Deck Painting & staining for Northborough, MA homeowners.

Census data shows 74.8% of the town's housing units are single-family detached homes, and another 8.0% are single-family attached. Where one of those homes has a deck, the finish wears according to the yard around it: how much sun it gets, what drops on it, and how fast it dries after rain.

Before picking a product, it helps to look at the deck on a damp morning. The boards that stay dark longest, the corners where debris collects, and the stair treads that get slick are where a finish will fail first.

Living under pines and hemlocks

The town's 2020 master plan describes local forests as mostly white pine and hemlock. Where they stand close to a deck, they shade it in every season and shed needles, pollen and sap onto it. Needles pack into the gaps between boards and hold water against the edges; sap leaves sticky spots that stain won't bond to.

For a deck in that setting, the maintenance between stain jobs matters as much as the stain itself:

• Clear the board gaps with a putty knife or leaf blower, especially before winter
• Wash off pollen and mildew in spring with a deck cleaner rather than a high-pressure blast that raises the grain
• Move rugs, grills and planters now and then so the wood under them can dry
• Choose a stain with mildew resistance for the shaded sections

Hills, ponds and the river

Terrain here is rolling, higher in the western half of town, with elevations ranging from 250 feet to 715 feet at Mount Pisgah, according to the master plan. On a sloped lot, a deck is often elevated on one side, which leaves tall posts, long stair runs and the underside of the framing exposed to weather. Those vertical parts need finish too.

The plan names the Assabet River, running through the southeastern part of town, along with Little Chauncey Pond and Solomon Pond, as notable water resources. A deck that faces open water or sits low near wet ground can see more moisture than one on a dry upland lot, so let boards dry thoroughly before coating and favor penetrating finishes that allow the wood to breathe.

Wood type and finish choice

Pressure-treated pine is the usual framing and decking material for backyard decks. New boards come wet from treatment and should weather until a sprinkle of water soaks in rather than beading. Cedar resists rot naturally but turns silver within a season or two without a toned stain. Composite and PVC decking is cleaned, not stained.

A semi-transparent stain soaks into the wood and wears away gradually, so a recoat is a cleaning and a fresh coat. Solid stain and deck paint form a surface film that covers mismatched or weathered boards but can peel if water gets under it, and peeled film has to be stripped before switching back to a penetrating product. The paint vs. stain comparison walks through those trade-offs in more detail.

Porches on older houses

Census data puts 11.3% of local housing units in the 1939-or-earlier category, and a house of that age may have a covered porch with a painted tongue-and-groove floor rather than an open stained deck. Porch paint on a house built before 1978 may contain lead in its lower layers, so scraping and sanding it falls under Massachusetts lead-safe rules; see our lead-safe painting page. For the house walls and trim, go to exterior painting in Northborough, and deck stain in a New England winter explains how finishes wear over the cold months.