When your siding needs work — whether it's a full replacement, storm damage, or a long-overdue upgrade — our Cortland, IL crews show up prepared, price it fairly, and get it done right. No guesswork, no hidden fees.

What separates our Cortland operation from the competition isn't a slogan — it's the fact that every estimate we write is signed by a licensed contractor, every project has a named lead installer accountable for the outcome, and every job site is cleaned before we leave at night.
We work on everything from single-family homes in residential neighborhoods to commercial cladding on multi-family buildings and light industrial structures across IL. 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 Cortland, IL 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.

Catching siding failure early is the difference between a repair and a replacement. Here's what to look for on your Cortland, IL property.
Cracked panels aren't just cosmetic — they're open invitations for moisture infiltration. Any crack that reaches through the panel face needs attention.
Water staining on drywall near exterior walls is one of the clearest indicators of a failed building envelope. By the time interior damage is visible, moisture has usually been active behind the cladding for weeks or months.
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.
Paint peeling from the outside isn't always a paint problem — it's frequently caused by moisture migrating through the panel from the unpainted back face. Re-painting without addressing the back-face moisture cycle just delays the failure.
Panels that rattle in wind, move when pressed, or show corrosion staining around nailheads need a fastener audit. Corroded fasteners eventually fail completely, and a panel without fasteners is a panel waiting to blow off.
Failing siding, missing housewrap, or compromised flashing at penetrations significantly reduces wall R-value and allows air infiltration. If your heating and cooling costs have climbed without a clear explanation, the building envelope is a legitimate suspect.
Every service below is performed by our own licensed crews — not passed off to a subcontractor network. We carry the tools, the product certifications, and the field experience for every scope we quote.
New siding installation covers everything from the housewrap to the trim: starter strip, flashing at all penetrations, panel installation per manufacturer spec, and finishing trim at corners, windows, and the roofline. We work on new construction alongside GCs and handle full tear-off replacements on existing homes. Our Cortland, IL crews are certified on vinyl, fiber cement, engineered wood, and steel panel systems — and we carry each product's installation manual on every job.

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 IL 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 Cortland 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.

On replacement projects, we replace trim components that are damaged or compromised regardless of the primary panel material — because leaving old, failing trim behind a new siding installation creates the exact problem the new siding was supposed to solve.

A professional siding inspection before buying or selling a Cortland, IL 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."

There are plenty of siding contractors in IL. Here's what separates the ones worth hiring from the ones who cost you twice — once for the job and once for fixing what they did wrong.
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.
Our IL dispatch operates from locally based crews — not a regional office routing jobs to whoever's available statewide. That means faster arrival windows, familiarity with local permit offices, and crews who understand Cortland, IL building code requirements.
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.
A crew that leaves a clean site every evening is a crew that respects the property they're working on. Our standard includes daily cleanup as a non-negotiable part of the project schedule.
Documentation that exists only in our files doesn't help you. We hand over a complete close-out package at final walkthrough, organized and ready for your records.
No mysteries, no moving goalposts. The same documented process runs on every project we take in IL.
Your first call goes to a real dispatcher who asks the right questions. We arrive at the site assessment with the tools to measure, probe for moisture, and give you an accurate picture of what the project actually involves.
You receive a line-item estimate within 24 hours of the site visit. We bring material samples to the estimate meeting and walk through product trade-offs relevant to your Cortland, IL property — climate exposure, HOA requirements, budget, and maintenance preference all factor into the recommendation.
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 IL 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 Cortland, IL Specialist NowWe replaced siding on the whole house after hail damage. Forge Siding handled the insurance documentation — panel-by-panel photos, written damage report, the whole package. The adjuster approved full replacement scope on first review. Crew finished in six days, clean site every night, and the new fiber cement looks exactly like what we picked from the sample.
Emergency call on a Saturday night after wind blew off eight panels on the back wall. Someone actually answered. Crew was on site Sunday morning, boarded up the exposed section, and had permanent panels installed by Tuesday. I'd been skeptical of "24/7" claims from other contractors — this is what it actually looks like.
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.
I verified their license number in the state database before signing. Current, no disciplinary history. That two-minute check told me this was a contractor operating transparently. Everything about the project execution matched that first impression.
Forge Siding provides residential and commercial Siding across the full Cortland, IL service area from our local Cortland dispatch base. We're familiar with local building codes, permit requirements, and contractor licensing standards across IL — no learning curve on your project, no out-of-area crew navigating unfamiliar conditions on their first day.
Currently active in: 60112 60151 and surrounding areas
Reach our Cortland dispatch line for fast scheduling, honest pricing, and a crew that actually shows up when they say they will.
📞 +1-844-782-0929 — Talk to a Specialist