Repaint or Replace: Deciding Between Paint and New Siding on the North Shore

What each option actually costs in 2026

A full exterior repaint on a typical North Shore house, 2,000 to 2,800 square feet of wall area, runs $6,000 to $15,000 depending on the number of storeys, how much trim and detail work is involved, and whether the existing paint needs to be scraped and primed or is sound enough for a direct recoat. That price assumes the substrate underneath, meaning the wood, fibre cement, or stucco surface the paint sits on, is in good condition.

Full siding replacement runs $25,000 to $60,000 or more for the same house, depending on the cladding material chosen and whether the rain screen cavity behind it is being rebuilt at the same time, which most re-siding projects on the North Shore now require. Fibre cement lap siding sits at the lower to middle of that range. Real wood cladding, board and batten in cedar, or a mixed-material facade with stone or brick accents pushes toward the top of it.

The gap in cost is large, which is exactly why the decision matters. Repainting a wall that needs replacing wastes the paint money entirely, since the wall gets torn open within a few years anyway. Replacing siding on a wall that only needed paint is an unnecessary $20,000 to $50,000 spent on a wall that was structurally fine.

The test that actually tells you which one you need

Paint condition alone is a poor guide. Chalky, faded, peeling paint can sit on a wall that is completely sound underneath, since UV exposure and weather degrade a paint film regardless of what is behind it. And a wall can look freshly painted while the sheathing behind it is soaked through, especially if the last paint job was done specifically to cover up visible staining rather than to address its cause.

The real test is a probe test at the places water actually collects: window sills and the trim directly below them, the bottom few feet of any wall near grade, deck ledgers where a deck attaches through the cladding, and any inside corner where two wall planes meet. Push an awl or a flathead screwdriver firmly into the wood at these spots. Solid wood resists and the tool barely marks the surface. Wood that has taken on water is soft, and the tool sinks in with little resistance, sometimes disappearing to the handle. Any spot that fails this test means water has been getting behind the cladding for long enough to rot the wood underneath, and paint will not fix that.

A second sign, independent of the probe test, is whether the house was built or last re-sided before December 2006, when coastal BC building codes began requiring a rain screen cavity, a gap of at least 10 millimetres behind the cladding that lets water drain out and air circulate to dry the wall. A house clad flat against the sheathing with no cavity, common on Lower Mainland construction through the 1980s and 90s, is more likely to have hidden moisture damage even if the visible probe test passes at a few spots, because the wall has no way to dry itself between rain events.

Lifespan in a climate that rains for half the year

A quality exterior repaint on a sound substrate lasts 8 to 12 years on the North Shore before it needs recoating, shorter than the 12 to 15 years a similar paint job might last in a drier climate, because UV exposure combined with sustained moisture cycles breaks down a paint film faster here. South and southwest-facing walls, which take direct sun and wind-driven rain together, tend to fail first.

Full siding replacement, done with a proper rain screen cavity and a durable cladding material, lasts 30 to 40 years before the cladding itself needs replacing again, though the paint or finish on that cladding will still need recoating on the same 8 to 12 year cycle as any other painted exterior. Fibre cement holds up longer than wood in this climate with less maintenance, since it does not absorb water the way wood siding does, but it still needs a rain screen cavity behind it to perform as rated.

The lifespan gap is the real argument for replacement once a wall has failed. Repainting a compromised wall buys maybe two to four years before the paint failure reappears in the same spots, because the water source behind the cladding was never addressed. At that point the homeowner has paid for a repaint and is still facing the same replacement decision, just later and with the added cost of the wasted paint job behind them.

How this decision connects to a rain screen retrofit

If the probe test finds rot, or the house predates the 2006 rain screen requirement, siding replacement is not just a materials swap. It is the opportunity to correct the wall assembly itself, adding the drainage cavity that lets the wall dry between rain events going forward, which is what actually prevents the same failure from recurring in another 15 years.

This is also the one point in a building's life when adding exterior insulation is genuinely affordable, since the wall is already open. Continuous exterior insulation applied under the new cladding, outside the sheathing, closes thermal bridging at every stud, something that cannot be added later without opening the wall again. If a heat pump retrofit or a BC Energy Step Code upgrade is anywhere in your plans over the next several years, doing that insulation work at the same time as a siding replacement, rather than as a separate project later, saves a second full teardown of the wall.

A repaint does not offer this opportunity, since the wall stays closed. That is not a reason to replace siding that does not need it. It is a reason to weigh the decision against your longer-term plans for the house before settling on the cheaper, faster option by default.

What we tell clients weighing this decision

We do the probe test at every window and corner before quoting either option, because a quote for paint on a wall that needs replacing, or a quote for replacement on a wall that only needs paint, is a wrong quote regardless of the price on it. Where the wall passes the probe test and has an existing rain screen cavity, we recommend paint and put the savings toward something else on the project list. Where it fails, or the house predates 2006 construction, we walk through what a rain screen retrofit adds to the replacement cost and what it buys in return, so the decision is made with the full picture rather than on the surface condition of the paint alone.