Trim is the detail work of an exterior
Plenty of houses don't need the whole exterior painted. The siding may still be sound while the window trim, door casings, fascia, the front door and the shutters look tired. A trim-only repaint is a common job, and it's often priced in a way homeowners don't expect: by the number of pieces and edges rather than by the size of the wall.
Trim is narrow, broken up and full of joints. Every window has sills, casings and sometimes muntins. Every door has a frame, a threshold area and the door itself with its panels. Shutters have louvres or raised panels with many faces. All of it is brushed by hand, so the hours per foot are much higher than for siding.
What the weather data says about exposure
NOAA's engineering weather data for Warner Robins AFB lists a 50-year basic wind speed of 90 mph (3-second gust at 33 feet), a 100-year rainfall rate of 4.0 inches per hour and about 28 freeze-thaw cycles in an average year. These design figures describe rare extremes and a typical year's freeze count. For trim, the lesson is about joints. Rain pushed by wind runs along sills and into miters, and each freeze-thaw cycle can widen a crack that lets water in.
That's why the prep on trim, not the paint, sets how long the job lasts:
- cracked caulk at miters, sills and siding joints comes out and is replaced;
- glazing putty on old windows is checked and renewed where loose;
- soft wood on sills and the bottoms of casings is cut out and replaced or repaired with epoxy;
- bare wood and end grain are primed before topcoats.
Entry doors
A front door gets handled, slammed and stared at. Painters usually take it off its hinges, or work very early so it can close by evening. Panels need careful brushing to avoid runs in the corners. Hardware comes off rather than being masked. Doors facing strong sun need a product that resists softening and sticking at the weatherstrip. Expect a door to be priced as its own item, and a door with glass panels to take longer.
Shutters
Working shutters are usually taken down, cleaned, repaired, painted on a rack and re-hung. Louvred shutters take time because every slat has two faces and two edges; spraying them flat speeds that up. Vinyl shutters need a product made for vinyl and a colour no darker than the maker allows, or they may warp. Fixed shutters painted in place take care to avoid painting the siding behind them.
Products
Trim and doors normally get a higher-sheen enamel than siding, which cleans easily and sheds water. Our sheens guide explains the choices. Premium trim enamels cost more but level better and hold their colour. Oil-based primers are still used on some bare or weathered wood; the painter should explain which primer suits your trim.
Older paint and lead
Trim is where old paint layers are thickest, and scraping and sanding it raises dust and chips. Under EPA's Renovation, Repair and Painting Rule, anyone paid to do work that disturbs paint in homes, childcare facilities and preschools built before 1978 must hold RRP certification, firms included, even sole proprietorships, and their workers must be trained in lead-safe work practices. In a house built before 1978, you can ask the painter whether the firm holds RRP certification, and the containment and cleanup will add to the price.
What else moves the total
- several trim colours, or a front door in an accent colour;
- garage doors, which are large and paneled;
- porch columns and railings;
- second-storey windows that need ladders or a lift;
- window screens removed and refitted.
Getting a clear proposal
Ask each painter to list every window, door and shutter, the repairs they'll make, the primer and enamel, and the number of coats. Our exterior painting page covers the full process, and the pricing guide shows how trim-only work compares with a full repaint.