Seasonal Cottage Guide

Preparing Log & Rustic Furniture for Canadian Winter

The way you close a cottage matters more than most owners realize. Log and rustic furniture left in an unheated building through a Canadian winter faces conditions — extreme cold, near-zero humidity, freeze-thaw cycles, and months of stagnant air — that accelerate every kind of wood movement and finish stress. A few hours of preparation in October can prevent a season of repairs in May.

Why Canadian Winters Are Hard on Wood Furniture

Wood is hygroscopic — it absorbs and releases moisture based on the humidity of the surrounding air. In a heated home, this movement happens gradually and furniture adjusts slowly. In an unheated cottage sealed from October to May, wood experiences a sharp transition: the building goes from summer equilibrium (40–60% relative humidity) to winter conditions that can drop below 10% RH inside an unheated structure when temperatures hit -20°C or colder outside.

At those moisture extremes, wood shrinks — significantly. A log or timber piece that was dimensionally stable through the summer will check (develop surface cracks along the grain), loosen at joints, and potentially split along existing stress lines. The damage isn't random: it follows the grain, and it's predictable. Furniture that wasn't protected going into winter often needs at least minor repairs coming out of it.

Freeze-thaw cycles add another layer of stress. When temperatures hover around 0°C for extended periods — common in Ontario, Quebec, and BC coastal areas — wood that has retained some surface moisture expands and contracts repeatedly. This loosens film finishes (polyurethane is particularly vulnerable) and can work joints loose over successive cycles. Penetrating oil finishes handle this better because they flex with the wood rather than forming a rigid surface film.

Before You Close: Indoor Furniture

Surface Treatment

The single most useful thing you can do before closing a cottage is apply a coat of penetrating oil finish to all log and wood furniture surfaces. This isn't a cosmetic treatment — it's moisture buffering. A coat of Rubio Monocoat, Osmo Polyx, or similar hardwax oil helps slow the rate at which the wood loses moisture during the dry winter months, reducing the severity of shrinkage and checking.

The application doesn't have to be perfect — a wipe-on, wipe-off application takes 20 minutes per room and provides meaningful protection. Do it while the wood still has some ambient warmth from the fall season; cold wood absorbs oil less effectively.

For furniture with film finishes (lacquer, polyurethane), inspect for any chips, peeling, or areas where the film has separated from the wood surface. Exposed wood under a compromised film finish is where moisture exchange will be most aggressive over winter. Sand any lifting edges smooth and apply a small amount of compatible finish to seal them before closing.

Humidity Control

If the cottage has any passive humidity retention strategy — even basic measures like not leaving a dehumidifier running through the winter, or placing shallow bowls of silica gel in enclosed spaces — this helps moderate the humidity swing that drives wood movement.

For cottages with electricity left on through the winter (common in Ontario cottage country where pipes need to be protected), a small space heater or a thermostat set to just above freezing (5–7°C) keeps indoor RH from bottoming out as severely as a completely unheated building. Even that modest heat makes a meaningful difference to furniture. If the electricity is shut off, consider a desiccant-based humidity buffer in enclosed cabinets and drawers.

Open drawers and doors slightly — don't latch them shut for the winter. Wood drawers that are closed tightly in fall will swell and stick or split as humidity changes. A few centimetres of clearance lets drawers breathe and move without binding.

What to Move, What to Leave

Most solid wood furniture handles unheated winters better than you'd expect if it was well-made to begin with. Pieces that are higher risk and worth moving to a heated space if possible:

Thin-panelled pieces (cabinet doors, drawer bottoms made of thin plywood) — these are more vulnerable to splitting than thick solid stock
Upholstered pieces with wood frames — fabric and foam absorb moisture and can mildew in a damp spring thaw; if you can't move them, cover them with breathable cotton covers and leave some air circulation around them
Antiques and heirloom pieces — these are almost always more vulnerable than modern commercial furniture and should not overwinter unheated if avoidable

What checking is — and isn't: Small surface cracks along the grain are called "checking" and are normal in log and rustic furniture, particularly in Canadian climate conditions. They're not structural failures. They happen along the grain because wood dries faster on the outside than the inside, creating surface tension. Checking that develops or worsens over winter is expected; it doesn't mean the furniture is damaged beyond use. See our guide to log furniture checking and cracking for more detail.

Outdoor Furniture: Covering and Storing

Outdoor log and rustic furniture — Adirondack chairs, log patio sets, cedar benches — faces more severe conditions than indoor pieces, and requires more active protection before winter.

The Case for Bringing It In

If you have a shed, garage, or covered storage space at the cottage, moving outdoor furniture inside for winter is the right call. Even an unheated shed protects against the worst freeze-thaw cycles, direct precipitation, and UV damage from winter sun on snow-covered surfaces. Furniture stored under cover at a cottage consistently looks better and lasts longer than furniture left exposed.

Break down any knockdown pieces before storage. Furniture left assembled in a pile traps moisture at contact points between pieces, which is where rot and finish breakdown start.

If It Has to Stay Outside

For furniture that can't be stored indoors, preparation before winter matters:

Apply a penetrating oil or exterior finish before the temperature drops below 10°C. Most penetrating finishes require temperatures above 10°C to cure properly. Once you're into October in most of Canada, your window is closing. Apply in September if possible. Cedar, teak, and pine outdoor furniture all benefit from a fresh coat of oil before winter.
Cover with breathable furniture covers, not tarps. Solid plastic tarps trap condensation underneath them, creating a humid microclimate that accelerates mould and finish breakdown. Canvas or breathable synthetic furniture covers let moisture escape while keeping out precipitation and debris.
Elevate off the ground if possible. Furniture sitting directly on a deck or ground-level surface through winter accumulates ice under the legs, which forces moisture into end grain — the most absorbent part of any piece of wood. Simple rubber feet, blocks of scrap wood, or pallets create enough clearance to help.
Remove cushions entirely. Store them indoors in a breathable bag. Outdoor cushions left on furniture over Canadian winters don't survive — even water-resistant fabrics break down under sustained freeze-thaw and UV, and foam cores absorb enough moisture to encourage mould.

Treating Surfaces Before Freeze-Thaw Cycles

The best timing for surface treatment is late September to early October — before night temperatures start regularly dropping below 0°C. By the time you're at the cottage for Thanksgiving in most of Canada, you're at or near the end of the effective treatment window.

For exterior surfaces, use a product formulated for outdoor exposure: Sikkens Cetol, Sansin ENV, or a high-quality teak oil for dense-grained species. Apply according to manufacturer directions — typically two coats on wood that hasn't been treated recently. The goal is sealing the end grain and surface against the aggressive moisture cycling of a Canadian winter-spring sequence.

Interior furniture benefits from the same oil refresh described earlier. Think of it as the equivalent of winterizing a boat engine — a simple preventive step that avoids a much more expensive repair later.

Spring Inspection Checklist

When you open the cottage in spring, give all log and rustic furniture a systematic inspection before putting it back into full use:

Spring Furniture Inspection Checklist

Check all joints for looseness: Sit in every chair, wiggle table legs, test bed rail connections. Any joint that has developed movement over winter should be tightened before the season. Loose joints worsen over time — catching them in May beats emergency repairs in August.
Inspect for new checking: Note any cracks that have developed or widened since fall. Surface checking is cosmetic and can be left; deep checks (wider than 3mm, running into the interior of a structural member) should be assessed. Most can be treated with appropriate wood filler or epoxy consolidant.
Check finish condition: Look for peeling, chalking, or areas where the finish has failed. Address these before the summer season — a fresh coat of oil on the whole piece takes an hour and resets the protection.
Look for insect evidence: Small piles of fine sawdust under furniture, or small round exit holes (2–4mm diameter) in the wood, indicate woodboring beetles. This is more common in older log furniture and reclaimed wood pieces. Treat promptly — infestations spread.
Inspect outdoor furniture for rot: Press firmly on leg bottoms, end grain surfaces, and any area that was in contact with the ground or standing water. Soft, punky wood that yields under pressure has begun to rot and needs attention.
Reapply protective finish to outdoor pieces: Even well-protected outdoor furniture benefits from a spring oil refresh before the season. Do it before you're in full summer use mode — it's much easier to treat furniture before the deck is full of chairs and people.
Rehydrate the wood: After months of low-humidity winter conditions, wood furniture may benefit from the moisture that naturally returns with spring. Don't rush to heat the cottage to summer temperatures immediately — allow the wood to reacclimatize gradually over a week or two if possible.