Residential · tile roofing
Tile Roof Underlayment Replacement in Phoenix
Tile roof underlayment replacement is the repair most Phoenix tile roofs actually need when they start leaking. The concrete or clay tile on top is fine; the waterproof underlayment beneath it has baked, dried out, and cracked. We lift the tile, replace the underlayment with material rated for Arizona heat, and reset your original tile, so the roof you see stays the roof you have.
Why underlayment fails long before the tile
Tile is armor, not waterproofing. The layer that actually keeps water out of your house is the underlayment beneath it, and under Phoenix tile that layer can see temperatures near 180 degrees on summer afternoons. Heat cycling like that dries out traditional felt in 15 to 25 years, and many Valley subdivisions were built with the lighter grades. The tile above it, meanwhile, is good for 50 years or more. That mismatch is why a roof that looks perfect from the street can leak in a monsoon.
What we install under your tile
Underlayment is a choice, and it is worth making deliberately. We walk you through the options against your roof and budget:
- Synthetic underlayment: tear-resistant, far more heat-tolerant than felt, the standard for most re-lays
- High-temperature SBS modified membranes: the premium option for valleys, low-slope sections, and roofs that run hot
- Upgraded flashing, valley metal, and penetration seals as part of the same job, formed in-house
- Double-layer or hybrid systems where the roof design calls for them
Lift and relay: keep your tile, replace what failed
Most contractors quote a full replacement because it is simpler for them. If your tile is sound, you should not have to buy it twice. Our crews lift and stack your existing tile, replace the underlayment and flashing, then relay the original tile with matching replacements for any broken pieces. It costs meaningfully less than full replacement, keeps the roof's original look, and HOA approval is rarely an issue because the visible roof does not change.
What the job looks like
A typical single-family underlayment replacement in the Valley runs three to five days. We work in sections, so the roof is never open overnight, and we photo-document the deck condition while the tile is up. If we find rotted battens or damaged decking, we show you the photos and price the fix before we touch it.
How it works
Underlayment Replacement: what to expect
- Step 1
Free inspection
We check the underlayment condition at the eaves, valleys, and penetrations, and tell you honestly whether it needs replacement or just repair.
- Step 2
Written estimate
A firm price in writing, with underlayment options laid out so you can choose.
- Step 3
Lift, replace, relay
Tile up in sections, new underlayment and flashing down, your tile reset with matched replacements for broken pieces.
- Step 4
Walkthrough
Photo documentation of what we found and what we installed, plus warranty paperwork.
FAQ
Underlayment Replacement FAQs
How long does tile roof underlayment last in Arizona?
Traditional felt underlayment typically lasts 15 to 25 years under Phoenix heat, and the lighter grades used in many subdivisions fail at the early end of that range. Modern synthetic and high-temperature membranes last significantly longer, which is why we install those.
How do I know it is the underlayment and not the tile?
Leaks with no visibly broken tile are the classic sign, especially after wind-driven monsoon rain. Other tells are debris granules in gutters, staining at the eaves, and a roof past its fifteenth year that has never had the underlayment touched. A free inspection settles it.
How long does underlayment replacement take?
Three to five days for most single-family homes, working in sections so the roof is protected the whole time. Larger or steeper roofs can run longer, and we give you the schedule in the written estimate.
Is this cheaper than a full tile roof replacement?
Substantially, when your tile is in good shape, because you are not paying for new tile. We reuse your existing roof and replace only broken pieces with matching stock. If enough tile is damaged that reuse stops making sense, we tell you that before you commit.
Can you walk on a tile roof without breaking tiles?
Our crews are trained to walk tile on the load-bearing parts of each piece, and some breakage is normal and expected during a lift and relay. That is why matched replacement tile is part of every job.
Related
Above the Standard
Free Underlayment Replacement Estimate
Tell us what the roof is doing and we will take a look. Licensed Arizona contractor, AZ ROC #161685, serving the Phoenix metro since 1999.