Top Roofing Companies STLTwo measures, 222 companies, one pick
Keys Roofing, direct
(314) 220-2333
St. Louis MetroUpdated August 2026Advertising disclosure
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Ask What Happens to an Open Roof Over a St. Louis Winter

Compare how each roofer handles a partly torn-off roof through freeze-thaw months, and what to get in writing before the tear-off starts.

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Most roof replacements in the St. Louis area are scheduled for spring, summer, and early fall, but a job that starts in late October can still be open when the first hard freeze arrives. A partly finished roof then sits through overnight temperatures below freezing, rain that turns to sleet, and the freeze-thaw cycle that pushes water into every small gap. The useful question for each roofer is not whether the crew can work in cold weather. It is what your roof looks like on the night the crew leaves, and what the bid says about who pays to fix it if the weather gets in first.

Roofer comparison

Two bids can match on the first page and split apart once you ask about the open roof. One roofer may plan to remove only as much shingle as the crew can cover before dark, with the underlayment fastened and the edges sealed. Another may strip the whole slope in one morning and leave a large area of bare deck exposed for several days while they wait on materials or a dry forecast. The second plan moves the risk from the roofer's schedule onto your ceiling, your insulation, and your drywall.

Ask each roofer to describe, in their own words, the end of a typical workday in November. A clear answer names the sections that will be dried in, the tarps or temporary covers that will go over anything left open, and who checks those covers after a wind event. A vague answer such as we will take care of it is not a plan. Keys Roofing can describe its daily stopping point in writing, and you should expect the same level of detail from every bidder you compare.

Look also at how each bid handles material delivery. Shingle bundles that arrive in the cold need to be stored where they stay dry and off frozen ground, and a bundle left on the driveway through a warm afternoon and a freezing night can be harder to install cleanly. The date a bid assumes for delivery tells you whether the schedule has any slack in it. A bid that assumes perfect weather for six straight weeks has no slack at all.

What it costs

A winter open roof can add cost in ways that do not show up as a line item. If the crew has to return to re-tarp, re-seal, or re-dry a section after a storm, that trip is a second charge unless the bid says otherwise. The same is true of a replacement sheet of decking that is soaked and softened during an open night. Ask each roofer whether the price includes return visits for weather protection, and whether there is a stated limit on how many trips are covered before the work is billed by the hour.

Shingle sealing is another cost point. Sealant strips on asphalt shingles bond best in mild weather, and in cold conditions they may need to be hand sealed after installation. Keys installs Atlas and Malarkey shingles, and the sealing method for a late-season install should be part of the written scope, not something left to the crew on the day. If a bid omits hand sealing and you later need it, the extra labor is easy to overlook when you compare totals.

Interior protection belongs in the cost comparison too. Ask whether the bid includes covering attic contents, moving items away from access hatches, and protecting the top floor if the roof is open overnight. Those steps are usually small, but a bid that includes them is describing a crew that expects to leave the house dry, and a bid that does not should explain why.

What to ask

Put these questions to every roofer before you decide. Write down the answers, and compare them the same way you compare total prices.

  • What area will be open at the end of each workday, and what covers it overnight?
  • Who inspects the temporary covers after wind or rain, and how soon after a storm?
  • Does the bid include return trips for weather protection, and how many are included?
  • How will the shingles be stored before installation, and where will the bundles wait?
  • Will any shingles be hand sealed in cold weather, and is that step written into the scope?
  • If wet or softened decking is found during the tear-off, what is the rate and who approves it?
  • Who keeps the job photo log, and will you receive a copy each day the roof is open?

The photo log question matters more in winter than in summer. A dated set of photos showing the roof at the end of each day is the simplest record if a leak appears in the next thaw. Ask for the log before the first nail is driven, not after a stain appears on the ceiling.

When the leak shows up

A leak that appears during the thaw after an open-roof night may or may not be a claim under your policy, and that question is yours to take to your insurer. Missouri law bars a roofing contractor from representing or negotiating a homeowner's insurance claim, and it also bars a roofer from saying anything about paying, waiving, or covering a deductible. A contractor can document the damage, put a written scope with photos and measurements in your hands, and attend the inspection as the contractor while you deal with your own insurer directly. Ask each roofer what their file will contain before a problem happens, and whether they will give you a copy of that file on request.

If you are comparing bids this week, call the office at (314) 220-2333 and ask for the winter procedure in writing. Compare the answer against the other bids on the table. The roofer whose plan for an open night is the most specific, with the fewest unstated assumptions, is the one whose schedule you can actually plan around when the temperature drops.

A ladder rail with a black standoff bracket leaning against a weathered brown shingle roof that has lost granules in patches, with a black mesh gutter guard visible along the eave at the bottom right holding caught leaf litter
An older roof, still being worked on. Granule loss across the field, a mesh guard along the gutter holding caught leaf litter, and a ladder with a standoff bracket so the rails never touch the gutter. Photographed on a Keys Roofing job.
Our number one pick

Want Keys Roofing on your roof?

Every argument on this site is that a list cannot tell you whether a crew is any good, and that you have to get somebody on the roof and read what they write down. Keys Roofing is the company this site puts at number one on both of its rankings, and it holds that position on the five criteria printed in the How we rate box rather than on anything Google publishes about it.

What an inspection here produces is a set of photographs, a measurement of the roof, and a written scope that names the material, the underlayment, the flashing work, the ventilation and what happens if the decking underneath turns out to be soft. You keep that document whether or not you hire anyone. If a storm claim is part of your story, the claim stays in your name: under RSMo 407.725 a Missouri roofing contractor may not represent or negotiate it for you, and Keys does not.

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Roofing, gutters and downspouts across greater St. Louis. No siding, no windows, no commercial work.

(314) 220-2333

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