Why three roofing quotes rarely compare cleanly
Ask three North Dallas roofers to price the same roof and you can easily get $9,000, $13,500 and $21,000 back. That spread is not always dishonesty. Most of it comes from the quotes covering different work.
One bid assumes the decking is fine. Another budgets for replacing eight sheets of rotted plywood. One includes new pipe boots and step flashing, another reuses whatever is up there. One adds ridge vent, one leaves the turbines. Until every quote lists the same line items, you are comparing prices for different jobs.
So the job is not to find the lowest number. It is to get the three quotes onto the same page first, then look at price.
The 12 line items every roofing estimate should spell out
Take each written quote and check it against this list. Anything a roofer will not put in writing is a thing you will be arguing about later.
- Tear-off or overlay, and how many layers. Garland allows up to two layers of shingles under the 2015 International Residential Code. If a third layer is going on, the existing layers have to come off first. The quote should say which one you are getting.
- Decking replacement, priced per sheet. Nobody knows how much rotted plywood is under your shingles until the tear-off. A good quote names a per-sheet price up front so the change order is not a surprise. A quote with no decking line is a quote with a hole in it.
- Underlayment type. Felt or synthetic, and how it is fastened. Synthetic costs more and holds up better through a Texas summer of foot traffic and heat.
- Ice-and-water shield in the valleys and around penetrations. Cheap in materials, expensive to add after the fact.
- New flashing, not reused flashing. Step flashing at walls, chimney flashing, apron flashing. Reusing bent flashing is one of the most common corners cut on a fast job.
- Pipe boots and vents. New boots should be standard. Cracked boots are one of the most common leak sources we find on roofs under ten years old.
- Ventilation. Ridge vent, turbines or box vents, and the intake to match. Attic ventilation affects how long the shingles last in North Texas heat, so it belongs in the quote, not in a conversation later. We go into the detail in our attic ventilation guide.
- Drip edge. Required, frequently omitted from cheap bids.
- The exact shingle line, not just the brand. "GAF" is not a spec. GAF Timberline HDZ is. Class 4 impact-resistant shingles cost more and can earn you a mandatory Texas insurance discount, which changes the real cost of the roof.
- Who pulls the permit. In Garland, a permit is required once the value of the work hits $2,000, and the roofer has to be registered with the city as a General Contractor. See our Garland roofing permit guide for what that involves.
- Cleanup and magnet sweep. Nail cleanup, dumpster placement, landscaping protection, and who hauls the debris.
- Both warranties, in writing. The manufacturer covers the shingle. The roofer covers the labor. Ask for the length of each, and ask what voids them.
Four questions that tell you more than the price does
Once the scopes match, these get at whether the company will still be around when you need them.
How long have you worked from this address?
Not how many years in business. How long at this specific local address. After a hail event, DFW fills up with crews that will be in another state by spring. A roofer with a fixed local address has a reputation that costs them something to lose.
Can I see proof of general liability and workers' compensation insurance?
Ask for the certificate, not a verbal yes. If an uninsured worker is hurt on your roof, that can land on your homeowner's policy. Garland requires roofing contractors to carry insurance and to list the City on the certificate as part of registration, so any roofer working legally in Garland already has the paperwork on hand.
Who is actually on my roof, and who is running the job?
Most roofers use crews. That is normal. What matters is whether someone from the company is on site, who you call when something goes wrong, and whether that person answers.
What happens if you find something unexpected?
Rotted decking, a bad chimney, a second layer nobody knew about. The answer you want is that they stop and call you with a price before they keep going.
Where the cheapest bid usually gets its price
When one quote comes in thousands under the others, the money is almost always coming out of one of five places: reused flashing, no new pipe boots, felt instead of synthetic underlayment, no decking allowance, or a shorter labor warranty. Sometimes it is a genuinely leaner overhead. Often it is scope.
Ask the low bidder to price the exact line items from the highest bid. If the gap closes, you learned something. If it does not, you may have found a genuinely better price.
On insurance claims, watch for one specific pitch
If your roof is a storm claim, the comparison changes. Your insurer approves a scope and a dollar amount, and most reputable roofers will work to that scope. What should stop you cold is any contractor offering to pay, waive, absorb or "take care of" your deductible. Texas law requires you to pay it, and the offer is a signal about how the rest of the invoice will be handled. We cover the pattern in our guide to spotting a storm-chaser roofing scam.
Get a quote you can actually line up against the others
Benchmark Roofing and Construction has worked out of the same Garland office since 2008. We write quotes with the line items above spelled out, so you can hold ours next to anyone else's and see exactly where the numbers differ. If you already have two bids and want a third that makes the comparison easier, we will come look. Free, and we will tell you honestly if one of the quotes you have is the better deal. We serve Garland, Rowlett, Plano and the rest of North Dallas.