Serving Greeley & Northern Colorado
Roofing Contractor in Greeley, Colorado
Drennen Custom Contracting provides roof replacement, roof repair, inspections, certifications, Class 4 and SBS roofing systems, metal roofing, flashing work, and attic-ventilation corrections for Greeley and surrounding Northern Colorado communities.
Drennen has served Northern Colorado since 1973. We evaluate the complete roof system—not only the visible shingles—so the written scope can account for decking, waterproofing, flashing, penetrations, ventilation, drainage, permit requirements, cleanup, and warranty options.
Homeowners comparing Greeley roofing companies should be able to see exactly what each proposal includes. Drennen serves Greeley from our Fort Collins office and writes the estimate around the complete roof assembly rather than reducing the decision to a shingle name or bottom-line number. Also serving Fort Collins — see our Fort Collins roofing services. Drennen also serves as a roofing contractor in Longmont.
Family-owned Northern Colorado contractor serving the region since 1973.
Greeley Roofing Services
Roof Replacement in Greeley, Colorado
A new roof installation in Greeley, Colorado should be designed as a complete water-shedding and ventilation system. Drennen removes the existing roofing as required by the written scope, evaluates the exposed deck, installs the specified waterproofing and underlayment, integrates flashing and penetrations, and installs the selected field shingles, starter, and ridge products. The proposal identifies the major system components so homeowners can compare competing bids on equivalent work instead of comparing only a shingle name or price per square.
Review roof-replacement costs and scope examples →Roof Repair in Greeley, Colorado
Not every roof problem requires replacement. When the surrounding roof remains serviceable, focused roof leak repair may correct the source of the problem or prevent a developing defect from spreading. A repair proposal identifies the work area, planned repair, and limitations. Repairing one area does not renew or warrant the remainder of an older roof.
Learn about Drennen roof repairs →Roof Inspections and Certifications
Drennen provides condition inspections, storm-damage evaluations, real-estate roof inspections, maintenance recommendations, and roof certifications when the observed condition supports one. The written findings can identify visible defects, estimated remaining service life, repair priorities, and conditions that require additional investigation.
See roof inspection and certification services →Class 4 and SBS Impact-Resistant Roofing
Northern Colorado homeowners frequently compare conventional architectural shingles with Class 4 impact-resistant products. Class 4 is the highest classification in the UL 2218 steel-ball impact test, but it does not make a roof hail-proof. Drennen can compare conventional shingles, non-SBS Class 4 products, and SBS polymer-modified Class 4 shingles. Ask the insurance agent whether the exact product qualifies for a discount or underwriting benefit. Carrier rules and policy terms control.
Compare Class 4 roofing systems →Attic Ventilation
A new roof cannot perform as intended if the attic lacks usable intake, has inadequate exhaust, mixes competing exhaust types, or sends bath moisture into the attic. Drennen evaluates the attic footprint, existing vents, listed net-free area, soffit conditions, roof geometry, and accessible exhaust ducts. The selected design must work as a system rather than as a collection of unrelated vents.
Understand attic ventilation and roof performance →Metal Roofing
Drennen installs and evaluates standing-seam, exposed-fastener, and stone-coated steel roofing where those systems fit the structure, slope, budget, and project goals. Panel profile, substrate, clips or fasteners, flashing, penetrations, ventilation, snow movement, and transitions all affect the final scope.
Compare metal roofing systems →Roof Repair Conditions Drennen Evaluates
- Missing, lifted, cracked, or damaged shingles
- Pipe jacks and other roof penetrations
- Sidewall, headwall, chimney, and kickout flashing
- Valleys, ridge caps, and low-slope transitions
- Bath, kitchen, combustion, and static roof vents
- Skylight and wall-to-roof details
- Localized decking, fascia, soffit, or siding damage connected to the roof assembly
- Attic ventilation and accessible exhaust-duct problems
Roofing for Greeley Weather and Existing Homes
Greeley roofs face the same demanding Northern Colorado conditions that affect the rest of the Front Range: hail, strong wind, intense sun, freezing temperatures, and repeated temperature swings. Those exposures can reveal weaknesses in the entire assembly, including edge attachment, flashing, ridge caps, brittle shingles, penetrations, drainage, and the roof deck below.
The age and construction of the home also matter. Established homes may contain previous repairs, multiple material generations, older decking, or ventilation that no longer matches the current roof. Newer homes can still have complex roof-to-wall intersections, blocked intake, disconnected bath ducts, or details that require correction during replacement.
Drennen writes the scope around the conditions observed at the property instead of assuming every Greeley roof needs the same assembly.
Greeley Permits, Codes, and Project Jurisdiction
The City of Greeley states that an owner or authorized agent must obtain a permit before regulated construction, alteration, or repair work begins. Greeley accepts permit applications through its eTRAKiT system and currently lists the 2021 International Building Code and 2021 International Residential Code among its adopted codes.
The City has also announced that, beginning January 1, 2027, contractors must hold a valid City of Greeley contractor license before applying for permits or performing regulated construction work. Rules, amendments, fees, licensing requirements, and inspection procedures can change.
Drennen verifies the authority having jurisdiction and the current requirements for the exact project address before work begins. A Greeley mailing address may not always determine the governing jurisdiction.
For permit and code information, see City of Greeley Building Permits and Inspections.
What a Complete Greeley Roofing Estimate Should Explain
A useful roofing estimate should let the homeowner understand what is being installed and what can change after tear-off. Depending on the project, Drennen's written scope may address:
- 1Measured roof area, pitch, layers, access, and roof geometry
- 2Exact field shingle, membrane, or metal-roofing product
- 3Starter, ridge, underlayment, and waterproofing components
- 4Drip edge, valleys, sidewalls, headwalls, chimneys, and kickout flashing
- 5Pipe jacks, bath vents, combustion vents, skylights, and other penetrations
- 6Known decking work and the price or process for hidden deck repairs
- 7Intake and exhaust ventilation
- 8Permit and inspection coordination
- 9Property protection, debris removal, and magnetic cleanup
- 10Product documents, workmanship terms, and available warranty registration
Two estimates using the same shingle name may still describe very different roof systems. Compare the complete scope, exclusions, and change-order terms—not only the bottom-line price.
The Drennen Roofing Process
- 1
Inspect and Measure
We document roof area, pitch, layers, access, penetrations, walls, flashing, visible deck indicators, drainage, and ventilation conditions.
- 2
Verify Jurisdiction
Drennen confirms the authority having jurisdiction and reviews the current permit, code, licensing, and inspection procedures for the address.
- 3
Write the Complete Scope
The proposal identifies the selected materials, accessory components, flashing, ventilation, known repairs, open conditions, warranty terms, and price.
- 4
Protect the Property
The staging plan considers landscaping, siding, windows, patios, driveways, gutters, neighboring property, and safe access around the work area.
- 5
Tear Off, Inspect, and Document
The existing roof is removed as required by the scope. The exposed deck and concealed transition details are evaluated. Hidden conditions are photographed and addressed through the written contract or change-order process.
- 6
Install and Close Out
The approved roof system is installed, required inspections are coordinated, debris is removed, the site is magnetically swept, and applicable product and warranty records are provided.
Hail and Wind Damage Roof Repair in Greeley, Colorado
After a storm, damage is not always visible from the ground. Missing shingles, exposed underlayment, displaced ridge caps, damaged flashing, fractured vents, impact marks, and collateral damage can help establish what happened, but age-related wear and installation defects must be distinguished from a specific storm event.
Drennen can inspect the roof, photograph observed conditions, and prepare a repair or replacement estimate. Drennen is a contractor—not a public adjuster—and does not interpret policy coverage, waive deductibles, or guarantee claim approval. The insurance carrier determines coverage under the policy.
Read Drennen's homeowner guide to insurance and roofing →Why Greeley Homeowners Choose Drennen
- Serving Northern Colorado since 1973
- Family-owned company with a local Fort Collins office
- Complete roof-system evaluation rather than a shingle-only scope
- Roof replacement, repair, inspections, Class 4, SBS, metal roofing, and ventilation capability
- Written scopes with clear components and exclusions
- Permit and inspection coordination based on the project jurisdiction
- Real project documentation and accessible local follow-up
- Owens Corning Preferred Contractor
Frequently Asked Questions
Request a Greeley Roofing Estimate
Tell Drennen whether the concern involves replacement, an active leak, storm damage, a real-estate deadline, ventilation, or a roofing-material comparison. We will route the request to the roofing team and prepare the next appropriate step.
Product availability, codes, permit procedures, licensing rules, warranty terms, and insurance treatment can change. Current agency requirements, the written proposal, signed contract, manufacturer documents, and insurance policy control.
Drennen Custom Contracting | Serving Greeley and Northern Colorado | 970-482-9100 | [email protected]