How do I store deck cushions in a Vancouver garage long-term?

Store deck cushions in breathable fabric storage bags or bins with ventilation, in a dry area of your garage elevated off the concrete floor — and in Metro Vancouver, controlling moisture is the critical factor.

Vancouver's marine climate means your garage is likely more humid than you'd expect, even in summer. Concrete garage floors wick moisture upward, and without proper air circulation, cushions stored directly on the floor will develop mould and mildew within a single wet season. This is the same persistent dampness that affects decks themselves — it just follows your cushions indoors.

The key steps for long-term storage in a Vancouver garage:

Clean and dry cushions completely before storing — this is non-negotiable. Even a small amount of residual moisture sealed inside a storage bag will grow mould over the winter. Wash cushion covers if removable, and allow foam cores to air dry for at least 48 hours in a warm, ventilated space before packing. A dry spell in September or early October is your best window before the rains set in.

Elevate everything off the concrete floor. Use a wooden pallet, wire shelving, or a dedicated storage bench to keep cushions at least 6-12 inches above grade. Concrete floors in Vancouver garages are rarely fully moisture-proof, and direct contact transfers dampness into foam and fabric over months of storage.

Choose breathable storage over airtight plastic. Large canvas or polyester storage bags designed for outdoor furniture allow some air exchange, which prevents the stale, trapped-moisture conditions that breed mould. Avoid sealing cushions in plastic garbage bags or airtight totes — in a humid garage, you're trapping whatever moisture is already present. If you prefer a bin, choose one with a vented lid or leave it slightly ajar.

Add a desiccant. A few silica gel packets or a small rechargeable dehumidifier pack inside each storage bag absorbs residual moisture throughout the winter. Replace or recharge them mid-season if your garage is particularly damp.

If your garage has significant humidity issues — condensation on walls, visible mould, or a persistent musty smell — consider a small plug-in dehumidifier running on a timer through the wet months. This protects not just cushions but tools, cardboard boxes, and anything else stored there.

For cushions with high-quality outdoor fabric (Sunbrella is common on better patio furniture), the fabric itself resists mould reasonably well — but the foam core underneath is far more vulnerable. Protecting the foam is the real priority.

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This is a bit outside our core focus on deck construction and materials, but moisture management is the same challenge whether you're building a cedar deck or storing what goes on top of it. If you're thinking about a covered deck, pergola, or outdoor storage solution that keeps furniture protected year-round without hauling it inside, that's a project worth exploring — Vancouver Deck Contractors can match you with contractors who build exactly that kind of outdoor living space.