Compare STL RoofersThe sheet, and our picks
Keys Roofing, direct(314) 220-2333
St. Louis MetroUpdated August 2026Advertising disclosure

Compare STL Roofers · The public record

Ask Each Roofer Who Trained the Crew on the Shingle Manual

Ask each St. Louis roofer who taught the crew the shingle maker's installation steps, and keep the answer in writing before you compare bids.

Every roofer who bids on your house will say the crew is experienced. Fewer will say who taught those crew members the shingle manufacturer's installation instructions, and that answer separates bids more than the sales pitch does. Shingle warranties generally depend on the product going on the way the maker printed it: nail placement, nail count, exposure, starter strip, ridge capping, and sealant where the product calls for it. A crew that learned on other roofs may have habits that work on many days and still miss the printed rule on the one roof where it matters.

Why the training question belongs in a comparison

St. Louis puts shingles through hard seasons. The freeze-thaw cycle works on any small installation error, lifting a tab that was never sealed or pulling at a nail that was set a little high. Hail season tests the edges and the nail line, and summer heat softens shingles enough that a bad sealant bond can show up as a lifted corner by the next year. A shingle installed to the printed instructions gives you a fair baseline for those tests. A shingle installed from memory gives you a guess, and a guess is hard to hold a roofer to when the first ice storm arrives.

Where a missed step shows up first

Most installation errors are not visible on the day the crew leaves. Starter strip that stops short at the rake will show up as wind-driven rain under the edge. Nails driven too high in the field can let the shingle above them lift in a gust, and overdriven nails can cut the mat so the shingle loses strength before it loses color. Hips and ridges are often the last courses laid, and they are where a rushed crew cuts corners on cap overlap. Each of these is a question you can ask before the job starts, and each answer tells you whether the roofer has thought about the step or is hoping nobody checks.

When you ask about these steps, ask where the roofer expects a problem to appear first. A roofer who has worked through a St. Louis winter will name the eave, the rake, or the valley without hesitation. A roofer who answers with a general sentence about quality has not given you a place to look two years from now.

What to ask each roofer

Ask the same five questions, in the same order, of every roofer on your list. Write each answer down as it is given, not as you remember it later.

  1. Who taught the lead installer to install the shingle line you are buying, and when?
  2. Is the manufacturer's installation sheet on the job site, and who reads it before the first nail goes in?
  3. Does the crew get product training, in person or in writing, and can you see a record of it?
  4. Where in the sequence do you check your own work, such as nail placement on the first course and the exposure line before the next slope starts?
  5. If the sealant strips do not bond in cold weather, what does the crew do, and who makes that call?

What a useful answer sounds like

A useful answer names a person, a date, and a document. "We have done hundreds of roofs" tells you about volume, not about who knows the printed steps. "Our lead installer went through the manufacturer's instructions with the crew before the spring season, and the crew keeps the sheet on the truck" gives you something you can check on roof day. For example, the first answer leaves nothing to inspect, while the second gives you a sheet to ask for and a date to confirm.

Notice whether the answer holds when you ask a follow-up. Ask who was in the room for the training, and ask what they were shown. If the second answer contradicts the first, or the roofer changes the subject, that is comparison data, and it belongs in the same column as the price. A roofer who can repeat the same answer twice, a week apart, has given you something that can be checked.

When a roofer cannot show a record

Missouri does not license roofers at the state level, so there is no state card that confirms a crew member has been trained on a shingle line. A card would not settle the question anyway, because it would not say which product the crew learned or how recently. The record has to come from the roofer. If a contractor cannot name who trained the crew, or cannot show any written material from that training, weigh the gap in your notes the same way you would weigh a missing price line.

Ask for a short written statement that says what the crew was taught and when. A roofer who will put that in writing has given you something to hold them to after the job is done. A roofer who will not put it in writing has told you something too.

What it costs

Training is rarely a separate line on a roof bid, so it is easy to assume it is free or already included. Ask directly. Find out whether any product walk or crew instruction is billed separately, whether it sits inside the labor figure, and whether the price changes if the crew needs a refresher before your job starts. A bid that includes the training time and says so is easier to compare than one that leaves the question for the final invoice.

If a roofer says training is included, ask where in the bid it appears. A labor total with no breakdown leaves you guessing, and a guess is hard to compare across three bids.

Keep the answers on one sheet

Put the five answers for each roofer in one column, with the bid total in another column beside them. When one roofer gives a clear, dated answer and another gives a general one, the sheet shows the difference without anyone having to argue about it. Add a note for any answer that changed when you asked a follow-up, so you remember to check it at the walk.

If you want to ask the same five questions of Keys Roofing, call the office at (314) 220-2333 and write down the answers the same way you would for any other roofer on your list.

From the company at number one

Ask us for the document, not for the ranking

A star rating separates the disasters from everyone else and then stops being useful. What separates the rest of the field is the written scope and who is actually standing on the roof, which is what the five criteria at the top of this page are built around.

Keys Roofing works in the same market as every other name on this page, and the fastest way to test our pick is to make us prove it on your own roof. Ask for the scope, lay it beside the two you already have, and hold all three against the same five questions.

The office line

Straight through to the Keys Roofing office. If you would rather talk it through than type it out, this is the line.

(314) 220-2333

Ask for the third scope

Roof replacement. St. Louis metro only.

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