The questions to ask before hiring a window cleaning company should cover three things: what the quote includes, how the crew will do the work, and what happens if something goes wrong. A company that answers clearly on all three is usually a company that does clear work. The questions below will help you learn how to choose a window cleaning service with confidence, whether the job is a single family home or a commercial property.
Questions about scope and pricing
Most disappointment after a window cleaning visit comes from scope, not from the glass itself. One person expects screens washed and tracks vacuumed, while the company priced glass only. Ask these questions so the scope is settled before anyone picks up a squeegee.
First, ask exactly what is included in the quote. Does it cover interior glass, exterior glass, or both? Are screens removed and washed, or only brushed in place? Are tracks vacuumed and wiped? Are sills and frames wiped down? Get each answer in writing. Second, ask how the company counts windows. Some companies price per window unit, others per pane, and French panes with divided lites can change the count a lot. Third, ask what is not included and whether there are extra charges for anything, such as hard water stain treatment, construction debris, or paint overspray. Finally, ask whether there is a minimum charge, since very small jobs may carry one.
A company that is comfortable with these questions is a company that has defined its service. Vague answers at this stage tend to stay vague on the day of the visit.
Questions about method and equipment
How the glass is cleaned matters as much as whether it is cleaned. Ask how the crew will reach your upper windows. Ladders suit many homes. Water fed poles with pure water systems clean high exterior glass from the ground and leave no residue behind because the water is filtered before it touches the glass. Taller buildings may need lifts or rope access. The company should be able to name the method it plans to use for your property and explain why it fits.
Ask what solutions and tools are used on your type of glass. Tinted, coated, low e, and leaded glass need gentler methods than standard glass, and a knowledgeable company will say so without being asked twice. Ask how the crew protects your property: drop cloths and shoe covers inside, care around landscaping and siding outside. These questions sound basic, but the answers tell you whether the company plans its work or improvises it.
Questions about the crew and what happens after the visit
Ask who will actually be at your property. Will the crew be company employees or subcontractors? Will the same crew return for repeat visits? You do not need life stories, but you should know who is coming through your door. Ask about insurance directly. A professional company carries coverage for the work it does and will say so plainly.
Then ask the question many people forget: what happens if a window is missed or spotted after the crew leaves? Every company misses a spot occasionally. What matters is the response. Look for a clear process, such as a return visit to correct the issue, rather than defensiveness. Ask the same about damage. Glass, screens, and sills can be scratched or broken by careless work, and a professional company has a plan for making it right.
A quick checklist of the most revealing questions
If you only have time for a short conversation, these questions reveal the most about a company. The table shows what each question tells you and what a reassuring answer sounds like.
| Question to ask | What it reveals | A good answer sounds like |
|---|---|---|
| What exactly is included in the quote? | Whether the scope is defined or assumed | A written list covering glass, screens, tracks, sills, and frames |
| How do you count windows? | Whether the price matches the real workload | A clear method, per pane or per unit, explained before pricing |
| How will you reach my upper windows? | Whether the crew is prepared and safe | Ladders, water fed poles, or lifts chosen for your property |
| What do you use on coated or tinted glass? | Whether the crew understands glass types | Gentler methods named for delicate glass |
| Are you insured? | Whether problems are handled professionally | A direct yes with coverage described |
| What if a window is missed? | Whether the company stands behind its work | A clear process for returning to fix it |
Extra questions for commercial properties
Commercial work adds scheduling and coordination, so a few extra questions pay off. Ask whether the crew can work outside your business hours, such as early morning, evening, or weekends. Ask who your point of contact is for schedule changes. Ask how recurring visits are handled and whether the same crew returns, since familiarity with your building speeds up each visit. Businesses with lobbies, partition glass, or entrance doors should ask whether interior glass beyond the windows is covered. Our commercial window cleaning is built around these needs, with visits planned around your hours and scope defined per visit.
For homes, the same discipline applies on a smaller scale. Our residential window cleaning covers interior and exterior glass with screens, tracks, and sills, and you can see every option on our services page. Whatever property you manage, ask the questions, get the answers in writing, and hire the company that answers best.
Red flags that should make you pause
Some signs should make you slow down before booking. Be cautious of any company that will not put the scope in writing, since a verbal promise is hard to enforce when the glass does not match your expectations. Be cautious of quotes given without a single question about your windows, your screens, or your access, since the price is a guess and guesses get revised upward on the day. Watch for pressure to decide on the spot, demands for full payment before the work begins, or a price far below every other quote you received. A very low price usually means a smaller scope, rushed work, or both. Also note how the company communicates. Slow, vague, or dismissive answers before you have paid tend to continue after you have paid. Trust the pattern you see during the quoting stage, because it usually predicts the visit.
Good questions lead to good results. Put these questions to us and judge the answers for yourself. Contact Window Cleaning Company for a free quote with the full scope in writing, and see how a careful company responds.