Cracked panels, warped boards, peeling paint — these are signs your siding is failing before your eyes. Forge Siding delivers professional Siding across Thornton, CO with upfront pricing and crews who show up on schedule.
We didn't start Forge Siding to push volume — we built it because homeowners in Thornton kept getting burned by crews who cut corners on material selection, skipped moisture barriers, and left job sites messy. That's not how we work. Every Siding project starts with an honest assessment: we look at your substrate condition, check for existing rot or moisture intrusion, and talk through your options before a single nail goes in.
Every estimate is itemized and written down before we ever ask for a signature. You'll see material costs, labor, disposal, and any underlying repair work broken out separately — so you know exactly what you're paying for and why. We've completed thousands of Siding projects across Thornton, CO and our callback rate is under two percent. That number matters to us.
Most homeowners don't notice siding problems until water damage has already reached the sheathing. These are the signals worth acting on before the repair scope doubles.
Hairline cracks look cosmetic but they're water channels. Once moisture gets behind the panel and hits the housewrap — or finds no housewrap at all — sheathing rot starts within one season.
Buckling almost always means the substrate underneath has moved — often because moisture got behind the panel weeks or months ago. The panel is showing you the symptom, not the cause.
Interior peeling close to an outside wall isn't a paint problem — it's a moisture infiltration problem. Your siding is the likely culprit and ignoring it turns a siding job into a drywall and mold job.
A missing panel after a wind event or impact isn't just cosmetic damage. That exposed sheathing is collecting rain until you replace it. This is one repair that can't wait for a convenient schedule.
Old or failing siding, particularly if the housewrap underneath has deteriorated, acts like a thermal short-circuit. Your HVAC runs harder to compensate, and the bills reflect it before the siding looks obviously bad.
Heavy algae or mold staining on the exterior surface isn't just cosmetic — it means the surface is retaining moisture long enough for organic growth. That moisture is also working its way into the wall system.
Every job below starts with a free written estimate. We specify the product, the profile, the color, and the installation method upfront — so there's no ambiguity when work begins.
Fiber cement is the workhorse material we recommend most in CO's climate — it handles humidity, impact, and UV better than most alternatives and carries manufacturer warranties that actually hold up. We're certified installers for HardiePlank, HardieShingle, and competing fiber cement systems. Installation follows manufacturer specs to the millimeter: correct lap, correct fastener type and spacing, correct clearance from grade and roof surface, and full housewrap integration on every project.
Done right, vinyl siding is durable, low-maintenance, and cost-effective. Done wrong — wrong gauge, wrong fastener pattern, no expansion clearance — it warps in the heat and pulls loose in wind. We use .044" and .046" gauge panels minimum and follow thermal expansion specs precisely for CO's temperature range. Nail hem fastening at 16" centers, 1/32" expansion gap at all trim terminations, and a fully integrated vinyl accessory system so the corners, J-channel, and window trim all work together.
Engineered wood is popular in Thornton neighborhoods where the traditional wood look matters architecturally but the maintenance demands of real cedar or pine aren't practical. We install with stainless or hot-dipped galvanized fasteners to prevent iron staining at the nail head — a detail that separates a professional installation from a quick flip job.
Our repair crews use the same material standards as our full-installation teams — no caulking over gaps as a permanent fix, no missing sealant at transitions, no shortcuts on housewrap at the repair perimeter. If there's rot in the sheathing behind the damaged panel, we address it during the repair rather than covering it up.
Commercial and multi-unit projects have different demands — larger panel formats, longer exposure to foot traffic and equipment contact, stricter fire ratings in some occupancy classes, and coordinated scheduling with other trades. Forge Siding handles commercial cladding projects in Thornton, CO with full project management: dedicated site supervisor, daily progress reporting, and material delivery coordinated to minimize storage and laydown area on constrained sites.
Siding that terminates at rotted or missing fascia boards isn't protected — it's channeling water straight into the rafter tails. We routinely pair siding replacement with trim, soffit, and fascia work so the entire exterior envelope is addressed in one mobilization rather than two. PVC trim board, prefinished aluminum coil, and fiber cement fascia are all in our wheelhouse.
Four steps. Each one documented. No surprises at the invoice.
A thorough inspection before we quote means the estimate we hand you is accurate. We check the substrate, the existing housewrap or vapor barrier, window and door flashing, corner and soffit condition — all of it — so there are no hidden surprises once demo starts.
The estimate covers every line item — material, labor, disposal, permit fees if required in your jurisdiction. You pick the product, the profile, and the color with our input on what's going to perform best for your specific wall orientation, climate exposure, and substrate condition.
We schedule your project start date at contract signing and stick to it. Materials are delivered directly to the site before crew arrival — no day-of scrambling. We protect landscaping, windows, and any surfaces adjacent to the work area before the first panel comes off.
At project completion, we walk the entire exterior with you. Every run of siding, every corner, every trim termination — you look at it before we close out. If anything isn't right, it gets fixed on the spot. Our goal is that you refer us to your neighbor the week after the project wraps.
We don't sub out work to unlicensed handymen to cut costs. Every installer on a Forge Siding project is a W-2 employee or licensed sub with verified credentials and completed manufacturer training.
Upfront pricing means you know what you're paying before a single panel comes off the wall. Change orders require your written approval. We've built our reputation in Thornton, CO on the fact that our estimates are reliable.
We run our calendar tightly so the start date we give you is the date we're there. If a legitimate delay comes up — major weather, material shortage — we call you the day before and reschedule immediately, not a week later.
Old siding demo generates a lot of debris — old panels, nails, housewrap, fasteners. We haul it out daily. Your driveway, lawn, and landscaping are clean at the end of every work day — not just at project completion.
Every Siding project we complete is backed by our written workmanship warranty. If anything we installed fails due to installation error — a panel pulls loose, a trim joint opens, moisture gets in at a transition we sealed — we come back at no charge and fix it. Not a credit, not a partial. Fixed.
Get the Details on Our Warranty — +1-844-782-0929We don't cherry-pick — these are verbatim accounts from homeowners who hired us for Siding work across Thornton, CO.
We had three other quotes before calling Forge Siding. The difference was the inspection — they actually walked the whole house with a moisture meter and found soft sheathing behind two panels on the north wall that nobody else mentioned. The estimate covered the sheathing repair too, so no surprise charges when demo day came. Final result is clean and tight. We'd hire them again without hesitation.
A storm took out a whole section of vinyl on the east side of our house. I called four contractors — three of them said they'd have to replace the entire elevation because they couldn't match the profile. Forge Siding's estimator sourced a matching panel through their supplier network and did a clean repair. You can't tell where the new material starts. Saved us probably $4,000 compared to a full-side re-do.
We went with insulated vinyl — Forge Siding recommended the insulated backer for our exposure and the energy savings have been real. First heating season after the install, our gas bill dropped noticeably. Installation crew was professional, on time every day, and the lead installer walked me through every elevation before he called the project done.
I had a specific architectural profile I wanted for the gable ends — a shingle exposure pattern — and everyone else told me it was a custom order with a six-week wait. Forge Siding had it in stock through their regional supplier and we started within two weeks of signing. The detail work at the gable peaks is clean and exact. Not every contractor has the skill to do that level of trim work.
I'm a home inspector by trade, so I know what cutting corners on a siding installation actually looks like behind the panels. Forge Siding's work is correct — right fastener pattern, proper clearances from grade and roofline, continuous housewrap with taped seams at all penetrations. This is how it's supposed to be done and most of the crews I see in Thornton, CO don't do it this way.
We had three bids and Forge Siding was the only contractor who physically checked the housewrap condition before quoting. Everyone else just looked at the surface. They found a section of torn WRB behind the garage bay that needed patching and included it in the estimate. When you're spending this much on an exterior, you want a company that checks the whole wall system, not just what they can see from the ground.
We get these questions every week. Here are the honest answers.
We're not a national call center subcontracting your project to whoever's available. Our crews are based in and around Thornton, CO. We know local code requirements, local supplier lead times, and local weather patterns — and that local knowledge shows up in how the project runs.
Reach us at +1-844-782-0929 and we'll confirm service at your location. Most addresses in and around Thornton are within our standard service radius with no travel fee.
Don't let failing siding go another season. Call Forge Siding and we'll have an estimator out to your property within 24 hours.
Call +1-844-782-0929 Now