From new construction cladding to emergency storm repairs, Forge Siding delivers field-tested Siding across Boulder and the surrounding CO service area. Call today for a free on-site estimate.

Forge Siding has been handling Siding projects across Boulder, CO for over fifteen years. Our lead installers carry manufacturer certifications on every major cladding system we work with — fiber cement, vinyl, engineered wood, steel — and our crews don't sub out the skilled work to whoever's available that day. The same team that estimates your job is the team that executes it.
We work on everything from single-family homes in residential neighborhoods to commercial cladding on multi-family buildings and light industrial structures across CO. If it involves protecting a building's exterior envelope, we have the tools, the certifications, and the track record to handle it properly.
Every Forge Siding project in Boulder, CO comes with a written workmanship warranty. Not a verbal assurance — an actual document with our license number, a defined coverage period, and a clear process for raising any concern after project completion.

Most siding problems start small and quiet — a missed fastener, a failed caulk joint, a crack that looks cosmetic. By the time interior moisture damage appears, the repair scope has usually doubled. Watch for these early signals.
Cracked panels aren't just cosmetic — they're open invitations for moisture infiltration. Any crack that reaches through the panel face needs attention.
Musty smell in exterior-adjacent rooms, soft drywall near windows, or paint bubbling on interior walls all point to moisture infiltration from outside. Don't wait.
Warped vinyl often means panels were installed too tight — no expansion room for thermal movement. Over time, buckling creates gap points where panels separate at the lock, letting wind and water in.
Exterior paint peeling within two to three years of a repaint is almost always a substrate or back-priming issue. We diagnose the cause before recommending a fix.
Fastener issues are quiet until they're catastrophic. A section that blows off in a windstorm — and the water damage that follows — costs far more to fix than a fastener re-drive.
Air leakage through a compromised siding system can account for 10–20% of HVAC load. Addressing the envelope often produces measurable utility savings alongside the repair value.
Our Boulder, CO team handles the full range of residential and commercial cladding work, from single-panel repairs to complete building envelope re-siding.
Installation quality determines how long your siding actually lasts. The product you choose matters, but the installation practice matters more: correct expansion gaps, back-primed field cuts, properly integrated housewrap, and flashing that doesn't cut corners at rough openings. Our Boulder crews treat those details as non-negotiable, not optional.

For insurance-related repairs, we produce a detailed damage documentation package — panel-level photos, square footage by elevation, material specifications — formatted for adjuster review. We've worked with every major carrier operating in CO and understand what documentation a claim requires.

Fiber cement carries a 30-year material warranty when installed by a certified contractor — but only when the installation follows manufacturer specifications precisely. Our Boulder crews hold Preferred Contractor status on major fiber cement lines, meaning the full material warranty stays intact for the homeowner.

Property managers and HOA boards working with us get a dedicated project point of contact, building-by-building scheduling, and standardized documentation — including permit records, warranty registrations, and post-project photo files — formatted for HOA board records and reserve fund reporting.

Siding doesn't end at the wall panels. Soffit, fascia, corner posts, J-channel, window and door trim, and all penetration accessories are part of the building envelope — and failing trim is one of the most common moisture entry points we encounter. Our Boulder, CO crews handle the complete trim system as part of every installation, not as an optional add-on. Vinyl soffit and fascia wrap, HardieTrim boards, and aluminum-capped fascia are all in our scope.

A professional siding inspection before buying or selling a Boulder, CO property gives you panel-level condition documentation that general home inspectors can't produce. We use calibrated moisture meters, close-range panel assessment, and caulk probe testing to generate a written report with photo documentation and a priority-ranked deficiency list. Pre-purchase inspections have identified sheathing moisture damage on properties where the general inspection reported the siding as "functional."

These aren't marketing claims. They're the operational commitments our Boulder, CO clients reference when they recommend us to their neighbors.
Our written estimates don't disappear after the handshake. They become the contract, and the final invoice reflects the estimate scope. If something changes, we issue a written change order before doing additional work.
We don't schedule jobs we can't start within a reasonable window. If our current backlog means a delay, we tell you upfront and give you realistic dates — not optimistic ones.
An unlicensed crew on your property creates liability exposure for you, not just for them. Our credentials are public record and we never hesitate to provide documentation.
A warranty that isn't in writing isn't a warranty. Ours is a document you can file, reference, and enforce.
We sweep for fasteners and nails every afternoon before leaving, protect landscaping and driveways with staging tarps, and haul debris off-site rather than leaving a roll-off on your driveway for weeks.
Every Forge Siding project in Boulder, CO closes with a documentation package: permit records, manufacturer warranty registrations, post-project photos by elevation, and our workmanship warranty. That file is useful for insurance claims, home sales, and HOA records long after the project ends.
A predictable process reduces stress and produces better results. Here's exactly what happens when you contact our Boulder, CO team.
Call our Boulder, CO dispatch line or request a callback. We schedule a free on-site assessment within 24–48 hours, measure every relevant surface, document existing conditions, and note any substrate concerns before quoting.
The estimate is a document, not a handshake. It lists every component — panels, trim, housewrap, fasteners, labor, permit fees — so you know exactly what's included before signing.
Material is ordered against the confirmed schedule. We don't start jobs with missing material. Your crew arrives on day one with everything staged and a clear sequence plan for the project.
The lead installer contacts you each morning to confirm the day's scope and each afternoon to report what was completed. If the inspection uncovers unexpected substrate conditions, you hear about it same-day with a written change order before we touch anything additional.
At project completion, we walk every elevation with you, confirm every scope item is complete, and hand over the close-out package: permit records, manufacturer warranty registrations, post-project photos, and our written workmanship warranty. Final payment is collected after the walkthrough sign-off — not before.
We back every Siding project in CO with a written workmanship warranty. The warranty period, covered defects, and resolution process are all spelled out before we start. No fine print that swallows the coverage.
Talk to a Boulder, CO Specialist NowThree bids, three different approaches. Forge Siding was the only contractor who showed up with a moisture meter at the estimate visit and flagged elevated readings behind our north-facing panels before we even discussed product. That kind of diagnostic thoroughness sold us immediately.
The estimate they provided was the most detailed written document I've received from any contractor in 20 years of homeownership. Line items for every material component, labor broken down by scope, permit fee listed separately. No surprises when the final invoice came.
Pre-purchase inspection on a property we were considering saved us from a significant surprise. Forge Siding found sheathing moisture on two wall sections that the general home inspector had noted as "siding in acceptable condition." The seller ended up crediting the repair cost. That inspection paid for itself many times over.
Fiber cement installation — the back-priming, the fastener schedule documentation, the warranty registration process — was handled exactly as the manufacturer requires. Our close-out package has the Preferred Contractor registration and the complete fastener log. The 30-year warranty is in force.
Vinyl siding on our 1970s ranch — they explained the expansion gap tolerances, why the installation they were replacing had buckled, and what they were doing differently. The finished product has gone through one full summer without a single moving panel.
The daily communication system — a morning text with the day's plan and an afternoon report of what was completed — kept me in the loop without requiring me to check in on them. They finished on schedule and the property was completely clean when they left for the last time.
Forge Siding provides residential and commercial Siding across the full Boulder, CO service area from our local Boulder dispatch base. We're familiar with local building codes, permit requirements, and contractor licensing standards across CO — no learning curve on your project, no out-of-area crew navigating unfamiliar conditions on their first day.
Currently active in: 80310 80304 80305 80302 80303 80301 80309 80314 and surrounding areas
Call our Boulder, CO team now for a free on-site estimate, a written line-item quote, and a project timeline you can count on. We pick up the phone — 24/7 for emergencies, business hours for standard inquiries.
📞 Call +1-844-782-0929 — Free Estimate