Tile Roof Underlayment Replacement in Sacramento
Your tiles look fine, but the roof leaks. Before you pay for a tile roof underlayment replacement, here are your three options, what each really costs, and how we decide which one your roof needs.
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THE SHORT ANSWER
Why tile roofs leak when the tiles look fine
On most Sacramento-area tile roofs, the problem isn’t the tile. Tile sheds most of the rain, but the underlayment underneath is what keeps your house dry, and it usually wears out long before the tile does.
Water gets under the tile through gaps, mostly at the hips and ridges, and through weak spots like valleys, clogged drainage channels, broken tiles, where the roof meets a wall, and around chimneys, skylights and pipes. Over time that water rots the underlayment and the wood battens the tiles sit on.
Your three options
1. Roof tune-up
We seal and patch the places water gets in: valleys, where the roof meets a wall, drainage channels, chimneys, skylights, pipes, ridges and hips.
Usually about 30% of what a new roof would cost on the same house, with a warranty of 2 to 10 years, depending on the roof, that covers leaks in every area we fix.
2. Re-lay: new underlayment, old tiles
Tiles off, new underlayment, battens and flashings, and the old tiles back on.
At Roof Recovery, a full re-lay usually costs about the same as a new tile roof, and sometimes more. We only recommend it for a small section that doesn’t justify a new roof.
3. New tile roof
Everything comes off. We check the whole deck and replace any dry rot, then install new underlayment in one continuous run, not patched sections, with new battens, flashings and accessories.
The new tile is loaded evenly across the roof by conveyor and installed. It looks new, with no mismatched tiles.
Catch it early and a tune-up is often enough
The key is timing. Seal the weak spots early and you don’t have to redo the whole roof. Wait too long and water keeps getting in until the damage spreads and the whole roof has to be replaced.
A tune-up works on flat tile, villa (medium-profile) tile and S-tile (Spanish or high-profile). Keeping the drainage channels clear and replacing broken tiles instead of leaving them on the roof helps the underlayment last too.
Why a re-lay often costs as much as a new roof
- The labor is done twice. Every tile has to come off, be moved to the other side of the roof, and then go back on. That’s most of the cost.
- Old tile breaks. On an older roof, 10–20% of the tiles can break when they’re lifted, depending on their age. Each replacement tile adds about $30–40.
- Replacement tiles don’t match. Used tiles that fill the gaps rarely match, so the roof still looks old and patchy.
- No new tile warranty. A re-lay reuses your old tiles, so it doesn’t come with a new tile warranty. A new tile roof does.
- The tile itself is the cheap part. On a new roof, the tile is only about a tenth of the cost, so skipping new tile doesn’t save as much as people expect.
Once you count the broken tiles, a re-lay often ends up close to the price of a new roof, without the new look.
Tile roofs we usually recommend replacing
- Tile roofs over 30 years old with problems in many places. Patching one spot after another stops making sense.
- Lightweight tile on a metal grid (“Monarch roofs”). Many Sacramento homeowners call these “Monarch roofs.” They have metal bars running both ways instead of plywood, a cardboard-like radiant barrier, and every tile screwed down. We’re seeing them fail all over the region, and as far as we know, the original material can’t be found for repairs.
- Some older S-tile roofs. Many older Spanish-style roofs were built without the parts that stop wind-driven rain at the ridges and hips, so water runs under the whole roof. We decide these case by case: a lot of them only need a tune-up, but if water has been getting in for years, a new roof is usually the better buy.
What tile roof underlayment replacement costs
- New underlayment on a tile roof: about $32,000–$46,000 for most Sacramento-area homes.
- Brand-new tile roof: about $35,000–$45,000 on most 2,000–2,500 sq ft homes.
- Roof tune-up: usually about 30% of what a new roof would cost on the same house.
Figures from our 2027 roof cost guide. Get a ballpark for your house with the roof cost calculator, or see financing options.
How long a tile roof replacement takes
A typical tile roof replacement takes about 6 to 9 working days, longer than a shingle roof.
| Step | Time |
|---|---|
| Tear-off | 1–2 days |
| Dry rot repair, new underlayment, flashings, accessories and battens | 1–2 days |
| Tile loaded onto the roof by the supplier | Usually the next day |
| Tile install | 3–4 days, depending on the tile profile and the house |
Tile roofs we’ve worked on
Real photos from our jobs.
S-tile roof in Rocklin: water at the hip
The arrow shows where water got in at the hip and damaged the underlayment and battens. S-tile has big gaps, so water gets in and wears these parts down over time. Sealed early, the hips and ridges don’t get this far.
Lightweight tile on a metal grid (“Monarch roof”)
Lightweight tiles crack like this across the roof. With no plywood underneath and the original material hard to find, most owners replace these roofs.
Small-section re-lay: tile roof valley in Sacramento
The tiles were fine; the underlayment and battens under the valley were not. New underlayment, battens and valley metal, then the original tiles went back on.
How it works
Book an inspection
Appointments are usually available within a few days.
We inspect and photograph
We check the roof and show you photos of what we found.
Get a written quote
With repair and replacement options when both make sense.
We schedule the work
Usually 2–4 weeks out. Leaking now? Once you approve the repair, we tarp the roof for free until we’re back.
Common questions about tile roof underlayment replacement
Is it cheaper to replace just the underlayment on a tile roof?
Usually not by much. At Roof Recovery, a full re-lay costs about the same as a new tile roof, or more, because the labor is done twice and old tiles break when they’re lifted.
How long does tile roof underlayment last?
The tile makers don’t publish a lifespan for standard 30 lb felt, and most roofing sources put it at about 20 to 30 years, far less than the tile itself. In our experience, it can last the life of the roof if water isn’t constantly getting under the tiles. That means keeping the drainage channels clear, replacing broken tiles instead of leaving them on the roof, and sealing the gaps at the hips and ridges early.
Can you just fix the leaking part of my tile roof?
Often, yes. A roof tune-up seals the valleys, wall joints, drainage channels, chimneys, skylights, pipes, ridges and hips. It usually costs about 30% of a new roof and comes with a warranty of 2 to 10 years on the areas we fix.
What is a Monarch roof?
It’s what many Sacramento homeowners call a lightweight tile roof installed on a metal grid instead of plywood, with every tile screwed down. We’re seeing these fail across the region, and the original material is hard to find for repairs, so most owners replace them.
How long does a new tile roof take?
About 6 to 9 working days for a typical house.
Not sure which option your roof needs?
We’ll inspect your tile roof for free, show you photos of what we find, and tell you whether a tune-up, a re-lay or a new roof makes sense.