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. Many manufacturers' warranties and coverage specs assume two coats.
"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
