When water has damaged your Gilsum property, every hour without professional intervention expands the loss. Our IICRC-certified Water Damage Restoration team arrives fast, assesses completely, and restores systematically — from initial extraction through final reconstruction.
Crew stationed in Gilsum — not routed from another region.
WRT & ASD certified on every Gilsum job.
Xactimate estimate reviewed with you before work begins.
Your adjuster hears from us, not you.
Here's what separates COS Water Damage Restoration's Water Damage Restoration service from every other option in Gilsum.
Every technician holds active NH contractor licensing and IICRC WRT certification. Full general liability and workers' comp coverage is in force on every Gilsum job.
Our Gilsum-based crews target 60-minute on-site response. We don't route your emergency through a regional call center — local dispatch means faster arrival and better outcome.
We quote in writing before we start. What you approve is what you pay.
Every Water Damage Restoration job in Gilsum carries our written satisfaction guarantee. If the result doesn't meet the documented standard, we return and make it right at zero additional cost.
COS Water Damage Restoration's Water Damage Restoration service in Gilsum covers the complete recovery process — from the first emergency response through mold prevention, structural drying, and full rebuild.
Speed at this phase directly determines how much is salvageable. Our Gilsum crews don't slow down on the way to your property.
Every affected assembly is documented with instrument readings before drying begins.
Drying isn't complete until the numbers confirm it — not when a certain number of days have passed.
Antimicrobial treatment is applied to all moisture-exposed structural surfaces as a standard preventive step in every Gilsum Water Damage Restoration job. Where mold growth is identified, IICRC S520-compliant remediation — with HEPA containment, negative air pressure, and clearance testing — is performed before reconstruction begins.
Supplement filing for underpaid Gilsum claims is part of the service.
One company, start to finish.


Call +1-844-499-0972 any time — a live Gilsum dispatcher answers immediately, gathers the details, and deploys the nearest crew. No voicemail, no automated queue, no call-back-tomorrow policy.
Local crews mean local speed — we know Gilsum's roads and we move fast.
No work starts without your written approval of the scope and cost.
Extraction, drying, remediation, and reconstruction proceed under daily monitoring and documented progress reporting. The job isn't complete until final moisture readings confirm success and you've conducted the walkthrough with your project manager.



"Our Gilsum business had a roof-to-slab water event on a Thursday night. By Friday morning COS Water Damage Restoration had extracted everything, staged drying equipment, and given me a documented scope I could hand directly to my adjuster. We were operational again the following week. Truly professional."
"I was terrified the hardwood floors in our Gilsum home were gone after the flooding. The COS Water Damage Restoration crew brought in mat drying systems and dried them in place — saved us thousands versus replacement. The project manager called every morning with readings. Outstanding."
"Mold discovered during our Gilsum renovation led us to COS Water Damage Restoration. The remediation was thorough, the clearance report was accepted by our contractor and insurer on the first submission, and we were back on schedule within the week."
Our Gilsum-based crew serves the surrounding area — if you're not sure whether we cover your location, call +1-844-499-0972 for instant confirmation.
Don't let moisture work deeper into your Gilsum property's structure. One call starts the entire restoration process.
📞 Call +1-844-499-0972 — Gilsum Emergency Response24/7 Live Dispatch · Licensed & Insured · Free On-Site Assessment · Gilsum, NH