How to Properly Prepare Your House for Exterior Painting
By Husky Pro Painting · Redding, CA · Updated June 2025 · 7 min read
Ask any professional painter what separates a paint job that lasts 10 years from one that starts peeling in 3, and the answer is always the same: surface preparation. The paint itself is almost secondary. In Redding's climate — extreme heat, UV, and dry winds — shortcuts in prep get exposed fast.
Industry rule: Proper surface preparation accounts for 80% of a paint job's lifespan. We spend more time prepping than painting on every single job.
Step-by-Step: How We Prep Every Home
1
Inspection — Identify Problem Areas First
Before touching a pressure washer, walk the entire perimeter and identify: peeling or blistering paint, wood rot or soft spots, gaps around windows, doors, and trim, cracks in stucco or siding, and any areas with mold or mildew staining. Mark everything that needs attention before washing — water can push moisture into gaps that aren't yet sealed.
2
Power Washing
Every surface gets power washed at the right pressure for its material. Stucco and masonry: 1,500–2,000 PSI. Wood siding: 1,000–1,500 PSI (too much pressure splinters and raises the grain). The goal is to remove all dirt, chalking, loose paint, cobwebs, and biological growth. In Redding, dust and pollen buildup is significant — skipping this step means painting over contamination.
Critical: Allow 24–48 hours of drying time after washing before any paint or primer is applied. Painting over damp surfaces is one of the most common causes of early paint failure.
3
Scraping and Sanding
Any paint that's peeling, bubbling, or not firmly adhered gets scraped off. We use hand scrapers for detail areas and pole scrapers for flat surfaces. After scraping, edges are feathered with sandpaper so there's no visible ridge between scraped and intact paint. This step is tedious but non-negotiable — paint will not bond over loose material.
4
Wood Rot Repair
Soft or rotted wood must be repaired before painting — paint does not fix rot, it hides it temporarily. Minor rot is treated with wood hardener and filled with two-part epoxy filler. Severe rot requires board replacement. In Northern California, fascia boards and window sills are the most common rot locations.
5
Caulking All Gaps and Seams
Every gap around windows, doors, trim, and siding joints gets caulked with a high-quality paintable exterior caulk (50-year rated). This is a waterproofing step, not just cosmetic. Gaps allow water infiltration that will blister paint from the inside out. We use flexible caulk — rigid caulk cracks as the house expands and contracts in Redding's temperature swings.
6
Masking and Protection
Everything not being painted gets protected: landscaping covered with drop cloths, windows taped with painter's tape and plastic sheeting, brick or stone accents masked, light fixtures and hardware removed or bagged. This step is what separates a professional job from a sloppy one.
7
Priming
Bare wood, stucco patches, repaired areas, and any surfaces with staining get primed before the finish coat. We use spot priming at minimum, full prime on houses with extensive bare areas or surface changes. Primer improves adhesion and gives you a uniform base for the finish color.
Prep Time by Home Type
| Home Type | Surface Condition | Prep Time |
|---|---|---|
| Stucco, good condition | Minimal peeling | 1 day |
| Stucco, fair condition | Some cracking, chalking | 1–2 days |
| Wood siding, good condition | Minor peeling | 1–2 days |
| Wood siding, poor condition | Heavy peeling, rot spots | 2–4 days |
| Any home, never painted | Raw surface | 2–3 days |
What Happens if You Skip Prep
We've re-painted homes where the previous contractor skipped steps. Here's what poor prep looks like within 1–3 years:
- Peeling paint along trim and window edges (skipped caulking or insufficient adhesion)
- Bubbling on south-facing walls (moisture trapped under paint on damp or dirty surfaces)
- Flaking over stucco patches (new paint applied without primer)
- Visible lap marks (sanding not done after scraping)
- Paint peeling in sheets (painted over chalking without washing)
When you get multiple quotes and one is significantly cheaper, it's almost always because they're cutting prep. The paint costs about the same for everyone — the difference is labor, and prep labor is where corners get cut.
Frequently Asked Questions
How long does it take to prep a house for exterior painting?
For an average home in Redding, preparation takes 1–2 days depending on condition. Homes with heavy peeling, wood rot, or extensive caulking needs may require 2–3 days of prep before any paint is applied.
Can I skip primer when repainting my house?
You can skip primer if the existing paint is in excellent condition and you're using a paint-and-primer formula. However, on bare wood, stucco repairs, or stained surfaces, primer is essential for proper adhesion and durability.
Should I power wash my house before painting myself?
Yes — but be careful with pressure and distance, especially on wood siding. Too much pressure raises the grain and causes splinters that show through paint. Always allow full drying time (24–48 hours in Redding's climate) before applying any coating.
Want It Done Right the First Time?
Our crews follow every prep step on every job — no shortcuts. That's why we back our work with a 5-year workmanship warranty.
Request Free Estimate →Or call us at (530) 777-6573
Related: How Much Does Exterior Painting Cost in Redding CA?