You can weatherproof indoor furniture by sealing every surface against moisture, protecting the fixings against rust and accepting that the result will be weather resistant rather than genuinely weatherproof. In practice that means stripping back the existing finish, treating bare timber with an exterior grade oil, varnish or paint system, sealing the end grain and underside, replacing any fabric with outdoor rated material, and swapping steel screws for stainless or galvanised alternatives. Even then, the piece should be covered or brought under shelter during heavy rain and over winter.<\/p>\n
It is worth being clear from the outset: indoor furniture is built with different assumptions. Adhesives, boards and fixings are chosen for a stable, dry environment. Weatherproofing improves the odds considerably, but it does not turn a dining chair into a garden chair. Knowing which pieces are worth the effort saves both time and disappointment.<\/p>\n
Solid timber is the only material that reliably takes to outdoor conversion. Oak, beech, ash and pine can all be sealed successfully, because the timber itself can be sanded, treated and resealed year after year.<\/p>\n
Plywood can work if the edges are sealed thoroughly and the piece is kept under cover, since exterior plywood behaves reasonably well while interior grades delaminate once water reaches the glue lines.<\/p>\n
Chipboard, MDF and melamine faced board should stay indoors. These materials swell irreversibly when moisture penetrates the surface, and no coating will hold once the board underneath has moved. Similarly, high gloss lacquered furniture rarely survives outdoors: the lacquer is applied to a board substrate and any chip becomes an entry point for water. If you want a piece for a patio or balcony, purpose built garden furniture is the more sensible route, and our modern outdoor garden furniture UK sale<\/a> range is designed for exactly those conditions.<\/p>\n Start by working out what is already on the surface. Interior varnish, wax and water based lacquer are not designed to flex with the movement timber undergoes outdoors, so an exterior coating applied straight on top will lift within a season.<\/p>\n Remove the old finish with a chemical stripper or by sanding through it, working from a coarse abrasive around 80 grit up to 180 grit. Take particular care around joints and mouldings, where old finish tends to hide. Wax is the most stubborn: it must be removed completely with white spirit, because nothing will bond over it.<\/p>\n Once the surface is bare, wipe it down with a cloth dampened with white spirit or methylated spirit and let it dry fully. You are looking for a clean, dust free, evenly sanded surface with no shiny patches.<\/p>\n Any existing weakness will be exaggerated outdoors. Tighten loose joints, ideally by dismantling and re gluing them with a waterproof exterior wood adhesive rather than injecting glue into a gap. Fill splits and screw holes with an exterior grade filler that flexes slightly as the timber moves.<\/p>\n Check the underside and back panels, which are often left unfinished on indoor furniture. These are the surfaces that will absorb moisture first, and they matter more than the parts you can see. Sand them lightly so they take a coating properly.<\/p>\n If the piece has a fabric seat or padded panel, remove it entirely at this stage. Interior foam holds water and interior upholstery fabric rots. Both should be replaced later with outdoor rated equivalents.<\/p>\n There are three broad routes, and the right one depends on the look you want and how much maintenance you are willing to do.<\/p>\n Exterior wood oil, such as a decking or hardwood oil, soaks into the timber and slows moisture movement rather than forming a film. It leaves a natural finish, is easy to top up and never peels. The trade off is frequency: expect to reapply once or twice a year on furniture that sits outside.<\/p>\n Exterior varnish or yacht varnish forms a hard, glossy film with strong water resistance and useful ultraviolet protection. It looks smart and lasts longer between coats, but when it does fail it flakes, and repairing a patch means sanding back a wider area. Build up at least three thin coats, sanding lightly between each.<\/p>\n Exterior paint offers the best protection of the three because the pigment blocks ultraviolet light, which is what breaks timber down over time. Use an exterior wood primer, then two coats of exterior eggshell or satin. Paint hides the grain, so it suits painted or previously finished pieces better than fine timber.<\/p>\n Whichever system you choose, apply it in dry conditions above roughly ten degrees, and coat every surface including the underside, the feet and the inside of any cupboard or drawer.<\/p>\n End grain is where most outdoor timber fails. Cut ends behave like a bundle of straws and draw water up into the piece far faster than face grain, which is why chair legs rot from the bottom and table tops split at the ends.<\/p>\n Give every end grain surface at least twice as many coats as the rest of the piece. On legs, stand the item upside down and let oil or varnish pool briefly on the cut ends so it soaks in. This single step does more for the lifespan of converted furniture than any other part of the process.<\/p>\n Adding small rubber or plastic feet raises the legs a few millimetres off the ground, which stops them sitting in standing water on a patio or balcony. It is a minor detail with a large effect.<\/p>\n Interior furniture is assembled with mild steel screws, cam locks and brackets. Once moisture reaches them they rust, and rust both weakens the fixing and stains the surrounding timber.<\/p>\n Replace exposed screws and bolts with stainless steel or galvanised alternatives. Where a fixing cannot be replaced, treat it with a rust inhibiting primer before you coat the timber around it. Hinges, handles and runners should be exchanged for exterior rated versions or removed entirely if the piece can function without them.<\/p>\n Metal legs and frames need their own treatment: clean back any surface rust, apply a metal primer and finish with an exterior metal paint. Powder coated aluminium is the material that copes best outdoors, which is why so much purpose built garden furniture uses it.<\/p>\n Cushions and upholstery cannot be weatherproofed with a spray. Interior foam absorbs water, holds it for days and quickly develops mildew.<\/p>\n Use reticulated quick dry foam, which has an open cell structure that lets water pass straight through, and cover it with a solution dyed acrylic or olefin fabric. Both resist fading and mould far better than interior fabrics. Choose covers with a zip so they can be removed and dried, and add small mesh vents to the underside of the cushion if you are making them yourself.<\/p>\n Store cushions indoors whenever they are not in use. No fabric, however well specified, benefits from sitting wet through a British winter.<\/p>\n Weatherproofing is a maintenance routine rather than a one off job. Inspect the finish twice a year, in spring and autumn, and look for dull patches, hairline cracks and any bare timber showing at edges and joints. Touch these up promptly, before water has a chance to get in.<\/p>\n Use a breathable cover rather than a plastic sheet. Plastic traps condensation against the surface and can cause more damage than rain. Over winter, move the furniture into a shed, garage or covered porch if you possibly can. A few months under cover extends the life of a converted piece considerably.<\/p>\n Clean with warm water and mild soap, never a pressure washer, which drives water into joints and lifts coatings. Let the piece dry fully before replacing any cover.<\/p>\n Be realistic about the value of the exercise. Weatherproofing suits a solid timber bench, a simple table or a set of sturdy chairs that you already own and like. It rarely suits veneered furniture, anything with a board core, or pieces with complex mechanisms.<\/p>\n There is also a sensible middle ground. A conservatory, covered porch or sheltered balcony is far less demanding than open ground, and lightly treated indoor furniture often performs perfectly well there. If your space is genuinely exposed, choosing a purpose built outdoor garden dining sets UK sale<\/a> option will save repeated refinishing. We supply modern furniture for every room and for the garden at Furniture in Fashion<\/a>, with free delivery to most UK mainland postcodes.<\/p>\nStep One: Assess and Strip the Existing Finish<\/h3>\n
Step Two: Repair Before You Seal<\/h3>\n
Step Three: Choose the Right Protective System<\/h3>\n
Step Four: Seal the End Grain Properly<\/h3>\n
Step Five: Deal with Metal Fixings and Hardware<\/h3>\n
Step Six: Replace Soft Furnishings with Outdoor Rated Materials<\/h3>\n
Step Seven: Ongoing Care Through the Seasons<\/h3>\n
When Conversion Is Not Worth It<\/h3>\n