Phoenix, AZ · Tile Underlayment Replacement
Tile Roof Underlayment Replacement in Phoenix, AZ: The Fix That Starts Below the Tile
A tile roof can look perfect from the street and still be failing underneath. Tip Top Roofing Service is licensed (ROC #355034) and GAF-certified, and our Phoenix underlayment replacements are built around one idea: renew the waterproofing, keep the tile that is still good.
- Licensed & Insured - ROC #355034
- GAF-Certified Contractor
- 5.0★ Rating (130+ Reviews)
When does a Phoenix tile roof need new underlayment?
A Phoenix tile roof needs new underlayment when the layer beneath the tile is cracked, brittle or leaking, which is often found by lifting a few pieces rather than by looking at the surface. Tip Top Roofing Service checks that layer first and replaces it only when the evidence supports it.
- State contractor license entry, ROC 355034: azroc.my.site.com (confirmed November 2, 2026).
- GAF certified contractor listing: gaf.com (confirmed November 2, 2026).
- BBB page for the company: bbb.org (confirmed November 2, 2026).
- Industry installation guidance for concrete and clay tile treats the underlayment as "critical to the success of the roof system" (installation manual PDF, read November 2, 2026).
- InterNACHI's service-life chart puts concrete and clay tile at more than 100 years (nachi.org, read November 2, 2026).
- City of Phoenix over-the-counter reroof permit form, a public document describing the reroof permit process (phoenix.gov, Rev. 5/08, opened November 2, 2026).
Evidence We Look For Before Recommending Underlayment Work
The decision comes from what is found, not from the age of the roof alone.
Underlayment Condition
Cracking, dryness or crumbling when a tile is lifted is the clearest evidence.
Water Staining Pattern
Marks on the deck, in the attic or on ceilings show where the barrier has been bypassed.
Flashing Condition
Failed flashing can mimic a failed underlayment, so we separate the two.
Tile Condition
Sound tile can be reused, which changes both the cost and the scope of the job.
Decking Condition
Soft or stained sheathing means the problem has been active for some time.
Roof History
Earlier repairs and their locations help us find the pattern behind the leaks.
What a Phoenix Underlayment Replacement Looks Like
The steps below are the ones that apply on most roofs.
- A written free estimate lists tile handling, underlayment, flashing and decking as separate items.
- We confirm the permit requirements for your address and handle the permit steps on the job.
- Tile is lifted in sections, protected and staged, and the old underlayment comes off.
- Decking is checked and repaired where needed, then new underlayment and flashing go down.
- Tile is relaid, with broken or unsuitable pieces swapped for matching tile.
- The roof is cleared of debris, and we go over the result with you.
Underlayment Replacement Compared With the Other Options
Tile Repair
Right when the problem is a few damaged tiles or one flashing and the layer below is healthy.
Underlayment Replacement
Right when the layer below has aged out but the tile is serviceable.
Full Replacement
Considered when both the tile and the structure beneath it have reached the end of their useful life.
Where We Replace Tile Underlayment in Phoenix
We schedule this work throughout the standard Phoenix ZIP codes listed here.
85003 85004 85006 85007 85008 85009 85012 85013 85014 85015 85016 85017 85018 85019 85020 85021 85022 85023 85024 85026 85027 85028 85029 85031 85032 85033 85034 85035 85037 85040 85041 85042 85043 85044 85045 85048 85050 85051 85053 85054 85083 85085 85086
Verified November 2, 2026: WorldPostalCode and Hometown Locator both carry these 43 codes as regular Phoenix street-delivery ZIPs, and PO box ZIPs were dropped.
Phoenix Tile Underlayment Replacement Questions
What does underlayment do under tile?
It is the barrier that stops water from reaching the deck when it gets past or between the tile pieces.
Can I tell by looking if it needs replacing?
Usually not. The only reliable way is to lift tile at a few locations and look at the layer beneath.
Does the tile get thrown away?
Not if it is sound. We stack it, protect it and relay it, and replace only the pieces that are cracked or unsuitable.
How is this different from a tile repair?
A repair replaces specific damaged pieces. Underlayment replacement renews the waterproofing across all or part of the roof.
Do I need a permit in Phoenix?
Phoenix has a published reroof permit process. We confirm what applies to your project and manage the permit steps on jobs we do.
How long does the job take?
It depends on roof size, tile type and weather. We give you an expected schedule with the estimate, and tell you if anything changes.
What if the weather turns during the work?
Exposed areas are covered with temporary protection each day, and we plan the start date around the forecast.
Is the estimate free?
Yes. The written estimate is free, and it is separate from a paid roof inspection.
What does the estimate show?
Separate lines for tile handling, underlayment, flashing and decking, so you can compare it with another bid on the same terms.
What types of tile do you work on?
Concrete and clay, in the common profiles found on Phoenix homes. Unusual or discontinued tile is discussed before we quote.
Will the new layer match my tile system?
We follow the guidance for the tile type and the underlayment product. The installation manual we cite above stresses how important the layer is.
What happens to my solar or satellite equipment?
Roof-mounted equipment can interfere with the work. Tell us about it up front so the sequence can be planned with whoever installed it.
Can part of the roof be done first?
Often yes, provided each section is flashed into its neighbors. We would plan the order with you.
Do you replace the flashing too?
Failed flashing is replaced as part of the job, because new underlayment is only as good as the details around it.
What if the deck is damaged?
We photograph it, price the repair separately, and fix it before the new layer goes down.
Could my homeowners association be involved?
Some require approval for exterior work. We can provide a scope description and photos for your submission.
Is a tile roof with this work still original in appearance?
In most cases yes, since the existing tile is reused. The surface should look the way it did before.
Will you tell me if the roof is beyond saving?
Yes. If the tile or structure is worn out, we say so and explain why a full replacement is the better path.
Is your company licensed?
Yes, ROC #355034 with the Arizona Registrar of Contractors. The lookup link is in the sources above.
How do I start?
Call (480) 877-1643 or use the estimate button, and send photos of any stains and a note on the tile style.
Related Phoenix Roofing Pages
Roof replacement cost in Phoenix
Project example: tile reset and underlayment replacement
Tile roofing services overview
Last updated: November 2, 2026. By Lior Gabay, Tip Top Roofing Service, ROC #355034.
Want to Know What Is Under Your Tile?
We are reachable every day from 8 AM to 6 PM, with a 4 PM close on Fridays. Our estimate is free and written.