Exterior Painting throughout Northbridge, MA.

The town holds at least three National Register historic districts, and their nominations describe wood-frame company housing finished in clapboard and shingle. A house that was clad in clapboard in 1880 and has been scraped and recoated for well over a century carries a very different paint history than one sided in the 1990s.

The town was founded in 1772, and its villages grew around mills on the Blackstone and Mumford Rivers. Houses from that mill era can carry many layers of paint on their clapboard and trim, which is why an estimate starts with a close look at what is already on the walls.

What the historic districts are made of

The Whitinsville Historic District, listed in 1983, covers about 350 structures on roughly 250 acres. Its nomination counts significant numbers of Greek Revival, Queen Anne and Colonial Revival houses, and notes that roughly a third, some 97 buildings, are Queen Anne, with patterned shingles in the gable ends as a recurring detail. Those shingled gables, brackets and turned porch posts are the parts of these houses that take the most hand scraping and brushing.

In Rockdale, the Common Housing District is six wood-frame company tenements built between 1880 and 1917, four of them triple-deckers, all faced with clapboard. Three-story walls mean staging or lifts and a longer job than a two-story Colonial. The Linwood district centers on a brick cotton mill built around 1866, with wood-frame dormitories and duplexes around it. More detail on each village is on the Whitinsville, Rockdale and Linwood pages.

Re-siding, asbestos shingles and what is under them

Even in 1983, the Whitinsville nomination recorded scattered re-siding, including one house whose gable shingles, possibly patterned, were by then covered with synthetic siding. The Linwood nomination described one dormitory as sheathed with asbestos siding at the time it was written. Those notes describe conditions decades ago, but they are a reminder to look closely at what a house is actually clad in.

Asbestos-cement shingles can be painted, but they should not be sanded, power-washed hard or broken; cleaning is gentle and the coating is chosen to bond to the cement surface. Vinyl can also take paint if the color is no darker than the original, so it does not absorb enough heat to warp. Wood clapboard and shingle need scraping of loose paint, sanding feathered edges, spot-priming bare wood, and caulking at trim joints.

Lead on the outside of pre-1978 houses

Census data show 1,770 local housing units built in 1939 or earlier. Unless testing shows otherwise, the bottom layers on clapboard and trim of a house that old should be treated as possibly containing lead. The EPA rule applies when paid work disturbs more than 20 square feet of exterior paint on a pre-1978 home, and window replacement is covered regardless of size. That means ground covers, no open-flame burning or high-speed sanding without a HEPA shroud, and daily cleanup of chips. Our lead-safe painting page explains the requirements.

Timing the work

Exterior paint needs dry wood and air and surface temperatures within the label range through the cure, which in practice limits the season here to the months between spring and late fall. Some modern acrylics are rated down to 35°F, but short days and cold nights cut into drying time. Read whether a house can be painted in November before planning a late-season job, and see common exterior paint failures for what peeling and blistering usually point to.