Walkway pad path leading across a white flat roof under a dramatic sky

Commercial flat roof replacement in Lewisville, TX

A commercial flat roof replacement takes everything off to the deck and rebuilds the assembly new.

Replacement estimate

Age, size, and the current system say where this begins.

When it is time

Commercial flat roof replacement in Lewisville, TX starts at the deck

Commercial flat roof replacement in Lewisville, TX becomes the answer when the insulation under the membrane is wet. Water in the insulation cannot be patched out, and anything laid over it is laid over a problem that keeps working, which is why a moisture survey decides this question and a walk-around cannot.

Once that finding is in, the shape of the job is simple even where the scale is not: strip to the deck, repair what is under there, and rebuild the assembly in order.

The trigger: wet insulation, or an assembly that has simply run out
The finding: a moisture survey, with core samples where the survey is ambiguous
The job: tear-off to the deck, repair, then rebuild layer by layer

Call (469) 240-5301 Get my free estimate

Close-up of an automated hot-air welder seaming white roof membrane

Scope

Tear-off, deck repair, insulation, membrane, terminations

Five stages, and the second one is the reason commercial estimates carry allowances.

01Tear-off: Everything above the deck removed and disposed of, which on a large roof is a logistics exercise as much as a roofing one.
02Deck repair: Corroded steel or spalled concrete gets repaired once it is visible. This is priced as an allowance because nobody can count it in advance.
03Insulation: Laid to the thickness the energy code in force requires, staggered and fastened to the specified pattern.
04Cover board and membrane: The cover board protects the insulation, and the membrane goes over it welded or torched by system.
05Terminations: Parapets, curbs, drains, scuppers and every penetration flashed. Most of the labor lives here.
06Drainage check: Water off the roof within a day and a half of rain stopping, which is what the drains and any tapered insulation exist to achieve.

All of it is the roofer's work, and the workmanship warranty on it is the roofer's to state in writing.

How it runs

A phased replacement keeps the building open

Phasing is the normal shape for an occupied building. Weather sets the pace. Where the insulation is still dry, a coating or a TPO recover is the cheaper route.

Step one

Survey, cores, and a phasing plan

Where the wet areas are, what the deck is, and which sections come off in which order around the tenants.

Step two

One section at a time, dried in daily

No area is left open overnight. That single constraint drives the schedule more than crew size does.

Step three

Deck repairs as they are found

Documented and photographed against the allowance, so the extra is evidenced.

Step four

Terminations, drainage test, walk-through

Details flashed, drainage checked after rain or a flood test, then a walk with whoever signs it off.

Good to know

Phasing, roof access, and what happens if it rains mid-job

The practical questions from anyone responsible for the building.

How is the work phased around tenants?

By section, agreed before anything starts. Which suites are underneath which section, what the noise hours are, and where the crew stages materials all get settled before the crew arrives, because renegotiating them on day three is expensive for everyone.

What happens if it rains mid-job?

Every section is dried in at the end of each working day, so rain finds a watertight roof rather than an open one. A roofer who cannot explain their dry-in plan has answered the question badly, and that answer is worth having before signing.

How do you get materials up there?

Crane, hoist or stairwell depending on the building, and it affects both cost and disruption. Access belongs in the bid, not in a surprise on day one.

Why is there a deck repair allowance?

Because nobody can count corroded deck under an intact roof. The allowance sets how many square feet are included and the rate beyond it, so the number moves in a way you can check instead of arriving as a change order.

How long does a commercial replacement take?

It runs from days to weeks by size, phasing and weather. The roofer sets the schedule and weather moves it, so this page gives no duration for your building.

Stone accented garage on a ranch home under a brown shingle roof

The next step

Building age, square footage and the current system

Three facts start a useful conversation, and a roofer can work with approximations for all three. If the current system is unknown, a core sample settles it during the survey.

Prefer to talk? Call now: (469) 240-5301

There is no obligation attached to asking what the roof needs.

Replacement inquiry

Give the size and the system, and a roofer works out the allowance.