Every summer we get called to repaint houses that were painted three years ago. The paint isn't the problem — it almost never is. What fails is everything that happened, or didn't happen, before the first coat went on. This guide covers what actually determines how long a paint job lasts, so you can judge any bid — including ours — with clear eyes.
1. Prep is 80% of the job
Paint bonds to what's under it. If that's chalky old paint, mildew, or bare weathered wood, the new coat fails with it. A proper prep pass means washing, scraping every failing edge, sanding glossy areas dull, spot-priming bare wood, and caulking open joints. It's slow, unglamorous work — which is exactly why low bids skip it.
"Walk me through your prep, step by step." A pro will answer in specifics — grits, primers, dry times. A vague answer here predicts a short-lived finish.
2. Two coats isn't upselling
One heavy coat and two proper coats use nearly the same paint — but they age completely differently. Two thin coats cure harder, cover more evenly, and give UV and weather twice the film to work through. Manufacturers' warranties assume two coats; a single-coat bid quietly voids them.
"The cheapest paint job is the one you only pay for once."
Casey Wissink · Founder, CW Paint
3. Timing beats hustle
Paint applied onto a damp surface, in direct hot sun, or too close to a cold night doesn't cure — it just dries. In Central Wisconsin that means exteriors belong between late May and early October, and a crew that watches the dew point, not just the calendar. A painter willing to slide your start date a day for weather is protecting your finish, not padding their schedule.
4. The checklist
Before you sign any painting bid, make sure it answers these in writing:
- Exact prep steps, surface by surface
- Number of coats, and the specific product line
- Proof of license and insurance
- A fixed, itemized price — not an estimate that can grow
- What happens if something isn't right afterward
