How to Prepare Your Home for Exterior Painting (What We Do, What You Do)

Before we put a single brush on your house, there's a lot of prep work. A lot of it. Most paint jobs that fail early — peeling at two years, bubbling, cracking at the caulk lines — they didn't fail because of the paint. They failed because the surface wasn't ready. Here's exactly what happens before the first coat goes on, and what I need homeowners to handle on their end.

What We Handle — You Don't Need to Do This

We take care of all of this before we ever open a can of paint.

Pressure washing. We wash the entire exterior first. Dirt, algae, mildew, old chalking paint — it all has to come off. In League City and the Clear Lake area, homes build up mildew fast, especially on north-facing walls and any surface that stays shaded. If we don't wash it off, the new paint won't stick. Simple as that. We let the house dry 24 to 48 hours before we do anything else.

Caulking. Every gap around windows, doors, and trim gets caulked. That's where water gets in. Water behind your siding causes peeling — not from the outside in, but from the inside out. We use a paintable exterior caulk and work around every opening. It takes time, but skipping it means callbacks in a year or two.

Scraping and sanding. Any paint that's already peeling comes off. We scrape loose paint and sand down the edges so there's no ridge where the old paint stopped and the surface starts. If we paint over loose paint, it will peel again. We've been on jobs where painters skipped this step and the new paint started lifting in 6 months. That's not something we do.

Checking for wood rot. Before we start on any wood siding, trim, or fascia, we probe for rot. A lot of homes in South Shore Harbour and the older neighborhoods off FM 518 have wood that's been compromised by moisture over the years. If there's rot, I tell the homeowner before we start. We don't paint over rotted wood. It has to be repaired or replaced first, or we're just covering up a problem.

Priming. Bare wood gets primed. Patched spots get primed. Dark stains get a stain-blocking primer before the finish coat. Primer is what makes the paint stick and hold for years. We use Sherwin Williams Extreme Bond Primer or Duration Primer depending on what the surface needs. Primer matters more than most people think — it's not optional.

What You Should Do Before We Arrive

There are a few things we need homeowners to handle before we show up. It makes the job run smoother and protects your stuff.

• Move patio furniture, grills, and planters away from the walls. We need clear access all around the house. If things are stacked up against the siding, we can't prep or paint behind them properly.
• Take down outdoor decor. House numbers, flags, decorative shutters, light fixtures that come off easily — remove them if you can. We'll mask and protect what stays, but it's cleaner if removable items are off the wall.
• Trim back any bushes, shrubs, or vines touching the house. We need about 18 inches of clearance to work properly. If plants are pressed against the siding, we can't get behind them. This is one of the most common delays on exterior jobs.
• Move your cars out of the driveway on paint days. Overspray is minimal with our technique, but it's better to have vehicles away from the work area.
• Tell us about any spots that stay wet after rain. If you know of areas where water pools near the foundation, or places where you've noticed peeling or staining, let us know before we start. Those spots need extra attention.

How Long Does Prep Take?

On a typical house — average size, no major issues — prep takes half a day to a full day. That covers pressure washing, scraping, caulking, sanding, and priming.

If the house has a lot of peeling paint, or we find wood rot that needs repair, prep can run 1.5 to 2 days before we apply primer. That's not unusual on older homes or houses that haven't been painted in 12 or more years.

Some contractors will show up and start painting the same day they wash. That's a mistake. Paint applied over damp wood or wet caulk will fail. We always let the surface dry completely before the next step.

Why This Matters More Than the Paint Brand

I've seen expensive paint — Sherwin Williams Emerald, Benjamin Moore Aura — fail in 2 years because the surface wasn't properly cleaned or wasn't fully dry when we applied it.

I've also seen builder-grade paint hold up for 8 years because the prep was done right and the surface was ready.

Paint sticks to clean, dry, sound surfaces. That's the whole thing. If the surface isn't right, it doesn't matter what paint you buy or how much it cost per gallon.

This is also why we back our work with a 3-year warranty. We can offer it because we know the prep was done correctly on every job we do.

Timeline From Start to Finish

Here's what a typical exterior paint job looks like day by day:

• Day 1 Pressure wash the entire exterior. Let dry overnight — minimum 24 hours.
• Day 2 Scraping, caulking, sanding, patching, priming. This is the full prep day.
• Day 3–4 First coat of paint. Let dry fully. Second coat goes on the following day.
• Day 5 Detail work, touch-ups, cleanup. We do a walkthrough with you before we leave.

Total time for an average house: 4 to 5 days on site. Larger homes or houses with significant prep needs — heavy peeling, rot repairs, multiple stories — can run 7 to 8 days.

If you're ready to get started or just want to know what your house needs, call us. I'll come out, look at the house, and tell you exactly what prep it needs before we give you a price. No pressure, no obligation.