A common question is, “Can you just paint over this?” Sometimes the answer is yes. Sometimes it’s a firm no.
The difference comes down to one thing: is the wood still sound? Here’s how I think about it, and how you can tell before anyone gives you a quote.
What a painter can fix
Painters handle a lot of minor damage as part of normal prep. That includes:
- Small cracks and hairline splits in the surface
- Shallow dings and dents
- Nail holes and small gouges
- Gaps at joints and trim lines (that’s what caulk is for)
- Surface checking in wood that is still solid
- Minor patching with filler before primer
If the wood is firm and the damage is on the surface, repair and repaint is usually the right call. Good prep matters more than anything here. Filler and caulk have to be the right type, and the area has to be primed before the paint goes on.
What needs replacing
Rotted wood is the big one. Rot means the wood fibers have broken down from long exposure to moisture. Paint can hide it for a while. It can’t bring the wood back.
Here’s how to check. Take a screwdriver and press the tip into the damaged spot, gently. Sound wood resists. Rotted wood feels soft or spongy, and the tip sinks in or the wood crumbles.
Other signs that replacement is the better route:
- Boards that are warped, split through or loose
- Soft wood at the bottom of door frames, window sills and fascia
- Damp or dark areas that keep coming back after cleaning
- Trim that has pulled away from the wall
- Siding with holes, or pieces that crumble when touched
Rotted wood generally needs to be cut out and replaced. That’s usually work for a carpenter or a siding contractor, and not something a painter does. I’d rather tell you that up front than paint over a problem that comes back.
Why the cause matters
Wood rots because water gets in. If you replace a board but never fix the reason it got wet, the new board can fail too. Look for the source:
- Failed caulk around windows and trim
- Gutters that overflow or leak
- Sprinklers that spray the siding
- Soil or mulch piled against the bottom of the wall
- Flashing or seams that no longer shed water
Coastal air makes this worse. Salt and moisture hang around in San Diego, especially close to the water, so paint and caulk need to be in good shape to keep the wood protected.
So who does what?
I want to be clear about our role. We’re painters. We do exterior and interior painting, staining, plaster and drywall repair, pressure washing, historical restoration, and more. We don’t do carpentry or siding replacement.
Here’s what we can do for you:
- Look at the damage with you and help figure out which problems are paint-level and which are repair-level.
- Tell you which spots look like they need a carpenter or siding contractor before paint goes on.
- Coordinate the paint after the repairs are done, so the new wood is primed and finished to match the rest of the house.
That order matters. Repairs come first. Prime and paint come after. If you paint first and cut out boards later, you end up painting twice.
A note on older homes
If your house was built before 1978, the old paint may contain lead. That’s a general caution. Don’t sand or scrape it dry. Before any repair or prep, ask whoever is doing the work how they handle lead-safe practices.
When to call
Not sure whether you’re looking at a paint job or a repair job? Call me at (858) 333-2396 for a free estimate. You can also reach us through the contact page. I’ll take a look, tell you what I see, and help you plan the next step. You can read more about our exterior services or browse everything on our services page.
FAQ
Can paint stop wood rot?
No. Paint protects sound wood from moisture, but it can’t repair wood that has already rotted. Soft, crumbly wood needs to be cut out and replaced. Painting over it hides the problem for a short time, and then the paint fails again. The cause of the moisture should be fixed too.
How can I tell if trim is rotted?
Press a screwdriver tip gently into the wood. Firm wood resists. Rotted wood feels soft or spongy, and the tip sinks in or pieces crumble away. Check the bottom of door frames, window sills and any spot where water sits. Peeling paint over soft wood is a strong warning sign.
Does Ironwood Finishes replace siding or trim?
No. We’re painters, so we don’t do carpentry or siding replacement. We can help you figure out which problems need repair and which need paint, and we can coordinate the painting after a carpenter or siding contractor finishes the repairs. We also handle surface patching, caulking, priming and painting.