The Ark Mat 12mm Smooth Black Rubber Gym Mat is a 6ft x 4ft (1.82m x 1.22m) mat of solid natural rubber, 12mm thick, with an anti-slip top and handles on the underside. The maker says it suits free weights and heavy-duty use but publishes no weight or drop rating.
What does Ark Mat say the 12mm gym mat is?
Ark Mat, trading as ARK Rubber and Resin Solutions, lists the product as "Smooth Black Rubber Gym Mats" in 12mm and 17mm thicknesses, described as "solid, top-quality natural rubber with a new anti-slip surface top" (Ark Mat product page). The finish is black, non-marking and non-glaring, and the material is non-porous and non-absorbent.
The maker lists these benefits: slip resistance when wet, thermal insulation from a cold floor, cushioning and shock absorption for free weights, home gyms, treadmills and children's rooms, and reduced floor damage and noise. It also states the mats will not swell, curl, lift, tear, split, stretch, crack or shrink, and that they are "designed for gym use and heavy-duty commercial use". These are the maker's claims; the page gives no test standard or figure behind them.
What is in the maker's specification?
The table lists every figure the maker's page gives for this mat, with gaps marked "Not published".
| Item | Ark Mat page |
|---|---|
| Size per mat | 6ft x 4ft (1.82m x 1.22m) |
| Area per mat | 24 sq ft (2.22 sq m) per the maker's calculator |
| Thickness | 12mm (a 17mm version is also sold) |
| Material | Solid natural rubber, non-porous, non-marking black |
| Underside (12mm) | Handles for moving; the 17mm version has grooves instead |
| Quantity per order | 1 to 100 mats |
| Weight per mat | Not published |
| Load or drop rating | Not published |
| Hardness or density | Not published |
| Warranty | Not listed on the product page |
The maker's own price for one 12mm mat is £51.95 on the option table; this site tracks it at around £53.95 (checked Oct 2026). Confirm the current figure on the maker's page, because the listing shows a different headline "from" price for the range.
How many 12mm mats does a home gym need?
One mat covers 2.22 square metres, so a single mat is a station-sized patch and larger floors need several laid edge to edge. The sums below are arithmetic from the published size, not a maker recommendation.
- Two mats side by side on the long edge: about 3.64m x 1.22m.
- Two mats side by side on the short edge: about 1.82m x 2.44m.
- Four mats in a 2 x 2 block: about 3.64m x 2.44m, or 8.88 square metres.
The maker provides a mat calculator for working out quantities. The mats are plain rectangles with no interlocking edges mentioned, so they butt together rather than lock. A planning tool such as the site's home gym planner helps sketch the floor before ordering, and the garage gym essentials guide covers where flooring sits in a garage build.
Is a 12mm rubber mat thick enough for dropped weights?
The maker says the mat provides shock absorption for free weights, but it publishes no drop-height or weight limit, so the page does not say what 12mm tolerates. Anyone loading a barbell should read that as "intended for free-weight areas" rather than as a tested rating, and should check the equipment maker's own flooring advice.
Reasoning from construction, solid rubber at 12mm is a denser build than a foam-core tile, which is why the site's rubber flooring vs foam mats guide treats solid rubber as the step up for weight work. Thickness is a separate question from subfloor: a mat spreads load but does not change what the floor below can carry, a point the heavy weights flooring guide expands on. Under a rack, the GYM MASTER Adjustable Power Rack review shows the footprint a mat has to cover, and the home gym safety tips cover lifting alone.
What should be checked about care and finish?
Ark Mat warns that new mats may carry mould release agent residue, which it says is easily removed with household detergent and wears off with use. It also says moulding marks and mould flash along the edges are normal and not defects, and that flash can be trimmed with a suitable knife. A buyer who expects a perfectly clean edge should know this in advance.
The 12mm version has underside handles, which the maker offers for easier moving. The page does not publish a weight, so the carry should be planned around a heavy rubber item that is awkward on stairs; rubber of this size is not a flat-pack tile. For homes where lifting is a concern, the renters guide covers equipment that is easier to move and remove.
What are the delivery and returns terms?
The site banner states "free delivery on most store items", and the product page carries no delivery times or carrier details. The returns page says products carry a manufacturer's guarantee and that a defective item can be returned for a refund of the original price after an RNA is requested by email (Ark Mat returns page).
For other reasons the buyer must contact the company first. Returns and exchanges are not accepted more than 7 days after delivery, items must be clean, saleable and free of rips, tears or markings, all returns are at the company's discretion, and unless agreed in advance a return shipping or collection fee and a 20% handling fee where appropriate may apply. That is a shorter window than the 14-day cancellation right that GOV.UK says applies to most online purchases, so buyers should read the statutory position too (GOV.UK); the page itself does not say how the two interact.
How does the 12mm mat differ from the 17mm option?
The 17mm mat is the same 6ft x 4ft size from the same listing, priced by the maker at £72.95 against £51.95 for the 12mm. The page notes that the 17mm underside has grooves and is not completely flat, whereas the 12mm underside carries handles. Ark Mat does not publish a comparison of shock absorption or weight between the two, so the extra 5mm cannot be tied to a stated performance gain; it is simply a thicker mat at a higher price. Anyone torn between the two should ask the maker what each is intended for, and weigh the floor underneath as much as the mat.
What does the maker not publish?
Before ordering, a buyer should know the gaps on the product page: the weight per mat, any drop or load rating, rubber hardness or density, a warranty period, installation guidance, and delivery times for the product. The listing also does not say whether mats can be cut by the buyer, so a cut-to-fit plan should be confirmed with Ark Mat first. For a room that is not a neat multiple of 1.82m and 1.22m, that matters: the arithmetic above leaves gaps at the edges that need either spare space or a cut mat. The returns page lists a phone number for questions, which is the practical way to close these gaps before paying.
Price context
This site tracks one 12mm mat at around £53.95 (checked Oct 2026). Scaling that to four mats is simple multiplication rather than a quoted price, and quantity pricing on the maker's site may differ, so the figure for a full floor should come from the maker's order page. Compared with foam tile packs, solid rubber costs more per square metre, which is the trade the budget home gym guide asks buyers to weigh against the training planned.
Who should skip this mat?
Skip it if the room needs one continuous surface, because the mats are separate rectangles. Skip it if a published warranty, weight or drop rating is required for the decision, as none is on the page. A buyer who wants a full-room interlocking floor should look at the best home gym flooring UK guide and compare formats.
