SERVICE AREA / CHANDLER, AZ

Roofing in Chandler
is mostly about
what is under the tile.

Chandler went from cotton fields to a quarter of a million people in forty years, and most of that housing arrived with concrete tile. The tile has held up. The layer actually doing the waterproofing has not.

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A USEFUL FIRST QUESTION

“When was the underlayment last replaced — not the tile, the underlayment?”

01 / WHEN CHANDLER WAS BUILT

Cotton fields
to a quarter of
a million people.

Chandler incorporated in 1920 as an agricultural town built on cotton and ranching. Then Intel arrived, and the town did not stay agricultural.

Recorded figures for Chandler by census year
1950	3,799
1970	13,763
1990	90,533
2010	236,123
2020	275,987

Chandler holds roughly 113,000 housing units. The bulk went up between 1990 and 2010, which makes the typical Chandler roof between 16 and 36 years old.

That date range matters here because it overlaps and then runs past the commonly cited service life of tile underlayment in this climate.

02 / ACROSS THE CITY

Not every
part of Chandler
is the same age.

Downtown and the older core

The original townsite grid

Pre-boom housing, considerably older than the rest of the city. Shingle and low-slope, re-roofed repeatedly, and worth treating as an older house rather than a Chandler house.

The 1980s and 1990s tracts

North and west Chandler, the areas that filled first, mostly in the 1980s

Early boom tile, mostly from the 1980s and 1990s, now roughly 30 to 45 years old. This is the stock most likely to be past due on underlayment rather than approaching it.

South Chandler

The newer growth toward and beyond the Loop 202

Tile from the 2000s, around 21 years old. Approaching the same point rather than past it, which makes this the moment to look rather than to wait.

The Ocotillo area

The southern lakes communities

Later development, mostly from the 1990s and 2000s. More roof planes, more penetrations, and a proportion of low-slope sections that need their own treatment.

03 / WHAT THE ROOFS ARE MADE OF

What you
tend to find
in Chandler.

Concrete tile, overwhelmingly

The default across the boom housing that makes up most of the city. Sound, heavy, long-lived, and entirely dependent on the underlayment beneath it for keeping water out.

Shingle in the old core and on additions

Present on the pre-boom housing downtown and on later additions across the city. Where shingle sits next to tile on the same house, the junction between them is worth particular attention.

Low-slope on patios and larger homes

Patio covers, casitas and some of the larger southern homes carry low-slope sections. These are maintained on a recoating cycle and they fail differently and faster when they are neglected.

04 / WHAT SHOWS UP HERE

The patterns
worth knowing
about.

A roof that looks new and is not.

Concrete tile weathers extremely slowly. A Chandler homeowner looking at a roof that appears fine is usually right about the tile and wrong about the system underneath it.

Leaks that appear far from the cause.

Water entering through failed underlayment can travel along the deck before it finds a way in. The stain on the ceiling is evidence of where it arrived, not where it started.

Valleys and penetrations first.

On this tile stock the underlayment usually gives out at the valleys, around penetrations and at wall abutments well before it fails in the open field of the roof.

05 / WHAT CHANGES THE PRICE

Why two quotes
can differ by
thousands.

Re-lay or replace the tile

The single biggest line. If your tile is sound, re-laying it costs far less than buying new. Any proposal should state which it has priced, and a proposal that leaves it ambiguous is not comparable with one that does not.

How much of the roof is involved

Where underlayment has failed in one valley, a repair is honest. Where it is the same age and the same condition across the whole roof, a repair buys time and should be described as buying time rather than as a fix.

Breakage allowance

Lifting and re-laying tile breaks some of it. A realistic allowance stated up front is a sign of a proposal written by someone who has done the work; silence on it usually means a conversation later.

07 / CHANDLER QUESTIONS

Common ones.

My tile roof has never leaked. Why would I do anything?

Because the absence of a leak is not evidence that the waterproofing is intact. Underlayment fails gradually, and the first leak is typically the end of a long process rather than the start of one. Knowing where you are in that process is the point of looking.

Is replacing underlayment cheaper than a whole new roof?

It is a different scope rather than automatically a cheaper one, but it is usually less than buying all-new tile, because the tile is the expensive part and yours may well be reusable. The proposal should say explicitly whether it prices new tile or re-laying your existing tile.

How can I tell what year my roof went on?

The build year of the house is the starting point, and in Chandler that is often the same thing, because a great many roofs here are still on their first underlayment. If the house has changed hands, ask for any roofing paperwork the seller disclosed.

Does Intel or the commercial growth change anything for homeowners?

Not for your roof directly. It explains the timing of the housing, which is what matters here: Chandler filled in a compressed period, so a large number of roofs reach the same point at the same time.

I am selling. Should I deal with the roof first?

It depends what an inspection would find, and finding that out is cheap. A roof with known, documented condition is easier to sell around than one that raises a question at inspection and stalls the sale while it is answered.

What should a Chandler proposal actually list?

Whether tile is new or re-laid, what underlayment is specified and its rated life, what happens at valleys and penetrations, what the breakage allowance is, and what happens if the deck turns out to be damaged underneath.