Replace a roof when repairs are chasing one failure after another, not just when the calendar says so. Look at age, the number of shingle layers, curling or bare shingles, failing flashing around chimneys and dormers, and attic evidence of leaks. A roofer who inspects the deck and attic can tell you whether repair still makes sense.
Key takeaways
- Hartford's median year built is reported as 1931, with about 38.5 percent of its homes built before 1939, so many roofs here are on their second, third or later replacement.
- Asphalt shingles are limited to two layers (IRC R908.3). A roof that already has two layers is a tear-off, which also lets a roofer see the wood beneath.
- Flashing at chimneys, dormers and valleys fails before open shingle fields do, especially on the steep-gabled Colonial Revival and Tudor Revival houses of West Hartford.
- The attic tells you things the shingles cannot. Stained wood, damp insulation, bright pinholes of light and air leaks around pull-down stairs, fans and recessed lights all matter.
- A full re-roof needs a building permit under the 2022 Connecticut State Building Code, and town rules differ. Houses in historic districts may need extra review.
- Nobody can tell from a distance or on the phone whether a roof is sound. An inspection by an independent roofer is the only real answer.
How old is too old for a roof on a New England house?
There is no single age. Published figures for asphalt shingles vary, and the real question is the condition of your roof, which depends on its layers, ventilation, exposure and installation. Find out when it was last replaced, how many layers there are, and ask a roofer to inspect rather than guess from the date.
Many older homeowners in Greater Hartford do not know when their roof was last done. Hartford's reported median year built is 1931, and about 34.7 percent of its homes were built between 1940 and 1969, so a great many roofs have been replaced at least once without the paperwork surviving. If you bought the house recently, check the closing documents and the inspection report, and look for a permit record at the town building office.
If nothing turns up, treat the age as unknown and let the roof's condition decide. On a house with an unknown history, two quick questions are worth asking: how many layers are there, and what does the attic look like? The answers are more useful than any lifespan figure from a contractor's website, which is why this guide quotes none.
What can you see from the ground that suggests the roof is wearing out?
Look for shingles that curl, cup or lift, bare patches where granules have worn away, granule grit in the gutters, missing shingles, sagging ridge lines, moss on shaded slopes and rusted or loose flashing. None proves a roof must be replaced, but several together are a reason to have a roofer inspect.
Stand across the street, or in the yard, and read the roof the way you would read a face. A roof wearing evenly looks uniform in color and line. A roof that is failing may show patches of different tone, rippled lines, shingles that stand away from the slope and a dip in the ridge. Binoculars help, and a phone camera zoomed in gives you a record to show the roofer.
Check the gutters and the ground below the downspouts. Asphalt shingles shed granules slowly over their life, and a handful in a gutter is normal. A steady drift of grit is worth a note. On shaded north-facing slopes, check for moss, which holds moisture against the shingles. Where trees overhang, as in wooded lots in Bolton, Burlington and Marlborough, look for leaf and needle debris packed into valleys.
We do not tell people their roof is sound or unsound from a description. These signs tell you when to ask a roofer to go up and look, and our page on roof inspection describes what that visit covers.
- Curling, cupping or lifting shingle edges
- Bare, dark or shiny patches where the granules are gone
- Missing shingles, or shingles creased across the middle
- A sagging ridge or a visible dip between rafters
- Moss or algae on shaded slopes, and debris in valleys
- Rust, gaps or dried sealant at chimney and wall flashing
- Gutters full of granule grit or pulling away from the fascia
How many layers of shingles are on the roof, and why does it matter?
Asphalt shingles are limited to two layers under IRC R908.3. Older houses are often on their second or third roof, and a roof with two layers must be stripped to the deck before new shingles go on. Ask the roofer to confirm the layer count at the edge or in the attic, and to inspect the decking after tear-off.
Layers are common on older homes because a second layer used to be a way to avoid the cost of tearing off the first. The trade-off is weight, trapped moisture and a roof that hides what is beneath it. A tear-off lets the roofer see the wood deck, replace any that has rotted or been stained by years of leaks and start from a clean surface.
In towns where houses have been re-roofed repeatedly, such as Plainville with its small older homes on tight lots, Portland on its old riverside streets, and the worker houses of Canton's Collinsville, the layer count is the first question worth asking. Older village houses in Farmington may carry slate, cedar or multi-layer roofs, so a tear-off inspection comes before a firm price. The roofer should tell you in writing what will be done if rotted decking is found, and how that extra work is priced and approved.
Why do chimneys, dormers and valleys fail first?
Flashing is a joint between two surfaces that move at different rates, and old houses have many of them. Chimneys, dormers, valleys and wall intersections let water in when metal, sealant or mortar has aged. A roof field can be sound while one flashing failure keeps staining the same ceiling.
The West Hill Drive district in West Hartford holds 25 architect-designed Colonial Revival and Tudor Revival houses built mostly in the early to mid 1920s, and the Hartford Golf Club district has houses built between 1915 and 1936 in the same styles. Houses of this age often have steep gables, dormers, chimneys and valleys, and each is a place where flashing matters. The same is true of plain mill-village houses with a single masonry chimney through the ridge.
A roofer will look at the step flashing along walls, the counterflashing at the chimney, the crown and mortar joints of the chimney itself, and valley metal. Often the repair is local and the rest of the roof is fine. Sometimes the flashing work is the best evidence that the whole roof is due, because the shingles around it are as old as the metal. Our pages on flashing repair and chimney flashing and repair go through each repair.
What does the attic show about the roof above it?
The attic shows moisture and heat. Look for dark stains on the underside of the roof deck, damp or compressed insulation, rusty nail tips, daylight through the boards and signs of air leaks. Local guidance names attic insulation of R-49 to R-60 and sealing air leaks as the first defence against ice dams.
Take a flashlight and look from the hatch, without stepping on insulation or joists you cannot see. A stain with a dark edge on the underside of the sheathing is usually an old leak, and a damp patch is a current one. Staining around the chimney points at the flashing. Staining along the eave lines points at ice dams or poor ventilation.
The same space shows why a good roof can still leak. Heat escaping from the living space melts snow, and the water refreezes at the cold eaves. The remedies are attic insulation in the R-49 to R-60 range, sealing air leaks around pull-down stairs, vent fans and recessed lights, and a roof rake for a single-story house. Do not put salt or calcium chloride on a roof. See our page on attic ventilation and insulation for how a roofer or insulation contractor looks at the problem.
Southington, where temperatures often hover near freezing, is one town where ice dams are a named concern. Fixing the attic first can save a new roof from the same fate as the old one.
Repair or replace: how do you decide?
Repair when damage is local and the rest of the roof is sound. Replace when problems are spread across the roof, the shingles are worn through, the deck is damaged or repairs keep recurring. A roofer should explain which applies, show you evidence and put the scope for either choice in writing.
A single lifted flashing or a handful of missing shingles after a windy night is a repair job. Widespread curling, granule loss over entire slopes, soft decking or leaks in several unrelated spots point toward replacement. Between these lie roofs where a roofer might say that a repair is worth doing now and a replacement should be planned for within a few years. That is a legitimate answer, though you should not accept it without evidence.
The table sets out how the usual evidence points one way or the other.
| What you find | Leans toward | Why |
|---|---|---|
| A few missing or lifted shingles on one slope | Repair | Damage is local and the field is otherwise intact |
| Leak at one chimney or dormer | Repair, with flashing work | Water entry is at a detail rather than across the roof |
| Curling or bare shingles across whole slopes | Replacement | The covering is wearing out as a whole |
| Two layers already on the roof | Replacement, with tear-off | A third layer is not allowed, and the deck needs inspection |
| Soft, stained or rotted decking found during a repair | Replacement of the affected area at least | The structure under the shingles is compromised |
| Repeated leaks in different places after repairs | Replacement | Patches are chasing a roof-wide problem |
| Ice dams every winter with a well-sealed roof | Attic work, then reassess | The cause may be heat loss rather than the covering |
What should you know about permits and historic districts?
A full re-roof needs a building permit under the 2022 Connecticut State Building Code, while minor repairs such as replacing a few shingles typically do not. Town rules differ, and a house in a historic district may need extra review. Ask your roofer who pulls the permit, and confirm with the town building office.
Permit-guide sites list permit pages for West Hartford, East Hartford, Glastonbury and Newington, but listings are only a starting point and the town's own building office has the final word. Structural changes, such as dormers or a changed pitch, need extra plans.
Old Wethersfield is the state's largest historic district, with about 1,100 buildings and more than 150 built before 1850. The Cheney district in Manchester has about 210 company houses built between 1850 and 1920, and Glastonbury's historic district includes frame houses from the 17th and 18th centuries. If you live in or near a district, ask before assuming any material or color will be accepted. Our page on roofing for historic homes has more on what to ask.
Frequently asked questions
How do I find out when my roof was last replaced?
Check the closing documents, a past home inspection report and any paperwork from the previous owner. Ask the town building office whether a permit was issued, since a full re-roof needs one. If none of this turns up, treat the age as unknown and ask a roofer to inspect.
Can a new roof go over the old one on an older house?
Only if the existing roof has fewer than two layers of asphalt shingles and the roofer judges the deck and surface suitable. With two layers the answer is a tear-off. Even with one, many roofers prefer to strip it, so ask for the reasoning in writing.
Is it worth replacing a roof before selling an older house?
That depends on its condition, your timeline and what buyers and inspectors are likely to raise. We cannot predict a sale. A written inspection from an independent roofer can help you decide between repairing, replacing or disclosing what is there.
What time of year is best to replace a roof in Connecticut?
Roofing is usually easier in dry, moderate weather, and winter snow and ice can delay work. That said, a leaking roof does not wait for the season. Ask the roofer about timing, and what temporary protection is possible if a replacement has to be scheduled later.
Should I fix the attic before replacing the roof?
If ice dams or damp insulation are part of the story, yes, or at the same time. Attic insulation in the R-49 to R-60 range and sealed air leaks address the cause of ice at the eaves, and a new roof over a leaky attic can form dams just as the old one did.
Sources
- Wikipedia - Hartford, Connecticut
- Wikipedia - Wethersfield, Connecticut
- Connecticut Department of Consumer Protection
This guide is general information for Hartford County homeowners, not a substitute for an on-site inspection. Prices are estimates. See our disclaimer.