How To Make Waterproof Covers For Garden Furniture | DIY

Why Waterproof Covers Matter For Garden Furniture

Rain, frost, and strong sun can fade fabric, split timber, and rust metal fixings on outdoor chairs and tables. A snug waterproof cover keeps most of that wear away from the furniture and puts it onto a replaceable layer instead.

Store-bought covers do the job, but they often sag, flap, or leave parts of a bench or sofa exposed. Learning how to make waterproof covers for garden furniture gives you control over fit, colour, and fabric quality, so each piece of furniture gets the protection it needs.

Waterproof Fabric Options For Diy Garden Furniture Covers

The right fabric sets the base for every other step. You want something that sheds water, resists fading, and feels tough in the hand without turning into a stiff sheet of plastic.

Material	Best For	Pros And Trade-Offs
Polyester Canvas (Outdoor Grade)	Sofas, dining sets, loungers	Durable, widely available, takes waterproofing sprays well, can feel a bit stiff.
Acrylic Canvas	High sun exposure spots	Good fade resistance and water beading, often costs more than polyester.
Ripstop Nylon	Lightweight covers and small stools	Light to handle and easy to sew, can flap in strong wind unless weighted.
PVC-Backed Polyester	Wet, exposed balconies or roof decks	Near-total water barrier, but breathes less and needs vent gaps to avoid condensation.
Oilcloth Or Waxed Cotton	Smaller chairs and side tables	Classic look, sheds light showers, needs regular re-waxing to keep strong water beading.
Heavy Tarpaulin	Temporary winter wrap	Cheap and tough, but bulky and not shaped to the furniture, so it can trap puddles.
Upcycled Shower Curtain Or Sailcloth	Budget projects and covers for odd shapes	Good reuse of materials, already water-repellent, quality can vary.

For long-lasting covers, look for outdoor-rated fabric or canvas with a tight weave. Many makers pair a water-shedding outer fabric with a lighter inner layer to stop abrasion against the furniture itself.

Tools And Supplies You Need

You do not need a dressmaker’s workshop to sew waterproof covers for garden furniture. A basic domestic sewing machine, a few strong needles, and patience carry you through the project.

• Outdoor fabric from the list above, enough to cover each piece with a little extra for hems
• Strong polyester thread rated for outdoor projects
• Sharp scissors or a rotary cutter and mat
• Measuring tape, long ruler, and tailor’s chalk or a washable marker
• Sewing clips or pegs, which grip thick layers better than pins
• Elastic cord, webbing straps, or cord with toggles for fastening
• Optional: seam sealing tape, waterproofing spray, and metal eyelets with a setting tool

Fabric protectors such as Scotchgard Outdoor Water Shield are designed to repel water while still letting the fabric breathe, making them handy for home-sewn covers over time Scotchgard Outdoor Water Shield. For wider advice on caring for garden furniture in different seasons, the Royal Horticultural Society page on maintaining outdoor seats and tables gives clear, practical guidance RHS garden furniture care advice.

How To Make Waterproof Covers For Garden Furniture Step By Step

This is the core method for anyone who searches how to make waterproof covers for garden furniture and wants a clear path from bare patio set to well-fitted cover. Adjust the measurements to suit each chair, bench, or table, but keep the same order of steps.

Measure Your Furniture Carefully

Start with clean, dry furniture on a flat surface. Measure width, depth, and height for each piece, and write everything down. For chairs and sofas, measure from the ground to the top of the back, the deepest point of the seat, and across the arms.

Add at least 8–10 centimetres to each measurement for ease and hems. That extra space lets the cover slide on and off without strain and gives room for tie points or a drawcord along the bottom edge.

Draft A Simple Cover Pattern

You can draw pattern pieces straight onto the fabric, but many people prefer to mock them up with old sheets or craft paper. The most common shapes are box covers, which use rectangles for the top, front, back, and sides.

Lay out the top panel first, then sketch or mark each side panel so that the edges meet neatly at the corners. Label each edge so that you know which sides join, then mark seam allowances of 1.5–2 centimetres along every edge.

Cut The Fabric

Double-check measurements before cutting. Lay the fabric flat, line up the grain, and cut slowly with sharp scissors or a rotary cutter. Keep pattern pieces for pairs, such as two identical side panels, stacked so that they stay mirrored.

If your fabric has a right and wrong side, mark the wrong side lightly so you do not lose track once pieces pile up beside the machine. Stacking each set of panels in order of sewing makes the next stage feel less stressful.

Sew Strong, Water-Resistant Seams

Use a longer straight stitch length than you might use for clothing, since thick outdoor fabric needs more room between needle holes. Begin by joining side panels to the top, right sides together, then sew the vertical corners.

Press or finger-press seam allowances to one side. To help keep water out, you can top-stitch each seam so that it lies flat and forms a small ridge that sheds drips. For covers that face heavy showers, add seam sealing tape along the inside of each seam.

Add Hems, Casings, And Tie Points

Turn up the lower edge of the cover by 2–3 centimetres, then turn it up again to hide the raw edge. Stitch around the hem once or twice, leaving small gaps if you want to thread cord through as a drawstring.

To stop wind lifting the cover, sew short lengths of webbing with hook-and-loop tape or ties at the corners and midpoints. These fasten around chair legs or table stretchers and keep the cover in place without tight knots.

Making Waterproof Covers For Garden Furniture At Home

Some readers want to batch-sew covers for a whole seating set. In that case, cut and sew similar pieces in groups. Sew all the top seams at once, then all the corners, then all the hems. This routine speeds things up and keeps thread colour consistent across the set.

Homemade covers can match cushions, planters, or the trim on a shed. Choose colours that feel calm in your outdoor area and that hide marks from leaves or dust. Dark green, charcoal, and taupe shades tend to stay smart between washes.

Once all the covers fit, spray them with fabric protector if your chosen material needs extra help. Check the spray instructions for distance, drying time, and ventilation, and work outdoors or in a well-aired space.

Waterproofing And Sealing Your Diy Covers

Even outdoor-rated fabrics benefit from a fresh water-repellent finish every year or two. Sprays, wash-in treatments, and wax pastes each suit different fabrics and weather patterns.

Waterproofing Method	Best Match	Care Tips
Spray-On Fabric Protector	Polyester and acrylic canvas, ripstop nylon	Apply in thin coats on clean, dry fabric and allow full drying before use.
Wash-In Waterproofing	Removable cotton or poly-cotton covers	Run through the washing machine on a gentle cycle, then air dry fully.
Wax Or Oil Dressing	Waxed cotton and some canvas blends	Work in with a soft cloth and low heat from a hair dryer to smooth the finish.
Seam Sealing Tape	High-stress seams and corners	Bond with a warm iron or according to product instructions to block seepage.
Clear Silicone Sealant	Eyelets and stitched-on patches	Dab onto thread lines and allow to cure fully before stretching the cover.

Test water-repellent finishes with a quick hose or watering can once they cure. Water should bead and roll away. If you see dark wet patches that soak into the fabric, add another light coat to those areas.

Ventilation, Fit, And Safety Tips

A perfect waterproof shield can still cause trouble if air never moves underneath it. Trapped moisture from damp cushions or morning dew can turn into mildew on timber and fabric. Breathable fabric and small vent panels near the top edges help prevent that.

Leave a little gap at the base of each cover so air can move, and avoid wrapping the lower hem tight around table or chair legs. In warm weather spells, peel covers back on dry days so any trapped dampness can escape and surfaces can dry in the sun.

A snug fit matters for wind. Covers that billow and snap can strain stitching and even tip light furniture. Add extra ties at the windiest corners of your garden, and if your balcony is exposed, store light cushions indoors while leaving the frames under cover.

Care Schedule For Homemade Waterproof Covers

Plan a simple care routine. Shake off leaves and dust in wet seasons, and twice a year take each cover off for a deeper clean.

Wash with mild soap and lukewarm water, rinse well, let the fabric dry fully, then check seams and ties for wear so you can restitch or reproof them.

When A Shop-Bought Cover Makes Sense

Home sewing suits straight-edged chairs, benches, tables, and storage boxes. Extra-large corner sofas, hanging chairs, or parasols with many arms can be awkward to measure and sew, so a shaped commercial cover can save time.

You can still mend or tweak bought covers by shortening hems, adding new ties, or sealing seams, using the same basic method you used for your homemade covers when they age.