Around Stamford, outdoor painting usually runs from about late April or May through October. Cold nights close it at both ends, and humid summer days need care. Painting indoors carries on through the winter months.
What is the best time of year to paint the outside of a house here?
The best months to paint outside around Stamford are May, June, September and early October, with July and August workable around heat and storms. National Weather Service normals for nearby Bridgeport show average April lows rising from about 37 to 47 degrees through the month, and October lows falling from about 54 to 43.
Most exterior paints need the air and the wall to stay above a minimum temperature for hours after application, including overnight. That is why April and late October are the edges of the season. Inland towns such as New Canaan, Wilton, Weston and Pound Ridge cool off faster at night than Shippan or Old Greenwich, so their season is a little shorter.
Can you paint outside when it is raining or about to rain?
No. Paint cannot go on in rain, and it should not go on when rain is due before it can dry. Rain on wet paint rinses it away or leaves it patchy.
We check the forecast each morning. Summer thunderstorms can build fast in the afternoon here, so on doubtful days we do prep work or paint a side that is sheltered.
It rained a few hours after painting. Is it ruined?
Probably not. If the paint had a few hours to dry, it has usually formed a skin and will be fine. Paint caught while still wet may run, spot or lose its even sheen.
Check the surface after it has fully dried. Streaks or a rough, spotty surface mean that area needs a light sanding and another coat. A good painter comes back to check.
How long after rain before siding can be painted?
Wait until the siding is dry, which for wood usually means a full dry day. Vinyl and aluminum dry within hours in sun and wind. Cedar shingles, clapboard and stucco hold water longer, and shaded walls under trees dry slowest of all.
After a wash, wood siding should dry for a day or two before paint. Paint over damp wood traps the water, and the paint blisters later.
How cold is too cold to paint outside?
It is too cold when the air or the wall drops below the minimum on the paint label. For many exterior latex paints that is 50 degrees Fahrenheit, and some are made to go on as low as 35. The temperature has to stay above the minimum while the paint dries, not only when it is applied.
Siding on a shaded north side often sits several degrees below the forecast air temperature. Bridgeport's normals show November lows falling from about 43 to 34 degrees through the month, so by November exterior painting here is mostly over. A painter who offers to paint siding in late November should show you a label that allows it.
How hot is too hot, and is direct sun a problem?
Direct sun on the wall is usually a bigger problem than the air temperature. Paint on a hot, sunlit wall dries too fast to level and bond, which leaves lap marks and blisters. Most labels also give an upper temperature limit.
Bridgeport's July normals show an average high of about 83 degrees, which is fine for paint. Dark siding in full sun gets far hotter than that, though, so we follow the shade around the house through the day.
Does dew or humidity affect exterior paint?
Yes. High humidity slows drying, and dew settling on paint that has not set can leave it dull, streaked or sticky. Humid summer nights near the Sound often leave walls wet well into the morning.
So the working day starts once the walls are dry and ends early enough for paint to set before evening dew. In September and October that window gets shorter.
Does wind matter when painting outside?
Yes. Wind dries paint too fast, blows grit and pollen into wet paint and carries spray. Homes on the water in Shippan, the Cove, Old Greenwich and Rowayton often get a steady breeze off the Sound.
When it is gusty, the sprayer stays in the truck. We brush and roll on the sheltered side, or do prep, and leave the open walls for a calmer day.
Can you paint inside in winter with the windows closed?
Yes. Interior painting works well in winter with the windows shut. Water-based paints have low odor, and a heated house is warm and dry enough for paint to cure.
We use fans and the house's own ventilation. Winter is a good time for inside work here, because spring through fall fills up with exterior jobs.
For a real price on your own job, book a free estimate and get a written quote. Call or text (203) 349-9745.