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

What separates our Mercer Island 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.
Our Mercer Island, WA teams operate on a tight scheduling protocol: we don't book jobs we can't start within a reasonable window, we communicate proactively if anything in the timeline shifts, and we don't consider a project closed until the customer signs off on the walkthrough.
Licensed, bonded, and carrying full general liability plus workers' compensation in WA — not because it's optional, but because those protections matter for homeowners who invite a crew onto their property. Ask for our certificate of insurance before signing anything; we provide it without hesitation.

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.
Hairline fractures in vinyl or fiber cement are entry points for water. Even a small crack at a window corner can let moisture work into sheathing within a few rain cycles.
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.
Buckled panels rarely fix themselves. The deformation increases with each heat cycle, and the gap at the panel lock grows. This is one of those issues that gets significantly more expensive if ignored.
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.
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 Mercer Island, WA 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 Mercer Island 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 WA and understand what documentation a claim requires.

Each cladding material has its own installation requirements, failure modes, and maintenance profile — and a crew that treats them all identically is a crew that will make material-specific mistakes. Our Mercer Island, WA specialists understand fiber cement's silica cutting protocols and back-priming requirements, vinyl's thermal expansion characteristics and lock-engagement tolerances, and wood's moisture content sensitivity and end-grain sealing needs. We don't sell you a product and then install it generically.

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 Mercer Island, WA 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 Mercer Island, WA 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 WA. 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.
Every estimate we write lists materials, labor, and any permit fees as separate line items. You know what you're paying for before signing anything — no lump-sum guesses that hide markup.
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.
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.
A predictable process reduces stress and produces better results. Here's exactly what happens when you contact our Mercer Island, WA team.
Call our Mercer Island, WA 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.
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 Mercer Island, WA property — climate exposure, HOA requirements, budget, and maintenance preference all factor into the recommendation.
Where permits are required in WA, we handle the application, filing fee, and inspection scheduling. Your confirmed start date is put in writing and we communicate proactively if anything changes — you don't have to follow up with us.
Surprises are handled on your schedule, not ours. We document unexpected findings with photos, give you the repair cost in writing, and proceed only with your explicit sign-off.
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.
If our workmanship doesn't meet the standard we committed to in writing, we come back and make it right at no additional charge. That's not a marketing statement — it's the language in our warranty document, signed at project close. Our Mercer Island, WA clients get a document they can actually reference, not a slogan.
Talk to a Mercer Island, WA 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.
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.
Had a historic cedar profile on our 1920s home that needed matching for a repair section. Forge Siding sourced a custom-milled profile from a sample board, got it approved through the preservation office, and executed a repair that's completely indistinguishable from the original. Real expertise for an unusual requirement.
The crew found rotted sheathing on the west wall during tear-off. Called me immediately, showed me exactly what they found with photos, and gave me the change order before touching anything. The whole process was transparent from start to finish — that's exactly how contractors should handle unexpected conditions.
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 Mercer Island, WA service area from our local Mercer Island dispatch base. We're familiar with local building codes, permit requirements, and contractor licensing standards across WA — no learning curve on your project, no out-of-area crew navigating unfamiliar conditions on their first day.
Serving zip codes: 98040
Reach our Mercer Island dispatch line for fast scheduling, honest pricing, and a crew that actually shows up when they say they will.
📞 Call +1-844-782-0929 — Free Estimate