Key takeaways
- The surface must be clean, sound and dry.
- Allow 24 to 48 hours to dry after pressure washing.
- Respect the manufacturer’s temperature and humidity range.
Wash
Pressure washing removes dirt, mildew and peeling paint. On vinyl or aluminum, a diluted bleach solution can remove mildew, followed by a thorough rinse. Then let the house dry for 24 to 48 hours.
Scrape, repair and sand
- Scrape peeling or blistering paint.
- Fill holes and cracks with an exterior-grade product.
- Sand repaired surfaces smooth.
- Replace rotten wood instead of painting it.
Prime
Prime bare wood, repairs and difficult surfaces. All repaired areas must be primed before the topcoat.
Check the weather
- Avoid painting right after rain, in fog or when rain is forecast.
- Most manufacturers set a temperature range: read the label. Some newer products can go on from about 2 °C, while conventional latex often needs warmer.
- Avoid full sun on a very hot surface.
- Aim for stable conditions for at least 48 hours after application.
Two coats
Two coats are the norm. Let the first dry completely, usually a few hours, before applying the second.
Frequently asked questions
- How long after rain can you paint?
- Wait until the surface is completely dry, often 24 to 48 hours depending on weather and material.
- Can new masonry be painted right away?
- No, it generally needs to cure for about 30 days, following the manufacturer’s recommendations.
