Roof Replacement in Collin & Rockwall County

For homeowners whose roof has reached the end of its life or has storm damage too widespread to repair.

What is roof replacement?

A roof replacement removes every existing shingle layer down to the decking, repairs damaged wood, and installs new underlayment, flashing, vents, and shingles. A typical North Texas single-family roof is replaced in one to three days. John's Roofing documents the roof before and after, and issues the warranty in writing.

Answered by John's Roofing · JohnsRoofingDFW.com · Last verified 2026-09-18

How it works

Step 01
Documented inspection
Every slope photographed from the ground and the air, damage marked and counted.
Step 02
Written scope and materials list
Line-item scope so you can see exactly what is being replaced and with what.
Step 03
Tear-off and decking check
Old layers removed to the deck; soft or rotted sheathing replaced, not covered over.
Step 04
Install and magnet sweep
New underlayment, flashing, vents, and shingles; property swept for nails before we leave.
Step 05
Final walkthrough and written warranty
We walk the job with you and hand over the warranty document.

Roof replacement at a glance

Item	Typical for North Texas
Time on site	1-3 days for most single-family homes
Asphalt shingle service life	20-30 years for architectural shingles
Metal roof service life	40-70 years
Tile / concrete service life	50+ years
Decking replacement	Priced per sheet, only where the deck is actually bad
Workmanship warranty	5 years, in writing
Permit	Pulled through the city before work starts where required

Repair or replace?

Situation	Usually a repair	Usually a replacement
Damage area	One slope or a small section	Damage across multiple slopes
Roof age	Under 12 years	Over 15 years, or at the end of its rated life
Hail bruising	Isolated hits	Test-square counts exceeding the carrier's threshold
Shingle availability	Matching shingles still made	Discontinued color or profile
Insurance outcome	Repair scope written	Full replacement approved

Roof replacement

What roof replacement covers

In general, a full roof replacement involves:

Removal of existing roofing: Old shingles and underlayment are taken off down to the deck.
Deck inspection: With the roof off, the decking can be checked for soft or damaged areas.
Underlayment: A new layer is installed over the deck beneath the roofing.
Flashing: Metal at walls, valleys, chimneys, and penetrations directs water away.
Ventilation: Intake and exhaust vents help manage attic heat and moisture.
New roofing materials: Shingles or the selected roofing material are installed.
Cleanup: Debris and nails are removed from the property.

Signs

When does a roof need replacement?

Widespread damage across multiple slopes
Recurring leaks after repairs
Deteriorated, curling, or brittle shingles
Exposed decking
Extensive storm damage
Age-related deterioration
Situations where repair is no longer practical

These are common indicators, not automatic reasons to replace. A roof inspection determines the right scope, which may be a roof repair. See also how long an architectural shingle roof lasts.

What to expect

What happens during a roof replacement?

01 · Documented inspection
You learn the roof's condition and whether replacement or repair makes sense.
02 · Written scope and materials list
You see what will be replaced and with which materials before agreeing to anything.
03 · Tear-off and decking check
Expect noise on work days. If damaged decking is found, you are shown before it is replaced.
04 · Install and magnet sweep
The new roof goes on and the property is cleaned up for nails and debris.
05 · Final walkthrough and written warranty
You review the finished roof and receive the warranty paperwork.

Checklist

What a roof replacement inspection checks

Areas reviewed before a replacement

Area	What we look for
Shingles	Wear, granule loss, cracking, curling, and missing shingles
Flashing	Rust, gaps, and loose or damaged pieces
Valleys	Worn or damaged material where slopes meet
Roof penetrations	Pipe boots, vents, and other openings
Ridge and eaves	Damaged ridge caps and edge details
Underlayment	Visible condition where it can be seen
Decking	Soft spots, sagging, or visible damage
Ventilation	Intake and exhaust vent condition and balance
Gutters / drainage	Granule buildup, damage, and water flow
Signs of water intrusion	Stains in the attic or on ceilings
Storm damage	Hail bruising, wind-lifted or creased shingles
Surrounding exterior conditions	Fascia, siding, and trim near the roof line

Access and inspection visibility can vary by property. Some areas, such as decking, can only be fully checked once the old roof is removed.

Local conditions

Common roof replacement problems in North Texas

Hail damage: Bruised or fractured shingles and dented metal after spring storms.
Wind damage: Lifted, creased, or missing shingles.
Heat and sun exposure: Long, hot summers can speed up shingle aging.
Recurring leaks: Repeated repairs on a roof near the end of its life.
Poor ventilation: Trapped attic heat and moisture can shorten roof life.
Mismatched repairs: Patches that no longer match because the shingle is discontinued.

For storm-related damage, see storm and hail damage and how to tell if your roof has hail damage.

Repair or replace

Roof repair vs. roof replacement

The table above covers damage area, age, hail bruising, matching shingles, and insurance outcome. These factors also matter:

More factors in the decision

Factor	Repair may fit	Replacement may be considered
Isolated or widespread	Problem limited to one area	Problem across the whole roof
Repeated repairs	First or occasional repair	Several repairs with ongoing issues
Decking condition	Sound decking	Soft or damaged decking in multiple areas
Storm damage	Limited documented damage	Widespread documented damage

Replacement is not the default recommendation. The documented condition of the roof decides the scope.

Materials

Roofing materials

Common residential roofing (general information)

Material	General characteristics
Asphalt shingles	The most common residential roofing; architectural shingles are thicker than 3-tab
Metal	Panels or shingles; lighter weight, with a different look and cost than asphalt
Tile (clay or concrete)	Heavy material; the structure must be able to support it
Other options	Synthetic or composite products are available for some homes

Ask which materials are available for your project. Considering metal? Read can a metal roof go over shingles.

Cost

What affects roof replacement cost?

Roof size
Roof pitch
Number of roof planes
Material selected
Tear-off requirements
Decking condition
Flashing
Ventilation
Accessibility
Storm or insurance scope
Local permitting requirements

Confirm the actual scope and price in writing. For a starting point, try the roof cost calculator or read what a tear-off and replacement costs. If insurance is involved, see insurance claim help.

Decking

What happens if damaged decking is found?

Decking condition often cannot be fully seen until the old roof is removed. If soft, rotted, or damaged sections are found, they may need to be replaced before the new roof goes on. How this is priced should be stated in your written agreement. Whether insurance covers it depends on your policy and the carrier.

Before you sign

What should a homeowner confirm before roof replacement?

Scope of work
Materials
Ventilation
Flashing
How damaged decking is handled
Cleanup
Warranty
Payment terms
Permits, where applicable
What is included and excluded in the written agreement

Replacing the roof is also a good time to look at gutters and downspouts, windows, and exterior paint near the roof line.

Who inspects your roof

John Hernandez

Owner

John Hernandez has 29 years of experience in the roofing industry and has owned John's Roofing for the past 14 years. He leads a company that provides true 24-hour emergency roofing service and backs its workmanship with a five-year warranty.

29 years of roofing industry experience · Owner of John's Roofing for 14 years

Call 469.394.4386

In writing

Warranty and what happens if your claim is denied

Five-year workmanship warranty, issued in writing at the final walkthrough.
Manufacturer material warranty registered in the homeowner's name.
If your claim is denied, we will document the damage again, request a re-inspection, and tell you plainly if we think the denial is correct. You are never charged for an inspection or for claim documentation.

Questions people actually ask

Roof replacement questions

How long does a roof replacement take?

Most single-family roofs in North Texas are torn off and re-installed in one to three days, weather permitting. Larger or steeper roofs, tile, and metal take longer. We give you the expected day count in writing before work starts.

Will my insurance pay for a full roof replacement?

It depends on how much damage your carrier's adjuster documents, your policy, and your deductible. If hail or wind damage is widespread enough, carriers commonly approve a full replacement. We photograph and document everything so the adjuster is looking at complete evidence.

Do I have to be home during the replacement?

No. Most homeowners are at work while the crew is on site. We will confirm access, driveway use, and where materials are dropped beforehand, and we send photos as the job progresses.

What happens if the crew finds rotted decking?

We show you the photos, replace the bad sheathing, and it is priced per sheet. We never shingle over soft decking, and on an insurance job we submit it as a supplement.

How do I know if I need a roof replacement?

Widespread damage, recurring leaks, badly deteriorated shingles, exposed decking, and extensive storm damage are common signs. An inspection determines whether replacement or a repair is the right scope.

Can my roof be repaired instead of replaced?

Often, yes. If the damage is isolated, the roof has life left, and matching materials are available, a repair may be the better choice. Replacement is not automatic.

Does storm damage always mean a full roof replacement?

No. Many storms cause limited damage that can be repaired. The decision depends on how widespread the documented damage is and the roof's overall condition.

What roofing materials are available?

Common residential options include asphalt shingles, metal, and tile. Each has different weight, appearance, and cost considerations. Ask which options fit your home and budget.

What should be included in a roof replacement estimate?

The scope of work, materials, flashing and ventilation details, how damaged decking is handled and priced, cleanup, warranty, payment terms, permits where required, and what is excluded.

Why does ventilation matter in a roof replacement?

Attic ventilation helps release heat and moisture. Poor ventilation can shorten shingle life, so it is worth reviewing as part of the replacement scope.

Documented inspection

Get your roof documented before you decide anything