The median home in Glastonbury was built in 1976; there are 14,606 of them. What the code requires when that roof is replaced, and who signs off, is below.
New Roofing Costs connects homeowners with independent local roofing contractors. We do not perform roofing work.
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.
The rules for a reroof in Glastonbury
Permit
The 25 percent line
Without a permit, Connecticut allows only:
Repairs that are limited to 25 percent of roof covering and building siding within one calendar year.
2022 CSBC, (Amd) R105.2, item 11
A full replacement in Glastonbury is past that line; the town building official issues the permit.
IRC R908.3.1.1 forbids roofing over two existing layers, over slate or tile, or over a water-soaked roof. With 57% of Glastonbury’s homes were built before 1980, ask what is under the newest layer.
Required in Glastonbury, as in every Connecticut town
The state’s climate table marks the ice barrier “yes” statewide. That is a self-adhering membrane, or two cemented layers of underlayment, from the eave to at least 24 inches inside the wall line (IRC R905.1.2).
Connecticut adds a 4-inch self-adhering strip over all joints of a plywood or OSB deck ((Amd) R905.1.1). It is not needed under a fully adhered membrane, or on board decks under 3 feet wide.
Glastonbury’s code design values are a 120 mph ultimate design wind speed and a 30 psf ground snow load; it is in Connecticut’s hurricane-prone region. At that wind speed the code calls for asphalt shingles labeled ASTM D7158 Class G or H (Table R905.2.4.1).
Checked against the code text on October 24, 2026. Code edition, permit and contract rules for the whole state: roof replacement in Connecticut.
Homes and roofs in Glastonbury
83% of the occupied homes in Glastonbury are lived in by their owners: 11,884 households, the people this line is for. Counting by decade, 8% before 1940, 25% before 1960, 57% before 1980 of the housing was in place, and 13% dates from 2000 on. (ACS 2020–2024.)
The housing is 75% detached houses, 9% attached single-family houses (rowhouses, twins and townhouses), 6% buildings of two to four units.
Of the 29 Hartford County municipalities on this site, Glastonbury has the 19th largest share of homes built before 1980: 57%, against a county range of 48% to 87%.
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 Glastonbury
NOAA’s storm reports show 12 days since 2006 with hail of at least 1 inch inside a 10-mile circle around Glastonbury, topping out at 1.75 in on June 22, 2024.
That is more hail days than 77% of the places in the state on this site.
At the county level, Glastonbury shares Hartford County’s record of 6 storm disaster declarations since 2006, the newest DR-4580 (Tropical Storm Isaias, January 2021). (OpenFEMA.)
Lifespans come from HUD’s capital-needs table, not from a brochure. 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; 75% of homes here are detached
Class G or H at 120 mph design wind (IRC Table R905.2.4.1)
Metal (standing seam, panels)
50 years
Simple roofs with long, unbroken slopes
A complete standing-seam system may go over the old roof (R908.3.1)
Slate
75 years
Older houses; 8% here predate 1940
Never a base for a new layer (R908.3.1.1); heavy
Flat roof: EPDM or TPO
15 years
Additions and porch roofs
Seams at walls and drainage
Checking a contractor in Connecticut
Connecticut registers home improvement contractors and their salespeople with the Department of Consumer Protection (C.G.S. § 20-420); 24,065 contractor registrations were active in October 2026. Ask for the number of anyone pricing a roof in Glastonbury.
Is a permit required for a new roof in Glastonbury, CT?
The 25 percent line. A full replacement in Glastonbury is past that line; the town building official issues the permit.
Do the old shingles have to come off in Glastonbury?
IRC R908.3.1.1 forbids roofing over two existing layers, over slate or tile, or over a water-soaked roof. With 57% of Glastonbury’s homes were built before 1980, ask what is under the newest layer.
When were most homes in Glastonbury built?
By the Census Bureau’s American Community Survey (2020–2024), the median home in Glastonbury was built in 1976, 57% of homes were built before 1980, 83% are owner-occupied.
Does Glastonbury get hail that damages roofs?
Hail of 1 inch or larger was reported on 12 days within 10 miles of Glastonbury 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 Glastonbury have?
Connecticut registers home improvement contractors and their salespeople with the Department of Consumer Protection (C.G.S. § 20-420); 24,065 contractor registrations were active in October 2026. Ask for the number of anyone pricing a roof in Glastonbury.
What they will ask on the phone
Where the house is: the Glastonbury address or ZIP
One story or two (or more), detached or attached
The roof you have today, shingle, metal, slate, tile or flat, and its rough age
The number of layers, if anyone has counted
That you want a new roof or a full replacement, and when you want the work done
Whether the house is in a historic district or an HOA