Work was done efficiently quick. Workplace was clean after job.
— Robert P., West Lebanon, NH
Rockingham County, NH
New Hampshire's coastline is short, which means the weather that comes off it hits hard and hits everything behind it. Salt, driven rain and nor'easter wind age a Seacoast roof quickly and keep at it. Interlock is the roof that stops that clock: aluminum, installed once, with a lifetime limited warranty.
★ 4.7 average from 231 verified New Hampshire reviews
New Hampshire line: (603) 803-4998 · Toll-free 1-866-733-5811
Salt-laden air rides inland well past the beach towns, and what it attacks first is not the panel but the steel fastener holding it down — which is how a roof loosens from the deck long before it looks worn. Interlock is aluminum throughout. It does not rust.
From Hampton to Seabrook there is nothing between your roof and open water, and asphalt fails when wind catches a single lifted tab and works down the slope. Interlock's four-way interlocking panels leave no exposed lap seam across the field of the roof, and the system is warranted to resist wind speeds up to 120 mph (193 kph) when installed to manufacturer specification.
Exeter, Kingston and the older village centers were built for slate, and going back to real slate means carrying roughly 8 to 10 psf. Interlock's aluminum slate profile installs at 0.41 psf and holds the same line without structural work.
In the commuter towns — Salem, Windham, Londonderry, Atkinson — homes change hands often. The Guardian Warranty from Interlock Roofing is a lifetime limited warranty, transferable, so the next owner inherits a roof, not a project.
Gallery
Real homes, real installations — photographed after completion.

Northwood, NH
Deep Charcoal

Northwood, NH
Deep Charcoal

Northwood, NH
Deep Charcoal

Northwood, NH
Deep Charcoal

Hampstead, NH
Colonial Brown

Hampstead, NH
Colonial Brown

Hampstead, NH
Colonial Brown

Hampstead, NH
Colonial Brown
Reviews
Work was done efficiently quick. Workplace was clean after job.
— Robert P., West Lebanon, NH
Great work. He is the best
— Peter La M., Derry, NH
This has been one of our best investments ever. It wasn’t perfect when they finished but the after installation follow up has been. Navir always has been very professional, friendly and polite. I always have tried to tip him, he never accepts it but is grateful for the offer. I highly recommend this company.
— Jon T., Center Harbor, NH
They gave us a prompt response when our roof was damaged by a tree branch. Looks as good as new !
— John B., Chester, NH
Nazar was wonderful! I can’t thank him enough!
— Jeffrey Y., Hampton, NH
Naz, worked for hours non stop doing the repairs , He had a lot of stamina and knowledge on how to remedy any damage . Afterwards he showed me the finish product , I was and still am amazed as to the quality of his works
— Andy B., Barrington, NH
Atkinson, Deerfield, Derry, Epping, Hampstead, Hampton, Kingston, Londonderry, Newmarket, North Hampton, Northwood, Nottingham, Raymond, Salem, Windham, Exeter, Portsmouth, Seabrook
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