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Breathable HDPE triangle shade sail
Shade Sail Triangle – Breathable HDPE UV Protection Outdoor Sun Shade
Three anchor points instead of four, and eleven sizes — including uneven triangles for the corners a rectangle has nowhere to fix to.
Only three anchors
A house corner and two posts is enough, one fewer point than a rectangle.
Fits awkward corners
Uneven sizes follow a boundary, a gable or a fence line as it runs.
Sits flat, no sagging
Three points always land in one plane, so it pulls up flat and stays taut.
Air moves through
Heat rises away through the weave, so the shade below is not stuffy.
Free shipping Australia-wide
14-day returns
Secure checkout
Description
keyboard_arrow_downCreate a cooler, more comfortable outdoor space with this triangle shade sail. Designed for Australian outdoor living, the breathable fabric provides practical shade while allowing air to circulate underneath – ideal for patios, gardens, courtyards and poolside areas.
Made from high-density polyethylene (HDPE), this outdoor shade sail helps reduce direct sun exposure without trapping excessive heat beneath the fabric. Its breathable construction allows warm air to escape, creating a more comfortable shaded area on sunny days.
Whether you're shading an outdoor dining area, garden seating space or poolside zone, this HDPE shade sail provides a simple and effective way to create comfortable shade while maintaining airflow.
Unlike waterproof coated fabrics, the breathable shade sail allows air to pass through the material, helping create a cooler-feeling space underneath while providing practical protection from direct sunlight.
Returns & refunds
keyboard_arrow_downYou have 14 days from receiving your parcel to request a return or exchange. The item must come back complete and unused, in its original packaging, with the invoice included.
Email support@altisafe-pro.com first — we confirm your request and give you the return address at that point.
Shipping
keyboard_arrow_downFree delivery Australia-wide, on every order.
Orders are prepared within 1 to 2 business days, then take 5 to 10 business days in transit. You receive a tracking number once the parcel ships.
Real backyards have angles. The paving runs out on a diagonal, the boundary fence cuts across, there is one wall of the house and a single post, and the strip that gets the worst of the afternoon sun is exactly the strip with nowhere obvious to fix anything. So it stays empty, year after year.
A triangle works with those angles rather than against them. Three anchors, one of them often the house wall itself, and you have shade over the part that was unusable. The uneven sizes matter here — a 300 × 400 × 500 cm sail follows a boundary line the way a square never will. One thing to be honest about: this is uncoated breathable HDPE. Air and water pass through the fabric, so it shades the sun and does nothing about rain.
A triangle asks less of your yard than any other sail shape. Three fixings, one afternoon, and a corner that was too exposed to sit in becomes a place with a couple of chairs in it.
Photographed on an Altisafe Pro install. Your sail, shape and colour will differ.
The triangle is the shape that fits when the rectangle cannot. Fewer anchors to find, a fall built into the geometry, and sizes that are deliberately not symmetrical.
Three solid anchor points is a much easier ask than four. A wall, a pergola post and a single new post set in concrete will usually do it.
Sizes such as 300 × 400 × 500 cm and 500 x 500 x 700 cm are made for runs and corners rather than squares — match the longest side to your longest span.
A triangle can be rotated so its longest edge faces west, which is the direction the low, hot afternoon light comes from in most Australian yards.
Several triangles hung at different heights and angles will cover an area that no single sail shape would, and the overlaps read as deliberate rather than patched.
Nothing here needs a trade. What it needs is honest anchors and real tension. Ropes, turnbuckles and shackles are not in the pack, so buy them alongside the sail and match them to what you are fixing into.
Measure each of the three distances between fixings — all three, not just one. Subtract 30 to 40 cm per corner for hardware, then choose the sail whose three sides fit inside those figures.
Wall studs, brickwork, a solid pergola beam or a post set properly in concrete. A tensioned triangle pulls hard in three directions, and fascia boards and fence palings will not take it.
Fix two corners high and the third clearly lower. That single decision gives you the fall that sheds water and leaves, and it stops the sail looking limp from below.
Take up slack a little at a time at each corner in turn until the curved edges pull straight. Even tension is what keeps a triangle flat; pulling one corner hard first will twist it.
Order on the three distances between your fixing points, minus 30 to 40 cm at each corner for hardware. Equal-sided sizes suit open spaces where you are setting your own posts; uneven sizes suit spaces where the anchors are already decided for you.
A balcony corner, a doorway, or shade over a pair of chairs. The smallest in the range and the easiest to anchor.
The everyday size for a courtyard or a small seating area with three fixings roughly 3.6 m apart.
The uneven one. For corners between a house wall and two posts, or a strip running along a boundary.
The largest equal-sided size, for covering a whole entertaining area or a broad open lawn under one span.
TipIf your three measurements do not match any equal-sided triangle, do not force it — look at the uneven sizes first. And when you are between two options, take the smaller one, because a sail that will not reach cannot be tensioned.
Only the sail. No ropes, turnbuckles, shackles or posts — those depend entirely on whether you are anchoring into brick, timber or a freestanding post, so they are bought separately.
Measurements and materials exactly as listed for this product.
| Material | High-density polyethylene (HDPE) |
|---|---|
| Fabric | Breathable — air passes through, unlike waterproof coated fabrics |
| Waterproofing | None. Rain passes through the fabric |
| Shape | Triangle, in equal-sided and uneven sizes |
| Edges | Curved, to help achieve proper tension |
| Anchoring | Three corners |
| Colours available | Nine, listed in the colour selector |
| Sizes available | Eleven, from 200 x 200 x 200 cm to 600 x 600 x 600 cm |
| Fixing hardware | Not included |
| Suited to | Patios, gardens, courtyards, entertaining areas, poolside |
Two categories, the hardware that goes with them, and every measurement published before you order.
Answers drawn from this product's own specifications.
Measure all three distances between your fixing points and take 30 to 40 cm off each corner. If the three remaining figures are roughly equal, use an equal-sided size such as 400 × 400 × 400 cm. If they are not, go straight to the uneven sizes — 300 × 300 × 400 cm, 300 × 400 × 500 cm, 400 × 400 × 600 cm or 500 x 500 x 700 cm.
You need three. The usual answer is that two come from what you already have — a house wall, a pergola post, a carport upright — and the third is a new post concreted into the ground. That is a normal part of a sail install rather than a sign this is the wrong product.
Yes. Match the longest side of the sail to the longest distance between your anchors, and work around from there. Laying the sail out flat on the ground and checking it against your measurements before you climb the ladder saves a lot of time.
No. The sail is supplied on its own. Ropes, turnbuckles, shackles and posts are sold separately so you can choose hardware suited to your surface.
No. This is breathable HDPE with no waterproof coating — air and water both pass through it. That is deliberate, because it stops heat and wind loading building up under the sail, but it does mean it is a sun shade and not a rain cover.
Yes, and it is a common way to cover an area with no single anchor layout to suit one big sail. Hang them at different heights so the edges overlap rather than meeting flush, and tension each one independently.
Free shipping anywhere in Australia. Orders are prepared in 1 to 2 business days and transit typically takes 5 to 10 business days. Returns within 14 days. Checkout is secured by Shopify with PCI-DSS encryption, and support@altisafe-pro.com answers within 1 to 2 business days.
The evening one — a 3 x 3 m waterproof coated triangle with LED lights built in, for a corner that stays usable long after the sun has gone.View Waterproof triangle with bui
The striped waterproof triangle — grey or maple, coated for rain, for outdoor spaces where the look matters as much as the shade.View Striped waterproof triangle
The waterproof Oxford triangle — nine colours and eleven sizes, for people who want rain cover as well as shade over a patio.View Waterproof Oxford polyester
Shade the corner you have been walking past for yearsFree shipping Australia-wide, 14-day returns, secure Shopify checkout with PCI-DSS encryption. Send your three anchor measurements to support@altisafe-pro.com and we will tell you which of the eleven sizes fits, usually within 1 to 2 business days.
From $69.99Choose your size