Wide Plank vs. Narrow Strip Hardwood in Bellingham (2026)

Wide plank vs. narrow strip hardwood in Bellingham: the short answer

Board width is the one hardwood choice that Pacific Northwest humidity punishes hardest. A wider solid board moves more across its face for the same change in moisture, so a 7 inch plank can gap and cup roughly three times as much as a 2 1/4 inch strip through a wet Bellingham winter. Narrow strip is the forgiving option, wide plank is the dramatic one, and engineered construction is what makes wide plank behave here. Solid hardwood installed in Bellingham runs $8.80 to $15.40 per square foot, and wide plank sits at the top of that band or just above it because of material grade and waste.

Strip flooring is any solid or engineered board under 3 inches wide. Plank is 3 inches and wider, and the trade calls anything 5 inches and up wide plank. The width label is not cosmetic trivia. It sets how the floor answers the swing between a heated January indoors and a dry August, the swing that decides whether your seams stay tight.

Prices verified August 2026 against active Bellingham bids.

What counts as strip, plank, and wide plank

Three width bands cover almost every Bellingham floor.

Strip flooring, under 3 inches

The traditional 2 1/4 inch oak strip is the floor in most Bellingham homes built before 1970. Narrow boards mean more seams per room, and more seams spread the seasonal movement across many tiny gaps instead of a few wide ones, so the floor looks tight year round. Strip is the safest width for a solid floor going in over a Bellingham crawlspace.

Standard plank, 3 to 5 inches

Three to five inch plank is the volume seller today and the middle of the road on movement. It gives the wider, quieter look most buyers want without the moisture sensitivity of a true wide board. In solid form it still wants a careful moisture read before install.

Wide plank, 6 inches and up

Six, seven, and eight inch boards, and the extra wide planks past that, carry the calm look people photograph. They also move the most. A wide solid plank in Bellingham is a real commitment to humidity control, and it is the width where most local installers steer a homeowner toward engineered construction instead of solid.

How plank width behaves in Bellingham's climate

Wood is hygroscopic, meaning it takes on and gives off moisture with the air around it, and it moves almost entirely across the grain rather than along the board. That fact drives the width decision.

Wider boards move more, and it shows

Cross-grain movement is proportional to width. For the same drop in moisture content, a 7 1/2 inch board loses about three times the width a 2 1/4 inch strip does. On a narrow floor that movement hides in dozens of hairline seams. On a wide floor it collects at each board edge as a visible winter gap, and if the underside takes on moisture faster than the top, the board cups. Bellingham takes roughly 36 inches of rain a year at about 75 percent average humidity, then indoor air dries under winter heat, so the annual swing is wide enough to make plank width a decision, not a detail. Our guide to gaps in hardwood floors shows normal seasonal movement versus a real problem.

The NWFA acclimation spec is stricter for wide boards

Acclimation is the stretch when flooring sits in the room where it will live so its moisture content settles near the home's year round average before installation. The National Wood Flooring Association ties the target directly to width: solid strip under 3 inches should land within 4 percentage points of the subfloor moisture content, while plank 3 inches and wider should be within 2 points. Wide plank has less room for error. Getting there in Bellingham means testing the subfloor with a meter, not counting days on a calendar. Our hardwood acclimation guide walks through the moisture readings that matter.

Solid versus engineered at wide widths

Engineered hardwood is a real wood wear layer bonded over a cross-laminated plywood or fiberboard core, and that core is what restrains cross-grain movement. A 7 inch engineered plank stays far flatter through a Bellingham winter than a 7 inch solid board because the core fights the wood's urge to expand sideways. That is why wide plank and engineered go together here. For a full breakdown, see engineered versus solid hardwood. Cut matters too: quartersawn and riftsawn boards move less across the face than plainsawn, which is why premium wide plank is often specified that way.

What each width costs in Bellingham in 2026

Width drives material price more than labor. Wider boards come from larger, higher grade logs and generate more waste, so the material line climbs even when the install method is the same. The table uses solid hardwood installed unless noted.

Where the material premium comes from

A wide plank order costs more before a single board is nailed down. Wider, longer boards need clearer, slower grown lumber, mill yield per log is lower, and jobsite waste runs higher. On a 1,600 square foot floor, moving from narrow strip to solid wide plank can add several thousand dollars, most of it material.

Installation method rides on width too

Narrow strip nails down cleanly over a wood subfloor. Wide solid plank often wants glue assist under the nails or a full glue-down to hold the board flat and quiet. Over concrete, wide plank is almost always engineered and glued or floated. Our post on floating, glue-down, and nail-down methods covers when each applies.

Which width fits which Bellingham house

The right width depends on the age of the house, what sits under the floor, and how tightly the home holds its indoor humidity.

Older homes in Fairhaven and the Lettered Streets

A Fairhaven Victorian or a Lettered Streets bungalow most likely started with 2 1/4 inch fir or oak strip, and matching that width on a repair or an addition keeps the floor honest to the house. These homes usually sit over a crawlspace, the moisture argument for staying narrow in solid wood. If a homeowner wants the wide look in a period home, engineered wide plank gets it without fighting the crawlspace every winter.

Newer builds in Barkley and Sudden Valley

Homes built from the 1990s forward often have better sealed crawlspaces or slab sections and steadier indoor humidity, which widens the safe range. This is the housing stock where solid standard plank, and even solid wide plank with disciplined climate control, becomes reasonable. A moisture read still comes first, but the start is more forgiving than a century-old home.

Homes over a crawlspace, and the wet months

A floor over a Bellingham crawlspace lives or dies by what happens below it during the wet months. A failed vapor barrier or standing water sends moisture up into the boards from underneath, and a wide plank shows that stress first and worst as cupping. Get the crawlspace and subfloor read before the floor is ordered. If the numbers come back high, budget the fix first: subfloor repair here runs $300 to $2,500 per area and moisture remediation runs $500 to $3,500. Our subfloor repair cost guide covers what those readings mean.

What your quote and installer should confirm

Two hardwood quotes can look far apart on price and be built on completely different width and construction assumptions. Get the specifics in writing.

Specs to see on the quote

• Board width and construction named exactly: strip or plank, and solid or engineered.
• Species and cut, including whether wide plank is plainsawn, riftsawn, or quartersawn.
• Moisture readings of the subfloor and the delivered flooring, with the target spread for that width.
• Install method: nail-down, glue assist, glue-down, or floating, and why it fits your subfloor.
• Expansion gap sized to the flooring, hidden by trim rather than caulked shut.

Most hardwood installation in Bellingham still lands on strip or standard plank, and the wide plank jobs that succeed here are the ones where the moisture work was done first. Our Janka hardness species guide helps narrow the wood itself.

Verify before you book

Check any contractor's registration through the Washington State L&I contractor lookup and confirm the bond and insurance are current. Straight flooring replacement usually does not trigger a permit in Bellingham, but structural subfloor work can, and the City of Bellingham permit office can tell you what applies. Then get a free estimate so the width and construction are a spec on paper rather than a guess.

Frequently Asked Questions

Every Bellingham floor sits in its own house over its own subfloor, and the right width on a 1912 Fairhaven original is rarely the right width on a 2004 Barkley build. If you want an installer to look at your rooms and price the width and construction alongside the wood, request a free quote and we will match you with a local Bellingham flooring pro.