Most “questions to ask a contractor” checklists are generic enough to apply to a roof, a driveway, or a kitchen remodel. These ten are specific to windows and doors — and every one of them has an answer you can actually check, not an answer a salesperson can talk their way around.
Window replacement is unusual among home projects. The product is manufactured to order weeks before anyone shows up at your house, the install crew is cutting into the weather barrier of your home, and most of the workmanship you’re paying for gets covered by trim the same day it’s performed. You cannot inspect a good installation after the fact the way you can inspect a paint job. That is exactly why the questions below matter more here than almost anywhere else.
We’ve included how Aspen Bravo answers each one. Use them as a benchmark — hold every bid you’re considering to the same standard, including ours.
1. Exactly what product am I buying — manufacturer, line, and glass package, in writing?
Why it matters: This is the single most common place a window quote quietly changes on you, and almost nobody asks it directly.
Most manufacturers build several tiers under the same brand name. “We install [Brand]” is not a specification — it’s a category that can span an economy line and a premium line with meaningfully different frames, reinforcement, insulation, and glass. A quote that names only the brand leaves room for the order to be placed against a cheaper line than the one you were shown in the showroom, and you will not be able to tell by looking at the finished install.
The glass package is where it gets even less visible. Two windows that look identical can have completely different coatings and performance ratings, and glass is a large share of what you’re paying for.
What a good answer sounds like: The manufacturer, the specific product line by name, the glass package, and the performance ratings for the exact unit being quoted — all on the quote itself, not described verbally. A contractor who’s proud of what they’re selling will write it down without being asked twice.
Ask to see the label. Every certified window carries a National Fenestration Rating Council (NFRC) label with its U-factor and solar heat gain coefficient, and an ENERGY STAR label showing which climate zone it qualifies for. Ask to see both for the unit you’re actually being quoted — not the brochure, not the showroom display. A window certified for a northern climate is not automatically the right window for a Southeast home, and the label is how you check.
How Aspen Bravo answers: Aspen Bravo installs ProVia, which builds four window lines — ecoLite™ (economy all-vinyl), Aspect™ (mid tier, with INNERGY® thermal reinforcements), Endure™ (premium vinyl with graphite foam frame insulation), and Aeris™ (wood-clad interior). Your quote names the line and the glass package, and we’ll show you the NFRC and ENERGY STAR labels for the exact units we’re proposing. If you want to move up or down a tier, we’ll show you what changes and what it costs before anything is ordered.
For how the ratings on that label actually translate into money, see are replacement windows worth it.
2. Is windows-and-doors your specialty, or one of several trades you do?
Why it matters: A crew that installs windows every working day of the year develops pattern recognition a generalist can’t match. They’ve seen the rotted header hiding behind the trim in a 1960s ranch. They know how a brick-mould opening in a mid-century home behaves differently from a wood-sided one. They’ve flashed a thousand sills and know which shortcuts come back as callbacks in three years.
A remodeler splitting time across kitchens, roofing, siding, and decks might install a few dozen windows a year. Repetition is the single cheapest form of quality control in this trade.
What a good answer sounds like: An actual volume number, and a description of what the crew does when they hit something unexpected — because they will.
How Aspen Bravo answers: Windows and doors are all we do. We don’t sell them as an add-on to another trade, and we don’t subsidize a slow window season with roofing work. It’s the whole business.
3. What’s the workmanship warranty — separate from the manufacturer’s product warranty?
Why it matters: This is the question that separates serious contractors from the rest, and it’s the one most homeowners conflate. There are two entirely different warranties on a window replacement:
- The product warranty covers the window itself — the vinyl, the glass seal, the hardware. It comes from the manufacturer.
- The workmanship warranty covers the installation — flashing, sealing, shimming, insulation, trim. It comes from the contractor.
Nearly every leak, draft, or operational complaint in the first several years traces back to installation, not to the window. A manufacturer warranty does nothing for you there. If a contractor only talks about the manufacturer’s coverage when you ask about warranty, they’re answering a different question than the one you asked.
What a good answer sounds like: Two distinct warranties, described separately, with the terms of each in writing before you sign.
How Aspen Bravo answers: Both, and we keep them clearly separate.
Product warranty (ProVia): Aspen Bravo installs ProVia windows and doors, which carry a Lifetime Limited Transferable Warranty. ProVia’s coverage warrants the rigid vinyl against chipping, cracking, peeling, pitting, and blistering for as long as you own and live in the home, with coverage extending to vinyl, hardware, and glass across their window lines. The warranty transfers to one subsequent owner of the home, provided the transfer is completed within 30 days of the ownership change through ProVia’s warranty registration. Full terms are published on ProVia’s public site — we encourage you to read them yourself rather than rely on our summary.
Workmanship warranty (Aspen Bravo): We back our installation labor with a lifetime workmanship warranty. If our work is the cause, we come back and fix it. That commitment isn’t a sales position for us — it’s downstream of why the company exists. Every project we complete funds our Veteran Ranch initiative, and a callback we have to eat is a project that didn’t fund the mission. Doing it right the first time is the business model, not a slogan.
Get both warranties in writing before you sign anything, from us or from anyone else. See our warranty page for the full detail on what each one covers, what neither covers, and how a claim actually works.
4. Who actually performs the install — employees or subcontractors?
Why it matters: There’s nothing inherently wrong with subcontracting. There is something wrong with a company that won’t tell you which it is, or that sells you on “our expert crews” and sends a truck with a different company’s name on the door.
The real question underneath this one is accountability: when something needs fixing in year three, is there a chain of responsibility that leads back to the company that sold you the job?
What a good answer sounds like: A straight answer either way, plus a clear explanation of who inspects the work and who owns the warranty.
How Aspen Bravo answers: Every install gets signed off by Aspen Bravo — not by whoever installed it. Depending on the market and the project, your installation may be performed by an Aspen Bravo crew or by a vetted local installation partner. What never changes is who signs off on it. An Aspen Bravo quality control inspector — our employee, not the installing crew’s — walks every single installation before it’s called complete. If anything isn’t right, it gets corrected before the crew leaves your property. Not scheduled for a callback. Not “we’ll send someone out next week.” Before they leave. And the workmanship warranty is held by Aspen Bravo either way. You are never chasing a subcontractor over a window we put in.
We publish the specification our inspector works from, step by step, so you can hold us to it: the Aspen Bravo Installation Standard. Ask any other contractor for the equivalent.
If you ask another contractor this question and get a vague answer, ask the follow-up: “Who inspects the work, and who holds the warranty?” That’s the part that actually affects you.
5. What’s included in the quoted price, and what triggers a change order?
Why it matters: Structural framing damage discovered mid-install is the single most common source of surprise cost on a window replacement. It’s genuinely unpredictable — nobody can see a rotted sill, jamb, or header until the old unit comes out. Rot is found in a meaningful share of older-home replacements, and repairing it can add days to a project.
The problem isn’t that change orders exist. It’s that some contractors quote low knowing they’ll find something, then present the change order as a surprise on day one when you have a hole in your wall and no leverage.
What a good answer sounds like: A line-item quote, a written change-order policy, and — ideally — a ballpark rate for common framing repairs quoted before work begins.
Ask specifically:
- Is disposal and haul-away included?
- Are interior and exterior trim, caulk, and paint touch-up included?
- What’s the per-opening rate if rot is found?
- Do I approve change orders in writing before work continues?
- Does the price include permits, if my jurisdiction requires them?
How Aspen Bravo answers: Our quotes are line-itemed so you can see exactly what you’re buying. If we find framing damage after the old unit is out, we stop, show you the condition, and get your written approval before proceeding — with pricing you were told about up front, not invented on the spot. No corporate markups, and no discovery-day arithmetic.
6. Can I see recent local projects, not just stock photos?
Why it matters: Manufacturer-supplied photography is beautiful and tells you nothing about the contractor. What you want is work performed in your area, in the last year, on homes built like yours.
Local matters more than it sounds. A crew that works constantly in a given market has handled the specific mix of housing stock there — mid-century ranches, older brick homes, newer subdivisions — in that climate. Photos from three states away don’t demonstrate that.
What a good answer sounds like: Recent addresses (or at least neighborhoods), close-up photos of the trim and seal work rather than wide shots, and references you’re allowed to call.
How Aspen Bravo answers: See our reviews and project gallery for recent work across our service areas. If you want to talk to a homeowner in your area who’s used us, ask your estimator — we’ll connect you.
7. How do you handle disposal of the old windows?
Why it matters: This is a small question that reveals a larger pattern. Haul-away of old units and job-site debris should be baked into the base quote as a matter of course. When it shows up as a separate line item — or worse, as a day-of surprise — it usually means the whole estimate has been shaved thin to look competitive, and other costs are hiding elsewhere.
What a good answer sounds like: “It’s included,” without a pause.
How Aspen Bravo answers: Included. Old units, packaging, and job-site debris are hauled off as part of the project. We also clean up daily rather than letting debris accumulate across a multi-day install — you’re living in the house while we work.
8. What financing options do you offer, and what’s the real APR?
Why it matters: Home improvement financing is where a lot of buyers get quietly hurt. Two structures deserve particular scrutiny:
Deferred-interest promotions. “No interest if paid in full within 18 months” is not the same as 0% interest. If any balance remains at the end of the promotional window, interest is typically charged retroactively on the entire original amount from day one. Ask directly whether the promotion is deferred interest or true 0%.
Dealer fee buy-downs. Low advertised rates are often paid for by a fee the contractor absorbs and then builds into the project price. The financing looks cheap; the windows cost more. Ask what the cash price is versus the financed price.
What a good answer sounds like: The actual APR, the term, the total amount you’ll repay, and a clear statement of whether it’s deferred interest or true 0%. Get an amortization schedule if you can.
How Aspen Bravo answers: $0-down financing is available, and we’ll show you the real numbers — rate, term, and total repayment — before you commit to anything. See our financing page for current options.
9. How long does a typical project take, start to finish?
Why it matters: Homeowners consistently underestimate the calendar and overestimate the disruption. Both misunderstandings cause problems — people schedule projects too late for the season they wanted them done in, and they take unnecessary time off work for an install that doesn’t require it.
The most useful thing to understand is that installation is the short part. The long part is manufacturing.
A realistic timeline for a full 4-bedroom home (typically 15–25 openings, depending on architecture and square footage):
| Phase | Typical duration | What’s happening |
|---|---|---|
| In-home consultation & measure | 1 visit, 1–2 hours | Final measurements taken opening by opening |
| Manufacturing & delivery | 6–8 weeks | ProVia builds every unit to order — nothing comes off a shelf |
| Installation | 2–3 working days | A professional crew averages roughly 10–12 openings per day |
| Final walkthrough & QC | Same day as completion | Inspection, operation check, cleanup |
| Total, start to finish | Roughly 8–10 weeks | Dominated by manufacturing, not install |
What extends it: Framing or rot repair discovered mid-install can add one to three days. Large or specialty units — bays, bows, custom shapes, oversized picture windows — take longer to install and sometimes longer to build. Peak season ordering pushes manufacturing toward the upper end of the range. Second-story and difficult-access openings slow a crew down.
What a good answer sounds like: A contractor who separates lead time from install time and gives you a range for each. A contractor who promises a whole-house install in a single day is either working on a very small home or planning to rush the part of the job you can’t inspect afterward.
How Aspen Bravo answers: For a typical 4-bedroom home, plan on roughly 8 to 10 weeks from signed agreement to final walkthrough, with 2 to 3 days of actual crews-in-your-house time. Your estimator will give you a specific window for your project after the final measure, and we’ll tell you before we start whether anything about your home is likely to push it longer.
10. What happens if I have a problem after installation?
Why it matters: “We stand behind our work” is the answer every contractor gives, and it commits them to nothing. What you want is a name, a number, and a response-time expectation.
The failure mode here isn’t usually a company that refuses to help. It’s a company where the salesperson who was very responsive during the sale is no longer the person who answers, and there’s no defined path to anyone who can act.
What a good answer sounds like: A specific point of contact for post-install service, a timeframe for response, and a description of what happens on a warranty claim — who comes out, how fast, and who pays.
Ask specifically:
- Who do I call — the salesperson, a service line, or the office?
- What’s your target response time on a service request?
- Does a warranty visit cost me anything?
- How do I file a claim against the ProVia product warranty, and will you help?
How Aspen Bravo answers: You call our office at (865) 770-3100. Warranty service on our workmanship is handled by our in-house team at no cost to you. If the issue is with the product rather than the install, we help you file with ProVia rather than handing you a phone number and wishing you luck. Our name is on the project either way.
Red Flags: How to Spot a Bad One
Any single item below can have an innocent explanation. Two or more together is a pattern.
Pressure to sign today. A “today only” discount that evaporates when you ask for 48 hours to think is a sales tactic, not a price. Legitimate seasonal pricing survives a night’s sleep.
No line-item breakdown. A single lump-sum number with no itemization makes it impossible to compare bids or to know what you’re actually buying. It also makes it easy to quietly downgrade the product between the quote and the order.
Won’t name the product line in writing. See question 1. A quote that says only the brand — not the specific line and glass package — is a quote that can be filled with something cheaper than what you were shown. This one is close to disqualifying on its own.
A quote that’s dramatically lower than everyone else’s. Windows have a real material cost. A bid well below the field usually means a lesser product line, a thinner install (fewer fasteners, less insulation, cheaper flashing), or a change order already planned.
Large deposit demanded up front. Custom-order product justifies a reasonable deposit. A demand for most of the project cost before anything is manufactured does not.
Vagueness about who’s doing the work. See question 4. The answer can be “employees” or “subcontractors” — it should never be a dodge, and it should always come with a straight answer about who inspects the work.
The warranty only exists verbally. If it isn’t in the contract, it isn’t a warranty.
No written change-order policy. See question 5. This is the mechanism by which a low bid becomes an expensive project.
