 274-0078 and we’ll give you a real timeline with your written estimate.
The price on your written estimate is the price you pay, with one exception: if we find hidden decking rot or structural damage we could not see before tear-off, we stop, show you the damage with photos, and get your written approval before any additional work happens. No change orders appear out of nowhere. No “we found something” surprises at the end. Call (669) 274-0078 and we’ll put that in writing before a single tile moves.
Tell me what’s on your roof and I’ll tell you what it needs – straight answer, no guesswork.
Written by Greg Holloway, Owner, Tilehurst Roofing San Jose at Tilehurst Roofing San Jose, serving San Jose and nearby areas.