Seasonal

Roof Repairs Before Winter in Fort Collins: What Can’t Wait

By Fort Collins Roof Repair · September 20, 2026 · 5 min read

Late September in Fort Collins is the last comfortable stretch to get on a roof. By late October the first wet snow has usually come through, and by December the shingles are too cold to seal reliably and the crews are working around ice. So if the fall look-over turned up a list of problems, the question is which ones need a roofer this month and which can honestly wait until April. This is how we triage them. Prices are typical Fort Collins ranges, not a quote.

Must be done before the first heavy snow

Any active leak. Obvious, but people wait. Water that's coming in during a September rain is coming in during the October snow, and the meltwater cycle — snow melts on a sunny afternoon, refreezes overnight, melts again — pushes more water through a small opening than a summer storm does. A leak fixed now is $300–$1,500. The same leak in February is that plus drywall, insulation, and sometimes a rotted top plate.

Cracked pipe boots. A boot with a split collar is an open path for meltwater, and it sits right in the middle of the slope where snow lingers. $250–$450 now. Left until spring, it's usually a stained bathroom ceiling and a sheet of decking.

Lifted or creased shingles on the west-facing slopes. Chinook winds come off the foothills at 60–80 mph a few times every winter. A shingle whose seal strip has let go will be in the neighbor's yard by January, and the underlayment under it will be exposed to the next snow. $300–$800 to patch and reseal.

Missing or cracked ridge caps. The ridge is where wind pressure is highest and where snow blows off first. An open ridge cap admits wind-driven snow straight into the attic. $400–$900.

Exposed decking of any kind. From a limb strike, a torn shingle, a raccoon — anything that has the plywood open to the sky needs at least a tarp before the snow. Tarps are $300–$700; the repair follows once it's dry.

A hail inspection if there was hail this summer. Not a repair, but the claim clock is running, and a bruised roof under a winter of freeze-thaw is worse in April than it is now. The hail damage page explains the process.

Should be done before winter if the budget allows

Ice-and-water shield at the eaves. If the house was roofed before the early 2000s and has stained decking along the eaves in the attic, it's leaking every March from ice dams. Adding a membrane strip at the eaves means pulling and re-laying the first few courses — $600–$1,400 per eave run. It stops the damage; it doesn't stop the ice. That takes attic insulation and ventilation, which is a winter-friendly indoor job, and the attic insulation post covers it.

Chimney flashing that's caulked, not flashed. The old galvanized-and-caulk flashing on Old Town brick chimneys usually holds through a summer and lets go during the freeze-thaw. If the attic shows stains around the chimney, $600–$1,500 for step and counter-flashing now beats an emergency in January. If it's dry, it can wait.

Valley re-lay. A valley showing worn shingles but no stains yet can usually go through one more winter. One showing stains in the attic can't. $500–$1,200.

Can safely wait for spring

Cosmetic hail scuffing with no bruising. Photograph it, file it, leave it.

A single cracked ridge cap on the leeward side, with the field intact. Watch it; fix it in April with anything else that turns up.

Skylight flashing that stains only in a driving summer rain. Winter snow doesn't drive sideways the way a July downpour does. Note it for spring, unless the attic shows the stain growing.

Ventilation work. Ridge vents and soffit intake are best cut in during a replacement or in mild weather. If the attic is running warm this winter, clear the soffit vents from inside and plan the ridge vent for spring.

Full replacement of an old but dry roof. A 19-year-old roof with no active leaks and no hail claim can usually go through the winter. Get quotes now while crews are quiet — winter and early spring are the fastest time to get on a schedule in Fort Collins, and a sunny 45-degree day in January is fine for installation. Read the repair versus replacement post before you decide, and the replacement page for what the new roof should include.

The triage table

What we do when we can't get to it in time

If the first snow beats the schedule, we tarp what needs tarping and put the permanent roof repair on the list for the next dry week. Shingles seal fine on a sunny winter afternoon above 40 degrees, and Fort Collins gets plenty of those between storms. What we won't do is install shingles on a frozen deck in a north wind and call it done.