How to Prepare Your Home for Exterior Painting

Step 1: Start With a Thorough Inspection

Before anything else, walk around your home and take stock of what you're dealing with. Look for:

• Peeling, cracking, or bubbling paint
• Areas where caulk has cracked, shrunk, or separated
• Wood rot around windows, doors, fascia boards, and soffits
• Mold or mildew (often looks like dark staining on the surface)
• Missing or damaged caulk around penetrations (pipes, electrical boxes, AC lines)
• Loose or damaged siding boards or trim

Make notes or take photos of every problem area. These all need to be addressed before paint goes on — not patched over with paint.

Step 2: Pressure Wash Every Surface

Paint will not adhere properly to a dirty surface. Mold spores, mildew, dirt, pollen, and old chalking all act as barriers between the new paint and the substrate. Every exterior painting project — without exception — should begin with a thorough pressure wash.

Important nuance: pressure washing done incorrectly can damage your siding. The goal is to clean the surface, not blast the wood grain. A professional painter will know the right pressure and distance for each surface type. Wood siding requires lower pressure than brick or concrete block.

After washing, allow the surface to dry completely — usually 24 to 48 hours depending on humidity and temperature. Painting over wet or damp surfaces leads to blistering and adhesion failure.

Step 3: Scrape and Sand All Loose Paint

Any paint that isn't firmly bonded to the surface must come off before new paint goes on. Use a paint scraper or wire brush to remove all loose, peeling, or flaking paint. Follow up with medium-grit sandpaper to feather the edges of remaining paint so they blend smoothly.

If you encounter lead paint (common in homes built before 1978), stop and contact a professional. Lead paint removal requires specific safety protocols and may require a certified contractor under EPA RRP rules.

Step 4: Repair Wood Rot and Damaged Surfaces

Wood rot is extremely common in Florida's humid climate, especially around:

• Window sills and frames
• Fascia boards and soffits
• Door frames and thresholds
• Deck ledger boards attached to the house

Painting over rot is one of the most common mistakes we see when homeowners have had previous contractors cut corners. Rot will continue to spread under the paint and the new coat will fail quickly. Rot must be cut out and replaced — or repaired with a two-part epoxy wood filler — before painting begins.

Step 5: Caulk Every Gap and Crack

Caulk serves two critical functions in an exterior paint job: it seals the surface against water infiltration, and it creates a smooth, seamless finished appearance. Every gap, crack, and seam should be caulked before paint is applied.

Pay special attention to:

• Where siding meets window and door frames
• Corners where two siding boards meet
• Around all penetrations — pipes, wires, vents, AC lines
• Gaps in trim boards, fascia, and soffits
• Any joints or seams in the siding

Use a high-quality paintable caulk — not silicone (which paint won't stick to) and not the cheapest caulk on the shelf. Allow caulk to fully cure per the manufacturer's instructions before painting over it.

Step 6: Prime Bare and Repaired Surfaces

Any area where you've removed paint, repaired wood rot, or patched damage must be primed before the topcoat is applied. Primer seals the surface, improves adhesion, and prevents bleed-through from stains, tannins (in wood), and rust.

On a full exterior repaint, many professional contractors will prime the entire surface — especially when switching paint types or colors, or when the existing surface is in rough condition. Premium exterior coatings like Sherwin-Williams Duration are designed to be self-priming on previously painted surfaces in good condition, but bare or repaired areas always get dedicated primer first.

Step 7: Protect What You're Not Painting

Before any paint goes on, mask and protect everything you don't want painted:

• Windows and glass — plastic sheeting or professional masking paper
• Exterior light fixtures, outlets, and junction boxes
• HVAC equipment and utility meters
• Plants, shrubs, and landscaping adjacent to the house
• Driveways and walkways

What a Professional Crew Brings to All of This

All of the above — pressure washing, scraping, rot repair, caulking, priming, masking — is what differentiates a high-quality exterior painting project from a cosmetic cover-up. At Seminole Ventures Painting, every project includes every one of these steps. We don't skip prep to lower a bid. We price the job to do it right.

If you're in Tallahassee, Leon County, or surrounding North Florida areas and ready to get started, we'd love to come out for a free estimate.