Tile Roof Replacement

The tile is a rain shield, not the waterproofing

This is the single most useful thing to understand before you read a quote. Concrete tile sheds the bulk of the water and takes the weather, the impact and the sun. What actually stops water reaching your sheathing is the underlayment stapled to the deck underneath, and on a great many roofs in this area that layer is felt.

The two components have very different service lives. The tile can run for decades. The felt beneath it cannot, and it spends its life in an oven: trapped under concrete, in a Elk Grove summer, with attic temperatures well above the outside air. It gets brittle, it loses its flexibility around fasteners, and eventually it stops being a water barrier.

Which produces the situation homeowners find hardest to believe. A tile roof can look close to perfect from the street, with no visible damage at all, while the component doing the real work has finished.

Why this is arriving now across Elk Grove

The local housing numbers explain the timing. The median Elk Grove home was built around 2000, 37.4% of the stock went up between 2000 and 2009, and 86.1% of it is detached single-family. Tile was a standard choice on Sacramento Valley production housing through that period.

A roof built in 2003 with a felt underlayment is now past twenty years. That is exactly the window where original underlayment on a tile roof starts giving up, and because the houses went up together, the underlayment reaches that point together too. It is the same wave that drives shingle replacement across the city, arriving a little later and behind a covering that hides it.

What a lift and relay actually involves

1. The tile comes off and is stacked on the roof. Usually in bundles across the framing rather than carried down, because moving it twice costs money and breaks more of it.
2. The deck gets exposed and inspected. This is the first look anyone has had at your sheathing since the house was framed, and any rot found here is dealt with now.
3. New underlayment goes down. This is the actual product you are buying. It is worth knowing what is being installed and what its rating is, because the whole point of the job is that this layer outlives the last one.
4. Battens, flashings and penetrations are renewed. Valley metal, pipe penetrations and anything at a wall are replaced rather than reused. These fail early and are awkward to reach once tile is back down.
5. The same tile is relaid. Broken pieces are swapped for replacements, and the roof goes back to looking much as it did.

Weight is the constraint that catches people out

Tile is heavy, and that has consequences at permit stage. The City of Elk Grove treats roofing work over 100 square feet as permit work, and weight thresholds apply: roof coverings above 3-1/2 pounds per square foot and tile above 350 pounds per square bring structural questions with them.

In practice this rarely blocks a relay, because the structure already carries that tile and nothing is getting heavier. It matters when someone is going the other way, adding tile to a house framed for shingle. If that is the conversation you are having, it is a structural question before it is a roofing one.

When it is not a relay

A straight lift and relay assumes the tile is sound and the deck is mostly sound. Two things change that. Widespread breakage, where enough tile is cracked or spalling that you would be replacing a large share of it anyway, and a discontinued profile, where you cannot buy matching tile to make up the difference.

In that case you are into a genuine tile replacement, buying new covering as well as new underlayment, and the cost profile moves much closer to a full roof replacement. It is worth asking early which of the two you are actually looking at, because the difference is substantial and it is decided by the condition of the tile rather than by the age of the roof.