Four quick steps. Your numbers just need to be in the ballpark — we come out and measure everything precisely before any work.
Film prices per pane of glass, not per window unit. A double-hung "one window" is actually two panes — that's the most common slip-up when estimating. Quick reference:
Pick a method. Just give us a rough total if you've got it, or measure pane by pane for a tighter estimate.
Count panes (not window units) per the step 1 diagrams. The pane count drives our per-window minimum check.
Add a row for each distinct size — same-size panes multiply automatically. Great if you have 12 identical bedroom windows and 4 big picture windows.
Pick a specific film for a solid price, or let us match to your goal for a range.
Volume rate ($1–2/ft² off) kicks in past 250 ft² on standard tiers. Specialty films are quoted as a band — on-site visit locks the exact number.