Triangular Outdoor Custom Cover | Made to Measure
Keep awkward triangular shapes covered – neatly and securely
Some furniture and equipment simply doesn’t fit into a standard rectangle. Our made to measure triangular outdoor custom covers are designed for those awkward, angled pieces – from sloping BBQs and outdoor storage to bespoke benches and machinery. Every cover is cut and sewn to your dimensions for a close, tidy fit that looks as good as it protects.
Premium waterproof fabrics in two protection tiers
Choose the fabric that matches how (and where) you use your outdoor space:
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Tier 1 – PVL 600D vinyl-coated polyester
Tough, waterproof and easy to handle – ideal for everyday garden furniture in typical UK weather. -
Tier 2 – P500UV laminated 500D polyester
Premium, UV-boosted fabric for year-round exposure, south-facing patios and coastal or windy locations.
Both options are:
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Fully waterproof and UV-resistant
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Tear-resistant with strong seam construction
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Easy to wipe clean with mild soapy water
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Suitable for garden furniture, equipment, storage and more
Simple measurements for a complex shape
The triangular cover follows the same numbering as our diagram (alt text: “diagram”):
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Height – from the ground to the highest point of the triangle.
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Side #1 – base side running along the front.
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Side #2 – second base side running along the depth.
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Side #3 – the angled side that completes the triangle.
Enter your measurements in cm following the dashed lines on the diagram. We add a small tailoring allowance so the cover slides on easily without looking baggy.
Tie-down options for windy spots
Customise how your cover secures in place:
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No tie-downs – simple drop-over for sheltered areas
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Elasticated hem – pulls the base snug all the way around
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Grommets & cord – tie to fixed points or legs
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Straps & buckles – extra security for exposed or high-value items
Each tie-down option is sewn to order as part of your cover.
Built for UK gardens, backed by real support
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Handmade to your exact triangular dimensions
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Neat finishing with reinforced stitching at stress points
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Designed to reduce flapping, pooling water and sun fade
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Friendly UK-based support if you’re unsure how to measure – just upload a photo and add notes at checkout
Give your awkward-shaped furniture or equipment the same smart protection as the rest of your garden.
Design 10 – custom triangular outdoor cover, made to measure by Shiny Sofas.
💳 Pricing & Payment Information
The price shown above is an instant estimate based on the measurements, fabric and options you select.
At checkout, a standard base price may be displayed — this is normal and is used to place the order.
✔️ Your final price is calculated from your measurements, as shown in the price estimate on this page.
✔️ Any difference is confirmed before production begins.
✔️ If an adjustment is required, we will contact you or issue an updated invoice before sewing starts.
By placing your order, you confirm your measurements and acknowledge that custom-made items are priced according to size and specification, not the base product price.
How the tie-down options work
Choose the tie-down style that best suits your garden and wind exposure. All options are sewn to order on your cover.
- No tie-downs – simple drop-over cover, ideal for sheltered patios.
- Elasticated hem + cord lock – shock cord sewn into the base with a toggle to cinch tight.
- Grommets + cord – reinforced metal eyelets around the base with cord to tie to legs or anchors.
- Straps & buckles – webbing straps pass under key points of the triangle.
You can see close-up photos of each option above in the product gallery.
Questions about this custom cover?
Send us your question using the form below and we’ll reply by email. We’ll also add common questions and answers here to help other customers.
Frequently asked questions
Are the triangular covers fully waterproof?
Yes – both fabric tiers are designed for outdoor use. Tier 1 (PVL 600D) is waterproof for everyday garden use. Tier 2 (P500UV) adds an extra PU + UV coating for maximum water resistance and long-term exposure.
Can I leave my equipment outside all year?
With Tier 2 (P500UV) and good ventilation around the cover, most customers use their covers all year round. We still recommend allowing items to breathe occasionally and wiping away standing water.
What if my measurements are a bit wrong?
We add a small tailoring allowance to help the cover slip on easily. If you realise you’ve measured incorrectly, contact us as soon as possible with your order number – if production hasn’t started, we can usually update the sizes.
Can you make covers for other complex shapes?
Yes – we can make covers for triangular, rectangular, L-shaped and more unusual layouts. Upload a photo and sketch in the notes and we’ll advise which option will fit and handle best.
Can you add cut-outs for cables or fixed legs?
In many cases, yes. We can add simple cut-outs, flaps or vents. Please upload a clear photo and describe what you need in the notes – we’ll confirm what’s possible and if there’s any extra cost before we sew your cover.
How do I clean the cover?
Brush off loose dirt regularly, then sponge clean with mild soapy water and rinse. Avoid harsh chemicals or machine washing, as these can damage the waterproof coatings over time. Always allow the cover to dry fully before storing.
Popular sizes & example prices
These examples use our live pricing calculator and show what typical triangular covers cost with both fabric tiers. Enter your own measurements above for an exact price.
Prices shown include fabric cost and our minimum order charge where applicable, based on a simple drop-over cover with no tie-down upgrade.