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Winter Roof Guide

Is Your Roof Ready For Winter? A New England Checklist (And What To Do If It Leaks In January)

Roofs in Tewksbury are built to a 50-pound-per-square-foot snow load, and a bad February tests every one of them. Here's what to check from the ground before the first freeze, and exactly what to do if water shows up mid-winter.

Senco roofer securing shingles at the roof edge of a Tewksbury home before winter

The Ground-Level Checklist (Ten Minutes, No Ladder)

Stand across the street with binoculars if you have them, then walk the perimeter, then poke your head into the attic. You're looking for:

  • Shingles that are curling at the edges, cracked, or missing. A few lifted tabs after a windstorm are a repair; curling across a whole slope means the roof is near the end of its life.
  • Granules collecting in the gutters or at the downspout outlet. Some grit is normal; handfuls of it means the shingles are wearing through.
  • Flashing around the chimney, plumbing vents, and skylights. Rust, lifted edges, or caulk that has cracked and pulled away. Flashing is where most leaks start.
  • Valleys where two roof planes meet, clear of leaves and debris. Water and ice concentrate there.
  • Gutters clean, attached tight, and draining away from the house. A clogged gutter is the foundation for an ice dam.
  • Soffit vents under the eaves, open and not painted over or stuffed with insulation.
  • Attic: daylight through the roof deck, water stains on the underside of the sheathing, rusty or frosty nail tips, and insulation depth. If you can see the tops of the ceiling joists, there isn't enough.
  • Sag in the roofline. A dip between rafters means the decking has softened; a sag along the ridge is structural. Either one gets looked at before snow adds weight to it.

Anything on that list you're not sure about, our fall inspection is free. We look at the same things from the roof and the attic, and you get a plain answer about whether it's fine for winter, needs a repair, or is a replacement conversation for spring.

Why 50 Pounds Per Square Foot Matters

The Massachusetts building code sets a design snow load for every town. Tewksbury, Billerica, Chelmsford, and Lowell are all in the 50-pound-per-square-foot column, which is what a roof here is engineered to carry. That number covers a normal winter with a margin. What eats the margin is wet snow, which weighs three to four times what the same depth of powder does, and a string of storms with no thaw between them.

The rule of thumb: start paying attention after about six inches on the roof, and take it seriously after a foot of wet snow or repeated storms that stack up. Pull the lower three or four feet clear with a roof rake from the ground after any big storm; that removes weight at the eave and starves an ice dam of its raw material. Creaking, a ceiling that suddenly sags, or interior doors that start sticking are load signs, and they mean call now. Our snow load guide goes deeper, and our crews handle roof snow removal all winter with the right equipment.

The Code Detail That Saves Ceilings

When an asphalt roof is replaced in Massachusetts, the code requires an ice barrier at the eaves: a self-adhering waterproof membrane under the shingles, running from the roof edge up past the line of the exterior wall. Its whole purpose is ice dams. If a dam forms and water backs up under the shingles, it hits rubber instead of bare plywood and runs back out.

Roofs installed before that requirement, or installed without it, have no second line of defense. If your roof gets ice dams every winter and it's more than fifteen or twenty years old, the leak and the age usually get solved together. Every roof we install carries the ice-and-water barrier at the eaves and in the valleys, proper ventilation, and flashing that's sealed rather than caulked over; the details are on our roofing page.

If Your Roof Leaks In January

It happens, and the order of operations matters.

  • Contain it. A bucket under the drip, plastic over anything below it, and a small hole poked in a sagging bulge of ceiling so the water drains into the bucket instead of spreading across the drywall.
  • Stay off the roof. A snow-covered roof is not a place for anyone without a harness. Nothing you could do up there is worth the fall.
  • Photograph everything. The stain, the drip, the ice on the eave outside, the date. Your insurance company will want it, and so will we.
  • Call. We hold a 48-hour response on repair calls through the winter. If the cause is an ice dam, we clear it with low-pressure steam, which melts the ice off without damaging the shingles. If the cause is wind damage or flashing, we make it watertight the same visit.
  • Expect a two-step fix. Some winter repairs are permanent on the day. Others get a proper temporary patch, because shingles need warmth to seal and a full section can't be reworked at ten degrees. The permanent repair follows on the first mild stretch, and the leak stays stopped in between.

Repairs run all winter. Full replacements get harder after late November because shingles need warmth to seal, so if the fall inspection says the roof is done, the right schedule is a permanent patch now and the new roof in spring.

Does Insurance Cover It?

Generally, homeowners insurance covers sudden damage: a tree limb, wind that lifts shingles, an ice dam leak that ruins a ceiling. It generally doesn't cover a roof that failed because it was old or wasn't maintained, and some policies pay less on roofs past a certain age. Every policy is different, so call your agent early, send the photos, and ask what's covered before any permanent work starts. We provide the written assessment and photos adjusters ask for.

Repair Or Replace Before Winter?

If the inspection finds a few lifted shingles or a bad chimney flashing, that's a repair, and a fall repair is cheap insurance against a January leak. If more than about a quarter of the roof is damaged, or it's past twenty years, replacement is usually the better money; our guide to the 25% roofing rule explains how to make that call. Most asphalt roofs in Tewksbury run about $9,000 to $12,000, the instant roof quote gives you a real number in minutes, and financing starts at 0% for 12 months.

Want a straight answer on your roof before the snow?

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Winter roof questions we get every year

Can a roof be repaired in winter?

Yes. Leak repairs, flashing, ice dam removal, and replacing wind-damaged shingles happen all winter, and we hold a 48-hour response on repair calls through the season. Some repairs get a proper temporary patch first, because shingles need warmth to seal and a full section can't be reworked in deep cold; the permanent repair follows on the first mild stretch. Full roof replacements get harder after late November for the same reason.

Does homeowners insurance cover a leaking roof?

Usually when the cause is sudden: wind damage, a fallen limb, or an ice dam that pushed water into a ceiling. Usually not when the roof leaked because it was old or wasn't maintained, and some policies reduce what they pay on roofs past a certain age. Policies differ, so photograph the damage, call your agent before permanent work starts, and ask what's covered. We supply the written assessment adjusters ask for.

How much snow is too much on a roof?

Start paying attention after about six inches of accumulation, and take it seriously after a foot of wet snow or repeated storms with no thaw between them. Wet snow weighs three to four times what the same depth of powder does. Roofs in Tewksbury and the surrounding towns are designed for a 50-pound-per-square-foot ground snow load, but creaking, a sagging ceiling, or doors that suddenly stick mean the roof is under real load and it's time to call.

Should I rake snow off my roof?

Yes, from the ground, with a long-handled roof rake, after any storm that drops six inches or more. Clearing the lower three or four feet above the eave takes weight off the overhang and removes the snow an ice dam is built from. Leave an inch behind rather than scraping to bare shingle, and never do it from a ladder next to an icy roof. Two stories up, or heavy wet snow, is where you call a crew.