Outdoor Rug Sizes and GSM: Choosing Between 3x5 and 9x20 ft

Buyers often ask us for a price on "a medium outdoor rug, standard weight". There is no standard. A mat that is right under a two-chair patio set will look lost under a caravan awning, and a weight that works for a beach mat you carry in a bag will feel thin on a patio walked on every day.

We make woven polypropylene rugs from 3x5 ft up to 9x20 ft, in 300 to 600 GSM. That range covers most trade uses we see. The job is matching size and weight to the place the mat will actually live, not picking the middle of a price list. Start with the full range on our outdoor rugs page, then work through the checks below.

Size first: measure the ground, not the catalogue photo

Catalogue photos lie by accident. A rug photographed on an empty deck looks generous until two chairs, a table and a person's feet have to fit on it.

Do it the plain way. Measure the area. Leave a border of bare ground or decking around the mat if you want it to read as a defined space, or run it close to the edge of an awning if the point is covering dirt and stones. Buyers for retail ranges should think in the sizes a customer can picture in their own garden. "Large" means nothing. 6x9 ft under a table means something straight away.

A few worked examples from sizes we regularly make:

Small patios and balconies. A 3x5 or 4x6 ft mat sits under a bistro set without curling up a wall or hanging off a step. It is also the size a customer can shake out alone. If your range is aimed at apartments, do not start at 9x20 and work down.

Family patios. Around 6x9 to 8x10 ft is where a table, chairs and walking room start to coexist. Chair legs matter here. If the back legs sit off the mat every time someone pushes a chair back, the mat is too small, whatever the photo showed.

RV and caravan awnings. This is a different brief. The mat has to cover the living area under the awning. Our larger sizes, up to 9x20 ft, exist for this reason. Measure the awning footprint, then check the folded size too. A big mat that will not fold back into its bag after the first trip will get returned for a reason that has nothing to do with quality. Our camping and RV mats page sets out that use in more detail.

Beach and picnic. Smaller and lighter usually wins. The mat gets carried, shaken, folded wet, and shoved in a car. A huge, heavy mat may photograph well and still be the wrong product.

What GSM actually tells you

GSM is grams per square metre. It is weight, not a quality badge on its own. Within our 300 to 600 GSM range, the question is what the mat has to put up with.

At the lighter end, a mat folds smaller, carries easier, and suits beach, picnic and occasional use. It will also move more in wind and show the ground under it sooner. That is not a fault. It is a trade-off you should choose on purpose.

In the middle is where most patio and general outdoor rugs sit. Enough body to lie reasonably flat, still manageable to fold and wash down.

At the heavier end, a mat feels more substantial underfoot, resists shifting, and suits large RV, patio and high-use areas. It also takes more room folded, costs more to ship per piece, and needs a customer who understands why they are paying for weight. Weight without a reason is just freight.

If a supplier quotes you a GSM, check it. Cut a 10 x 10 cm swatch, weigh it, multiply by 100. We explained that check in how polypropylene mats are made because it takes two minutes and settles arguments that emails never do. Ask for a cut swatch with your sample if you do not want to cut the sample itself.

Size and GSM work together

This is where briefs go wrong. A buyer asks for the largest size at the lightest weight to hit a price, then wonders why the mat will not sit flat. A 9x20 ft mat is a big sheet of woven tape. At too light a weight it can feel restless underfoot and fold lines become more obvious. At a sensible weight for its size, it settles better and handles daily use.

The reverse happens too. A small beach mat made very heavy loses the one thing it was for: carrying. No customer thanks you for a picnic mat that feels like gym equipment.

So write the brief in this order: where will it be used, what size covers that place, how often will it be walked on, does it need to fold into a bag. Then pick GSM. Suppliers who push you to pick GSM first are usually pushing what is already on their loom.

Our PP mats page explains the material side, and the patio mats page is worth reading if your range is patio-led rather than camping-led.

Finished size, not approximate size

Put finished size in writing in the order. "Approx. 6x9 ft" can hide enough variation to matter at the large end, and it makes your own product listing hard to write honestly. Measure samples corner to corner and check both diagonals. If the diagonals differ, the mat will not sit square, and no amount of marketing copy fixes that on a customer's deck.

Also check size after folding. Retail buyers: fold the sample the way your customer will, put it in the bag or pack format you plan to sell, and carry it across the room. You will learn more in that walk than from a spreadsheet.

A short way to brief us

Send the use, finished size, target GSM range, design, and whether it needs a carry bag or your own label. If you are not sure on GSM, say so and describe the use honestly. We will suggest a weight in our 300-600 range and send a paid sample, credited against your order, so you can stand on it before you commit. Minimum order is 500 pieces per design, production 30-45 days.

Do not approve size and weight from photos alone. Stand on the sample, fold it, hose it, leave a chair on it overnight. That is how a size chart becomes a product your customers keep.

Frequently asked questions

What outdoor rug size should I stock first? Start where your customer will use it. Small patio sizes for apartment and balcony ranges, mid sizes for family patios, larger sizes up to 9x20 ft for RV and awning use. One well-chosen size sells better than a vague range.

What GSM is best for an outdoor rug? There is no single best. Lighter weights in our range suit beach and picnic mats that must fold small. Heavier weights suit large, high-use patio and RV mats. Match GSM to use and size, then check a sample.

How do I check GSM on a sample? Cut or request a 10 x 10 cm swatch, weigh it in grams, multiply by 100. That gives grams per square metre.

Can you make sizes between 3x5 and 9x20 ft? Our range runs from 3x5 to 9x20 ft. Tell us the finished size you need and the use, and we will confirm what works in that range.