Guide
Interior painting in South Florida
Paint looks like the simple part of a remodel. In this climate, most of what decides how a room looks in two years happens before anyone opens a can.
Prep decides how the paint looks and lasts
Paint makers say this on the data sheet, not in a blog post. One of them notes that surface preparation which stops short of removing the old coating can shorten how long the finish holds up. That is a manufacturer telling you the prep sets the lifespan, not the paint.
The list underneath it is short and specific. Wash the surface contamination off and rinse it, then let it dry. Scrape and sand peeling or checked paint back to something sound. Sand glossy surfaces dull so the new coat has something to hold. Seal water, smoke, grease and pencil stains with a primer sealer so they do not read back through.
Cracks and holes get filled with patching paste and sanded smooth, and then the sanding dust comes off. Leave the dust and it ends up in the finish, where you will see it in raking light for as long as the paint is on the wall.
That prep is most of what interior painting actually is. Rolling the walls is the quick part at the end.
Damp air changes the timing
West Palm Beach afternoons average 82 percent relative humidity across a 71 year record, and September afternoons average 86 percent.
Painting specifications draw a line at 85 percent. They also say not to paint when the air is less than five degrees above the dew point, and not to paint a damp or wet surface at all.
The dry times printed on a can come from a lab. One interior latex lists an hour to touch and four hours to recoat at 77 degrees and 50 percent humidity, then says those times move with the temperature and the humidity in the room.
So in August the same wall waits longer between coats than it does in February. Leave the air conditioning running while we work. UF/IFAS notes that a Florida home sitting above 85 degrees inside runs past 55 to 60 percent humidity, and that is where mold starts.
Do not paint over a moisture problem
Paint does not stop mildew. It covers it, and then the mildew comes back through. The EPA puts it simply: moisture control is mold control. Dry a damp material within 24 to 48 hours and in most cases nothing grows on it.
If a wall has had mildew on it, the data sheets set out a wash first. Test the cleaner on a small hidden patch. Then one part household bleach to three parts clean water, scrubbed on, left ten minutes, rinsed off and dried before any paint goes near it. Wear eye protection and waterproof gloves, and do not add anything else to the mix.
Water stains need a primer sealer under the paint or they bleed back through the new coat.
When the spots keep returning in the same spot, the wall is telling you about water and not about paint. In a bathroom that usually points at the surfaces, which is a bathroom remodel conversation rather than a painting one.
Sheen, room by room
Flat belongs on ceilings and on walls in rooms nobody brushes past. Its weak point is cleaning, because stains are harder to lift off a low sheen surface.
Eggshell is the working wall finish for hallways and family rooms, and anywhere a wall gets touched. Satin holds up on trim and interior doors. Semi gloss goes on trim and cabinets, the surfaces hands actually land on.
High gloss cleans easily and resists stains, and it is the wrong answer on a ceiling, where reflected light finds every ridge.
For damp rooms there are interior paints built for the job, carrying additives that slow mold and mildew growing on the surface of the paint film. Worth asking about before a color gets picked for a bathroom or a laundry room.
The parts that get rushed
A ceiling gets a flat finish because any shine up there picks out every ridge and seam in it. That is the same reason high gloss is not recommended on a ceiling.
Trim and baseboards take a harder finish than the walls because people put their hands and their shoes on them. They are also where a rushed line shows up first, at eye level, in every photo of the room.
Caulk has an order to it that gets missed. One data sheet puts the caulk in the gaps around trim and ceilings after the primer has gone on, not before it.
Cutting in along a ceiling line and down the edge of trim is slow work, and it is most of what separates one painted room from another.
What to move and what to cover
Clear the walls first. Art, mirrors, curtains with their rods, and anything sitting on a shelf. Whatever stays up has to be worked around, and working around things is where drips come from.
Small furniture goes out of the room. Big pieces move to the middle and get covered, and so do the floors. Leave a clear path in and out.
Plates and hardware come off the wall rather than getting taped over. Painting specifications call for removing or masking electrical plates, hardware, light fixture trim and fittings before any prep starts.
Then the practical things: somewhere for us to set up, and a plan for pets while the front door is open.
If your house was built before 1978, tell us when you book. Sanding or scraping old paint can release lead dust, and the warning is printed on the can itself.
Paint goes on near the end
On a remodel, paint is one of the last things in, after the tile. Put it on early and everything that comes after marks it up, and then the room gets painted twice.
If a kitchen remodel or a full home renovation is on the table, the painting belongs inside that same job rather than as a separate visit months later.
We paint in the cities we work in across South Florida. The sheen and the prep get settled standing in the room, not over the phone.
Can you paint inside on a rainy day?
Usually yes, with the air conditioning on. What matters is the air in the room and the state of the surface. Specifications say not to paint above 85 percent relative humidity, within five degrees of the dew point, or on a damp surface.
Why does the second coat take longer in summer?
Because the recoat time on the can is measured at 77 degrees and 50 percent humidity, and the maker says that time moves with the temperature and the humidity in the room.
Does every wall need primer?
No. Primer goes where the surface asks for it: bare patches and anything that would otherwise bleed through. Data sheets call for a primer sealer over a water or smoke stain so it does not come back.
When can I wash the walls?
Not right away. One interior latex data sheet asks for at least 14 days before washing, so the film has time to harden first.
Will paint fix the spots on my bathroom ceiling?
Not on its own. The EPA's line is that moisture control is mold control. Wash the surface down properly, then work out where the water is coming from, or the spots come back through the new coat.
Let us see the rooms.
Book a visit by form, phone or WhatsApp. We walk the rooms with you, look at the walls and the trim, and talk through colors and finishes. We speak English and Spanish.