★★★★★
Great work. He is the best
— Peter La M., Derry, NH
Hillsborough County, NH
Metal Roofing in Hillsborough County — One Roof, Then Never Again
Southern New Hampshire carries a lot of old, densely built housing — mill-era neighborhoods in Manchester and Nashua, farmhouses in Weare and New Ipswich, and subdivisions now old enough to be on their second or third asphalt roof. Interlock breaks that pattern: one aluminum roof, installed once, warrantied for life.
★ 4.7 average from 233 verified New Hampshire reviews
New Hampshire line: (603) 803-4998 · Toll-free 1-866-733-5811
THE MILL-CITY ROOFLINE STAYS AS BUILT
Manchester and Nashua are full of tall, steep, multi-gabled homes designed around slate. Real slate runs roughly 8 to 10 psf and forces a structural conversation before a single panel goes on. Interlock's aluminum slate profile weighs 0.41 psf installed — the same look, none of the engineering.
THE ASPHALT CYCLE ENDS HERE
In a county this built-up, most homeowners are not buying a first roof — they are buying a replacement for a replacement. Interlock is manufactured by Interlock Roofing Ltd. and carries the Guardian Warranty: lifetime, and transferable to the next owner. It is the last roof the house needs.
WINTER LOSES ITS ENTRY POINT
Freeze-thaw is relentless in the Merrimack Valley, and every cycle works meltwater into asphalt laps. Interlocking panels give it no exposed seam to get under, and the surface sheds snow rather than holding a saturated mat against the deck. (Ice dams themselves are an attic insulation and ventilation issue, which we check at every estimate.)
AND IT IS INSTALLED BY ONE CREW
Interlock's exclusive certified New England installer does the work — not a rotating subcontractor — so the warranty and the workmanship come from the same place.
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.
Bedford, NH
Black
Manchester, NH
Deep Charcoal
Merrimack, NH
Deep Charcoal
Merrimack, NH
Deep Charcoal
Merrimack, NH
Deep Charcoal
Hillsboro, NH
Deep Charcoal
Merrimack, NH
Deep Charcoal
Pelham, 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
