Questions to Ask a San Antonio Window Company Before You Sign

Start with the seal warranty

Most people start with price. Start with the glass seal instead. It is one of the hardest-working parts of a window in this climate, and the warranty behind it can mean the difference between a repaired window in year eight and a bill in year eight. The answer also tells you quickly what kind of company is sitting across from you.

How to read a window warranty: find these four numbers

Every warranty in this market answers four questions somewhere, whether it is a one-page document from a standard installer or a booklet from a premium program. Ask someone to show you the answers in the actual document.

1. Years on the glass unit and its seal.

Do not let the conversation drift to the frame. The sealed unit is the part working against Texas heat. The strongest coverage sold in this market runs 20 years on the glass and seal. Weaker documents cover it for much less time or hide it beneath a headline number that applies only to the frame.

2. Prorated or not.

Unprorated coverage has the same value in year 15 as it did in year 1. Prorated coverage shrinks over time. By the time the seal fails, a lifetime warranty may amount to little more than a discount. One word in the document can make an enormous difference.

3. Years on the labor.

Coverage for the part does not automatically cover the person replacing it. On a fogged glass unit, labor may cost more than the glass itself. The strongest programs warranty the installation work. Many documents cover labor for a year or two, or do not cover it at all. If nobody can point to the labor term, assume you do not have one.

4. What happens at sale.

The strongest coverage transfers automatically to the next owner. Typical coverage may transfer once with a fee and deadline, or not transfer at all. If you may sell the house someday, this clause has real value.

One fact connects the whole page: improper installation voids most window warranties. Choosing the warranty and choosing the installer are really the same decision.

The questions

1. How is the glass seal warrantied, for how long, and is it prorated?

This is the question that matters most in a Texas climate. A good answer includes specifics: years, proration, parts and labor, and transfer terms. You know the ceiling because 20 years of unprorated coverage with labor included exists in this market. Measure every answer against it. If the salesperson keeps returning to the frame warranty, ask once more. Then take the evasion as information.

2. Is the quote itemized per window?

Per-window pricing is standard at every tier. It lets you compare companies and make choices within your own house, such as upgraded glass on the west-facing openings and standard glass on the shaded north side. A whole-house lump sum hides those choices. Ask for the itemization.

3. How long is this price good for?

Thirty days in writing is a fair, normal request. A price that cannot last a month was built to force a same-night decision. The red-flags page explains how that sales tactic works.

4. Who installs, employees or subcontractors, and who answers for the labor later?

Employees and subcontractors can both do good work. What matters is the line of responsibility. Who trained the crew? Who checks the installation? Who answers the phone in year two if a draft appears? Improper installation voids most window warranties, so the crew is not a side issue. A company with clear answers has thought beyond installation day. Evasion here can outweigh several polished answers elsewhere.

5. Who pulls the San Antonio permit, and have you taken windows through historic review?

San Antonio requires a permit even for same-size window replacement. A good company should treat the simple over-the-counter permit as a routine part of the job. If your house is in King William or Monte Vista, ask whether the company has taken a window project through the Certificate of Appropriateness process. Real experience with historic review is hard to fake in a follow-up question.

6. Is the crew lead-safe certified for a pre-1978 house?

Much of San Antonio's housing, especially inside Loop 410, predates 1978. Federal rules require lead-safe practices when renovation disturbs old paint, and replacing a window can do exactly that. A careful company can answer the question and show you the certification. A blank look is an answer too.

7. Walk me through a seal failure in year eight. What exactly happens?

Warranty language can sound excellent until you need to use it. Make the question concrete. Who takes the call? Does the company replace the glass unit or the whole window? Is labor covered by then? What happens next? A company that regularly honors claims can describe the process in order. If the answer is only another summary of the warranty, the company has told you it does not have a claim process it can explain. The three stories below show why that matters.

8. One warranty or two, and who holds the labor side?

Most quotes split the coverage between the manufacturer and the installer. That is normal. It also means the labor warranty depends on one local company staying in business under the same name. Ask how long it has operated that way. Premium programs put the product and labor under one document from one accountable party, and that is part of what the premium price can buy. A split warranty can still be perfectly workable. Just know who owes you what, and read both documents before signing.

Three year-eight stories

The same thing happens in three houses eight years after installation. Fog appears between the panes of a west-facing bedroom window. Same failure. Three sets of paperwork. Three very different afternoons.

House one. The owner finds the warranty folder and makes one call. Five weeks later, a crew replaces the glass unit at no charge. The coverage was unprorated and included labor, so year eight worked just like year one. When the family sells the following spring, the remaining coverage transfers automatically and becomes a feature in the listing.

House two. The claim is honored exactly as written. That is the problem. The coverage was prorated, so the manufacturer pays a smaller share of the glass and none of the labor. The service visit costs more than the part. Nobody broke the agreement. The document worked exactly as designed, but nobody studied that design in year zero.

House three. The installer's phone number no longer works, and the labor warranty disappeared with the company. A manufacturer's inspector finds that the unit was installed out of square and never sealed correctly. The product claim is denied because improper installation voids most window warranties. The owner now needs a new unit and a new installer at full retail. That outcome began eight years earlier at the kitchen table, where questions 4 and 8 should have been asked.

None of these stories needs a villain. The difference is paperwork understood before signing or discovered eight years too late. Ten minutes spent finding the four numbers can show you which future a quote is buying while you can still change it.

The year-two caulk test

Here is the quieter version of the same lesson. Two years after installation, a draft appears around a couple of windows. The caulk has pulled away. That is a workmanship issue, not a product failure.

At one house, the company sends its own crew back because the same warranty covers both the glass and the labor. At the other, the subcontractor has moved on, the labor coverage ended at year one, and the company says caulk is homeowner maintenance. Same draft. Same caulk. Different paperwork on signing day. Questions 4 and 8 told both owners what they were buying. Only one asked.

Before you sign

Before you sign, ask for one sheet that shows the per-window prices, the material and glass package, insert or full-frame work for each opening, all three warranties, the permit plan, and how long the price remains valid. A serious company can provide it. The presentation is talk. The paper is the deal.