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Experienced Roofing Contractor in Thornton, CO

Thornton publishes exactly what a roof has to pass. Apex Roofing works to that document and shows you the roof before it quotes.

  • GAF Certified Roofing Contractor
  • 5-Year Labor Warranty on New Roofs
  • Townhome, Condo and HOA Experience
  • Serving Colorado Since 2010

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Trusted Roofing Company Serving Thornton and the North Metro

The Roof Problems Thornton’s Standards Are Written to Catch

Most Thornton roofs fail at the details, not in the field. That is why the city’s Roofing Standards spend more words on drip edge, valley flashing, underlayment and nail patterns than on shingles. North metro hail does the visible damage, but what decides whether a repair holds is whether the edges, the flashings and the fastening were done to the standard the inspector checks. When hail is the cause, storm and hail damage roof repair covers how that gets documented.

  • Storm Impact

    Hail Bruising Across One or More Slopes

    Hail fractures the shingle mat and strips granules without breaking through, so the roof sheds water for another season and then fails early. It rarely stops at the shingles. The same storm dents and splits gutters and downspouts, and bent hangers pull a run out of pitch so water sheets off the fascia instead of draining. Which slopes took the hit matters more in Thornton than most places, because of how the city treats partial repairs.

  • Edge Failure

    Wind Lifting at the Rake and Eave

    The rake and the eave are where wind gets a purchase, and they are exactly where the city requires drip edge flashing extending over the sheathing at the fascia. A roof missing that detail, or carrying edge metal that was reused rather than replaced, is a roof that will lift again in the next front. It is also one of the first things the inspector looks for in the mid-roof photographs, so it cannot be quietly skipped.

  • Install Quality

    What the City’s Photos Are Looking For

    Thornton’s mid-roof photo requirements include the nail pattern, six nails per shingle, precisely because it is invisible after the fact and it is what fails under wind uplift. The photos also have to show the underlayment marking, ASTM D226, D1970, D4869 or D675, which means the underlayment on a Thornton roof is not a detail anyone gets to be vague about. High nailing, short nailing and underdriven fasteners all pass a glance from the driveway and none of them pass a proper inspection.

  • Commercial Scope

    Flat and Low-Slope Sections on Commercial Buildings

    Low-slope roofs fail through ponding, seam separation and failed penetration details rather than lifted shingles, so a walk-around from ground level tells you almost nothing. They also carry a different permit path in Thornton, including a plan review, which means the timeline on a commercial reroof starts earlier than owners expect. Getting the scope and the drawings right before the application is what keeps that project from stalling at the counter.

Every Roofing and Gutter Service Available to Thornton Properties

Whether it is a single leak, a hail-damaged slope, or a covering at the end of its life, Apex Roofing handles the full range of roofing and gutter work for Thornton properties on asphalt shingle, metal, tile and low-slope systems, for single-family homes, attached housing, and commercial buildings, including storm damage inspections and insurance claim guidance. That is the whole list, and it is the only place on this page it appears in full.

Roof Replacement and Repair for Thornton Homes

Commercial Roofer Services for Thornton Businesses

Homeowners on Working With Apex Roofing

These reviews come from Apex Roofing’s Google profile. Two of the three describe a hail claim handled directly with the insurer, which is the part of a north metro reroof that goes wrong most often.

Verified Google Reviews
  • Google Verified
    Bruce Burrage
    My wife and I recently worked with Apex Roofing to replace our roof, downspouts and a few windows that were damaged during a hail storm/tornado. Robert Lopez was our Project Manager who was extremely thorough in explaining the process to us, explaining our various options, addressing all of our questions and concerns as well as managing the project to its completion.The roof replacement went without a hitch. These guys are great!
    2 years ago Read this review on Google
  • Google Verified
    Chris Richards
    Apex Roofing was excellent from start to finish! Jacob, our Project Manager, and everyone at Apex, was incredibly professional, honest and transparent at every step of the process. They worked directly with our insurer and got our claim handled with zero drama. And the roof looks great!
    2 years ago Read this review on Google
  • Google Verified
    Sandy Jensen
    Apex Roofing did an excellent job when they replaced our roof recently. Working with Elizabeth made the process a smooth one- she was on top of all the details, patiently answered our many questions time and again, and from start to finish she remained friendly, courteous and so very helpful. The crew were respectful of our yard and house and were meticulous about picking up all the debris that accumulated around the perimeter and in the yard. The results are first rate and I highly recommend Apex Roofing to anyone needing a roof replacement! I will definitely have them do any future work that may arise!
    a year ago Read this review on Google

Inside a Thornton Reroof, From Permit Application to Virtual Sign-Off

A Thornton roof replacement runs against a document the city publishes and the inspector works from. The permit comes first, the contractor has to be licensed with the city before it is issued, and the roof gets checked twice, once by photograph part-way through and once virtually at the end. It runs in four steps, and you can stop after any of the first three.

  1. 1

    Request a Free Roof Inspection

    Call Apex Roofing or send the form with your Thornton address and what you are seeing on the roof. Nothing gets quoted before someone has been up there and looked.

  2. 2

    Get a Clear Roof Evaluation

    Apex Roofing inspects the covering, the flashings, and the rooftop penetrations, then checks the gutters, roof edges, and drainage. Slopes are assessed separately, because in Thornton which slope is damaged changes the scope. Everything found is photographed.

  3. 3

    See the Scope and the Options in Writing

    Apex Roofing explains which path fits, whether that is a repair, a roof replacement, or gutter work, and why. Shingle selection is part of that conversation, because Thornton keeps an approved list and anything outside it needs a material review before the permit is issued.

  4. 4

    Build It Around the Inspection Sequence

    If you go ahead, the scope, timeline, materials, cleanup plan, and warranty-backed work are set out up front. Apex Roofing applies for the permit through the city portal and sequences the installation so the mid-roof photographs can be taken at the right moment rather than reconstructed afterwards.

Do I Need a Permit to Replace a Roof in Thornton?

Yes, once the work passes one square, meaning 100 square feet of roof covering. Less than that counts as a repair and needs no permit.

The rule that catches people out comes next. Once a permit is required, each slope with damaged shingles has to be replaced in full, because Thornton does not allow partial replacement of asphalt covering on a single slope. So patching the damaged section and leaving the rest is not a cheaper option, it is a scope the city will not sign off. That has direct consequences in a hail claim, and the insurance claim guidance below covers what to do about it. Current requirements are published in Thornton’s published Roofing Standards.

What Inspections Does Thornton Require, and Are They Really Done by Phone?

Three inspections, and yes. Replaced sheathing gets inspected before it is covered. The mid-roof inspection is submitted as photographs by text, with the old covering off, drip edge and valley flashing in, 75 to 100 percent of the underlayment down and 40 to 75 percent of the shingles on. The photos have to show the address, the ASTM marking on the underlayment, the starter course, the metal flashing, and six nails per shingle. The final inspection is done live over FaceTime or Google Meet.

The photographs are the inspection, so a crew that closes a roof before the status text comes back has created a problem that is expensive to undo. The FAQ below covers how inspections get booked.

Does My Roofer Need a City of Thornton Contractor License?

Yes, and unlike most places you can check it yourself. Thornton licenses every contractor before it issues a building permit, and roofing sits in its Class D Roofing license class. A license from a city Thornton reciprocates with is not enough on its own.

The city publishes its licensed contractor lists, so a contractor’s status can be checked with the Building Inspection Division. Its guidance also warns homeowners to be wary of any contractor who asks them to pull the permit, because a homeowner who pulls it becomes responsible for the whole project, including workers compensation and builders liability.

Trusted Local Experts

What Changes When Your Roofer Has Read Thornton’s Standards

North metro hail brings crews into Thornton who learned the rules somewhere else and apply them here. That is how a roof gets closed before the mid-roof text comes back, or a shingle gets ordered that is not on the city’s list, or a slope gets patched when the city requires the whole plane. Apex Roofing has worked on Colorado roofs since 2010, inspects before it recommends, and plans the install around the inspection sequence rather than around its own schedule. Thornton sits inside the daily route for a roofing company in Denver, CO rather than at the edge of a service map.

GAF Certified Roofing Contractor

Apex Roofing is an authorized installer. GAF ID: 1005038

Working the North Metro Every Week

Thornton, Northglenn and Westminster sit on the same daily route, so a north metro reroof is not an out-of-area job squeezed into a schedule.

Built Around the Photo and Virtual Inspections

Thornton checks the roof by texted photograph part-way through and virtually at the end, so the install is sequenced to hit those moments cleanly instead of working around them.

Attached Housing and Multi-Unit Permits

Townhomes, condos and duplexes carry their own permit rules in Thornton, where a whole building goes on one application. Experience with HOA and multi-unit work is the difference between one permit and a stalled project.

Clean and Safe Job Sites

Crews that protect landscaping and driveways, sweep for nails, communicate through the job, and leave the site clean at the end of each day.

How Apex Roofing Supports You

  • Roof inspections after hail, wind, or storm activity
  • Photo documentation of visible roof, flashing, and gutter damage
  • Slope-by-slope assessment so the documented scope matches what the city will permit
  • Repair or replacement recommendations based on inspection findings
  • Support for claim-related roofing questions and scope documentation
  • Coordination of the permit and required inspections once work is approved
  • Clear communication from the first inspection through close-out
Insurance Claim Support

When the City’s Scope and the Adjuster’s Scope Do Not Match

A claim is won or lost on documentation, and Thornton adds a wrinkle worth raising early. Because the city does not allow partial replacement of asphalt shingles on a single slope, a scope written to repair only the damaged portion of a slope describes work the city will not approve. Documenting which slopes are affected, slope by slope, at the inspection stage is what keeps that from surfacing at permit stage. Edge metal is the other one, since drip edge is required at eaves and rakes and an older roof may never have had it. Apex Roofing inspects the roof, records what is visible, and gives you a straight read on whether repair, replacement, or a claim is the sensible path.

Two things worth knowing about Colorado before you sign anything: your roofing contract has to be in writing and must include a clause letting you cancel within 72 hours, and a contractor cannot pay, waive, or rebate your deductible.

Learn About Our Insurance Claims Process

Thornton Areas Served

Apex Roofing serves properties throughout Thornton, covering the ZIP codes below. If your address is not listed, call and it gets checked.

South Thornton
The older neighborhoods around Civic Center and south toward the Northglenn line, where roofs tend to be on their second or third covering.
Central and East Thornton
The corridor either side of Washington Street and out toward I-25, mixing single-family homes with attached housing and commercial buildings.
North Thornton
The newer subdivisions north of E-470, where roofs are younger but hail exposure is the same.
Thornton ZIP codes
80229, 80233, 80241, 80260 and 80602, plus the surrounding delivery area. Confirm the parcel is inside the city limits, since neighboring jurisdictions permit their own work.

Not sure whether a repair on your roof crosses the line into permit territory, or which slopes are actually damaged? Call 303-691-5035 or send a message through the contact page and someone will get on the roof and tell you before anything is quoted.

Call 303-691-5035

Questions Thornton Homeowners Ask Before a Reroof

Who provides roof repair in Thornton, CO?

Apex Roofing does. It is a Colorado roofing contractor working across the Front Range and the north metro since 2010, and a GAF Certified Roofing Contractor, GAF ID 1005038. Apex Roofing inspects the usual Thornton trouble spots, including hail-bruised shingles, lifted edges at rakes and eaves, worn step flashing and pipe boots, poor nailing from a previous install, low-slope sections holding water, and dented or out-of-pitch gutters, then explains the practical fix before any work starts.

Can my roofer replace just the damaged part of one slope?

No, not once a permit is required. Thornton’s published Roofing Standards state that each slope containing damaged shingles must be replaced in its entirety, and that partial replacement of asphalt roof covering on a single slope is not allowed. The roofing process section above covers the permit threshold that triggers this. The point to add here is that it works in your favor during a claim: if a slope is damaged, the city’s own document says the whole plane goes, which is a stronger position than a homeowner arguing scope on their own. Different covering types can meet on the same roof, but only at a ridge, hip, or open valley.

Is ice and water shield required in Thornton?

Not automatically, and this is where advice from other parts of the metro goes wrong. Thornton’s Roofing Standards say ice and water shield is not required unless the shingle manufacturer’s installation instructions specify it. That is the opposite of the foothills jurisdictions, where an ice barrier is required outright, so a page or a roofer speaking about Jefferson County rules will mislead you here. Drip edge flashing is required either way, at both the eaves and the rake, extending over the plywood sheathing at the fascia. If your shingle’s warranty depends on the shield, the manufacturer’s instructions govern and it goes on.

Does Thornton really inspect roofs by photo and video call?

Yes. Mid-roof inspections are submitted as photographs by text, and final roof inspections are done virtually over FaceTime or Google Meet. The roofing process section above sets out what the mid-roof photographs have to show. Worth adding: the permit must be issued before you can schedule anything, requests made before 3:30pm can be asked for the next business day, an inspector confirms by text or call between 8 and 9am, and the inspector can require an in-person visit if the signal will not hold. Do not let a crew close the roof before the mid-roof status text arrives.

How much does a roof replacement cost in Thornton?

There is no honest single number, because the price follows the roof rather than the city. Size, pitch, access, the number of layers to remove, deck condition once the old roof is off, the shingle chosen and its wind warranty, the flashing and penetration count, and gutter work all move the figure. Thornton adds one factor most cities do not: because a damaged slope has to be replaced in full, the number of affected slopes changes the scope in steps rather than smoothly. A free inspection with a written scope is the only way to get a real number, and a bid quoted over the phone without one is a guess. If the damage is storm related, the claim conversation runs alongside this, and our insurance claims process page covers how that works.

How do I choose a roofing contractor in Thornton?

Start with the license, because Thornton makes it checkable. Ask whether the contractor holds a City of Thornton Class D Roofing license and verify it with the Building Inspection Division rather than taking the answer on trust. Then check four things. Will they apply for the permit themselves, since the city warns that a contractor asking you to pull it may not be licensed and that doing so makes you responsible for the project. Do they know the mid-roof photo requirements and plan the install around them. Is there a written contract, which Colorado’s residential roofing contract statute requires along with a 72-hour cancellation right and a statement that the contractor cannot pay, waive, or rebate your deductible. And is the labor warranty in writing. Apex Roofing provides a 5-year labor warranty on new roofs.

GAF Certified Roofing Contractor Townhome, Condo and HOA Experience Serving Colorado Since 2010

Start With an Inspection, Not an Estimate

Call Apex Roofing at 303-691-5035 or request your free roof inspection online. You do not need to work out whether your repair crosses the permit threshold, which slopes are damaged, or whether your shingle is on the city’s list. That is what the inspection is for, and you will get the options in writing before anything is committed.