★★★★★
Great work. He is the best
— Peter La M., Derry, NH
Grafton County, NH
Metal Roofing in Grafton County — Built for White Mountain Winters
Grafton County asks a great deal of a roof — White Mountain snow, notch wind, elevation, and the long freeze-thaw season of the Upper Valley. Interlock is built for exactly that: four-way interlocking aluminum panels, installed once by a certified crew, and warrantied for the life of the home.
★ 4.7 average from 233 verified New Hampshire reviews
New Hampshire line: (603) 803-4998 · Toll-free 1-866-733-5811
SNOW COMES OFF INSTEAD OF SITTING ON
At elevation the snow arrives early, stays late and rebuilds itself all winter. Interlock sheds snow rather than holding a saturated mat against the deck — and where meltwater does run, there is no exposed lap seam across the field of the roof for it to get under. (Ice dam formation itself is an attic insulation and ventilation issue, which we check at every estimate.)
NOTCH WIND HAS NOTHING TO CATCH
Wind funneled through the notches and down the valleys unzips asphalt the moment it lifts one tab. Four-way interlocking panels offer no such edge, and the system is warranted to resist wind speeds up to 120 mph (193 kph) when installed to manufacturer specification.
THE UPPER VALLEY KEEPS ITS ARCHITECTURE
Hanover, Lyme and Lebanon are full of homes whose rooflines were drawn for slate or cedar. Interlock offers both profiles in aluminum, at 0.41 psf installed versus roughly 8 to 10 psf for natural slate.
AND THE DIRT-ROAD PROBLEM GOES AWAY
At the end of a long dirt road, every trade visit is expensive. Buy the roof that never asks for another one.
Our work
Completed Interlock® roofs across New Hampshire
Every pin is a real installed Interlock roof — location, system and install year. Browse the New Hampshire directory of completed projects, or explore the map below.
Gallery
Interlock roofs installed across New Hampshire
Real homes, real installations — photographed after completion.
Thornton, NH
Deep Charcoal
Thornton, NH
Deep Charcoal
Alexandria, NH
Deep Charcoal
West Lebanon, NH
Tudor Brown
West Lebanon, NH
Tudor Brown
Alexandria, NH
Deep Charcoal
Thornton, NH
Tudor Brown
Thornton, NH
Deep Charcoal
Reviews
What New Hampshire homeowners say
★★★★★
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
★★★★★
Professional installation and a very durable product that looks great decades down the road. 3rd Interlock Roof and very happy
— Bruce M., Epping, NH
Towns we serve in Grafton County, NH
Alexandria, Bath, Enfield, Grafton, Lyme, Thornton, West Lebanon, Lebanon, Hanover, Plymouth, Littleton, Haverhill, Campton, Woodstock, Lincoln, Ashland
