Roof Replacement in Granby, MA

Half of the 2,535 homes in Granby were built before 1966. The rules below decide how much of the old roof has to come off and what goes under the new one.

New Roofing Costs connects homeowners with independent local roofing contractors. We do not perform roofing work.

Call (833) 781-1806 Replacement and new roofs only · homeowners

This number connects homeowners who are planning a new roof or a full roof replacement with independent local roofing contractors. It is not for leak repairs or patch jobs. The call must come from the homeowner who decides on the roof. Calls may be recorded.

A Massachusetts Cape Cod house with a new shingle roof after light snow

The rules for a reroof in Granby

Permit

Expect a building permit

Massachusetts exempts sheds, fences and finish work from permits (R105.2), not roofing. In Granby the building department takes the application, with the contractor’s home improvement registration on it.

Source: 780 CMR 51.00, Chapter 1 amendments (R105)

Layers

Two layers means a tear-off

A new roof may go over one existing layer; with two or more, or over slate, clay or cement tile, everything comes off to the deck (IRC R908.3.1.1). 65% of Granby’s homes were built before 1980, so count the layers before comparing quotes.

Source: IRC 2021, Chapter 9 (Pennsylvania edition, UpCodes); 780 CMR 51.00, Chapter 9 amendments

Ice barrier

Required statewide

Massachusetts answers “yes” to the ice barrier for every town. It runs from the eave to 24 inches inside the exterior wall, more on steep roofs (IRC R905.1.2); check that the quote lists it.

Source: 780 CMR 51.00, Chapter 3 amendments (Tables R301.2(1) and R301.2(2)); IRC 2021, Chapter 9 (Pennsylvania edition, UpCodes)

Wind and snow

114 mph design wind, 35 psf ground snow

Granby’s code design values are a 114 mph ultimate design wind speed and a 35 psf ground snow load (35 psf minimum flat-roof snow load). At that wind speed the code calls for asphalt shingles labeled ASTM D7158 Class D, G or H (Table R905.2.4.1).

Source: 780 CMR 51.00, Chapter 3 amendments (Tables R301.2(1) and R301.2(2)); IRC 2021, Chapter 9 (Pennsylvania edition, UpCodes) (780 CMR 51.00, Table R301.2(2))

Checked against the code text on October 24, 2026. Everything else the state requires: roof replacement in Massachusetts.

Homes and roofs in Granby

Owners live in 2,203 of Granby’s occupied homes, or 95%. Counting by decade, 5% before 1940, 45% before 1960, 65% before 1980 of the housing was in place, and 10% dates from 2000 on. (ACS 2020–2024.)

The housing is 85% detached houses, 5% buildings of two to four units.

Of the 16 Hampshire County municipalities on this site, Granby has the 9th largest share of homes built before 1980: 65%, against a county range of 42% to 73%.

ZIP codes: 01033

Granby and the towns around it

Place	Median built	Before 1980	Owners	Row, twin	Hail days
Granby	1966	65%	95%	2%	18
South Hadley	1961	68%	77%	9%	19
Ludlow	1964	67%	78%	3%	19
Belchertown	1984	42%	87%	2%	13
Chicopee	1958	80%	56%	8%	17
Holyoke	1950	84%	41%	8%	19

Median built: median year the homes were built. Before 1980: share of homes built then. Owners: share of homes that are owner-occupied. Row, twin: share of homes that are rowhouses, twins or townhouses. Census ACS 2020–2024. Hail days: days with hail of 1 inch or larger within 10 miles, 2006–2025, NOAA Storm Prediction Center.

Hail and storms near Granby

Since 2006 the National Weather Service has logged hail of 1 inch or larger on 18 separate days within 10 miles of Granby; the largest was 3 in on July 26, 2011. The most recent was August 26, 2024.

That is more hail days than 95% of the places in the state on this site.

At the county level, Granby shares Hampshire County’s record of 6 storm disaster declarations since 2006, the newest DR-4110 (Severe Winter Storm, Snowstorm, and Flooding, April 2013). (OpenFEMA.)

Storm reports are what observers logged, not a measure of damage to any roof. When wind or hail damage means a new roof.

What goes on the roof next

HUD’s useful-life figures are for planning; a warranty is a separate promise. For Granby’s houses: More in the guides to shingles, metal, slate and flat roofs.

Material	HUD useful life	Fits a house like	Watch for
Asphalt shingles	20 years	Most pitched roofs; 85% of homes here are detached	Class D, G or H at 114 mph design wind (IRC Table R905.2.4.1)
Metal (standing seam, panels)	50 years	Roofs that will carry solar later	A complete standing-seam system may go over the old roof (R908.3.1)
Slate	75 years	Older houses; 5% here predate 1940	Can’t be roofed over; check the framing for the weight
Flat roof: EPDM or TPO	15 years	Additions and porch roofs	Coating is not a replacement

Checking a contractor in Massachusetts

Two numbers to ask for in Granby: the HIC registration (M.G.L. c. 142A, for owner-occupied homes of one to four units) and the construction supervisor license (CSL) with the roof covering specialty.

Contracts, deposits and the right to cancel: checking a roofing contractor. What moves the price: new roof cost in Massachusetts.

Questions about a new roof in Granby

Is a permit required for a new roof in Granby, MA?

Expect a building permit. Massachusetts exempts sheds, fences and finish work from permits (R105.2), not roofing. In Granby the building department takes the application, with the contractor’s home improvement registration on it.

Do the old shingles have to come off in Granby?

When were most homes in Granby built?

By the Census Bureau’s American Community Survey (2020–2024), the median home in Granby was built in 1966, 65% of homes were built before 1980, 95% are owner-occupied.

Does Granby get hail that damages roofs?

Hail of 1 inch or larger was reported on 18 days within 10 miles of Granby from 2006 through 2025 (NOAA Storm Prediction Center). A report means hail fell nearby, not that a roof was damaged.

What license or registration should a roofer in Granby have?