Gym Pit Foam Cubes, Blocks & Logs

Gym Pit Foam Specifications

All four grades are combustion modified polyether polyurethane, cut at our own factory in Bilston. Density is measured to BS EN ISO 845:1995 and hardness to BS EN ISO 2439. Premium and Standard are the same SF33 foam ordered to two different firmnesses, which is why they share a density and a datasheet.

eFoam gym pit foam grades, densities and typical applications

Grade	Foam	Density kg/m³	Firmness	Typically used for
Competition Grade (Blue)	SF38 datasheet	38 – 40	Firm, 180 – 220 N	BMX, motorcycle and skate pits, extreme sports
Premium Grade (Pink)	SF33/190 datasheet	31.4 – 34.6	Firm, 175 – 210 N	Trampoline parks and busy gymnastics clubs
Standard Grade (Green)	SF33/120 datasheet	31 – 34	Medium, 100 – 130 N	Gymnastics clubs, leisure centres, general use
Value Grade (Grey)	SF25/140 datasheet	22.8 – 25.2	Medium, 125 – 145 N	Community clubs and lower frequency use

Full technical data for every grade we manufacture is on our foam grades and types page. Figures are typical values to the stated test standards and are not guarantees of performance for a specific application.

Gym Pit Foam Blocks & Logs, Supplied & Delivered Across the UK

Gym pit foam is specialist polyurethane foam used to fill landing pits in gymnastics clubs, trampoline parks, skate parks, BMX and motorcycle facilities, ninja and parkour gyms, cheerleading gyms, soft play centres and extreme sports venues. Supplied as foam cubes, foam blocks and foam logs, it is far more than a simple cushioning material. The right gym pit foam is a critical safety component, absorbing the energy of falls and landings to protect athletes, beginners and professional competitors alike.

Whether you are filling a new pit from scratch or topping up an existing one, we cut every piece at our own factory and deliver free to mainland UK. Our Competition grade is cut from SF38 at 38 to 40 kg/m³, denser than any other gym pit foam on the UK market, where 33 kg/m³ is the usual maximum. Our guide to choosing foam for a foam pit covers grades, cube sizes and pit lining in more detail, and our foam grades and types page explains how each grade behaves.

At eFoam, all of our gym pit foam blocks and logs are manufactured to meet strict UK fire retardancy standards and are available with free delivery across mainland UK. Whether you need to fill a brand-new pit or top up an existing one, our free online calculator above takes the guesswork out of ordering, simply enter your pit dimensions, choose your foam grade and piece size, and we will calculate exactly how many pieces you need along with the total cost.

Choosing the Right Foam Grade for Your Pit

Not all foam pits are created equal, and selecting the correct grade of foam is one of the most important decisions you will make. The grade you choose directly affects how long the foam will last, how well it absorbs impact, and how safe it is for your specific application. Using the wrong grade can lead to premature deterioration, compressed foam that loses its cushioning properties, and in the worst cases, a safety risk to users.

We supply four grades of gym pit foam, each colour-coded for easy identification. Density and firmness are both listed in the specification table above, because the two are not the same thing: two foams can share a density and land very differently.

Competition Grade (Blue)
Cut from SF38 at 38 to 40 kg/m³, this is the densest gym pit foam available in the UK. Most suppliers top out at 33 kg/m³. At 180 to 220 N it is also the firmest grade we offer, which is what you want for BMX pits, skate parks, motorcycle foam pits and any extreme sports setting where bikes, boards and handlebars land at speed and from height. The extra density gives a supportive landing that protects equipment as well as riders, and it holds its depth under daily high-impact use far longer than lighter grades. Download the SF38 datasheet.

Premium Grade (Pink)
Cut from SF33 ordered firm at 175 to 210 N, the Pink grade runs 31.4 to 34.6 kg/m³ and is the firm version of our standard pit density. It shares its density with the Standard Green grade but is considerably firmer, which is what makes it suited to trampoline parks where users jump from height and the foam has to perform consistently over thousands of landings a week. It is also a strong choice for gymnastics clubs whose athletes train advanced skills repeatedly, where a softer grade would bottom out sooner.

Standard Grade (Green)
Cut from the same SF33 foam but ordered at 100 to 130 N, the Green grade runs 31 to 34 kg/m³ and matches the Premium Pink on density while being noticeably softer, giving a more forgiving landing. That combination makes it the most popular choice for gymnastics clubs, leisure centres and training gyms, where athletes are learning and falling rather than landing at speed. It delivers dependable impact absorption for regular use at a sensible price.

Value Grade (Grey)
Cut from SF25/140 at 22.8 to 25.2 kg/m³ and 125 to 145 N, the Grey grade is our entry-level pit foam and a cost-effective option for clubs working within tighter budgets. It suits lower frequency use such as community gymnastics clubs, children's activity centres, soft play and recreational facilities, giving reliable cushioning at an accessible price. For a pit in daily commercial use we would steer you to one of the denser grades, as lighter foam softens sooner under constant impact.

Foam Blocks or Logs? Which Shape is Right for You?

We supply gym pit foam in two key shapes: cubes and logs. Both work effectively in foam pits, and the choice between them often comes down to personal preference and the specific dimensions of your pit.

Cubes (15cm / 6” and 20cm / 8”) are the most widely used shape for gymnastics and trampoline pits. The cubic shape allows the pieces to pack together efficiently while still leaving adequate air gaps between them. These gaps are essential, they allow the foam to flex and compress upon impact, distributing the force of a landing across a larger area rather than concentrating it at a single point. Larger 20cm (8 inch) cubes are generally recommended for pits serving adult gymnasts or trampoline park users, while 15cm (6 inch) cubes suit smaller pits or junior facilities.

Logs (50cm x 10cm x 10cm and 60cm x 12cm x 10cm) offer a different packing dynamic. Their elongated shape creates a more interlinked fill, which can be advantageous in certain pit layouts and can help reduce the frequency with which individual pieces migrate to the edges or sink to the bottom of the pit.

How Deep Should a Foam Pit Be?

Depth is one of the most safety-critical factors in foam pit design. Industry guidance in the UK recommends a minimum working depth of approximately 2 metres (6-8 feet) for gymnastics and trampoline pits. This depth provides sufficient foam to absorb the energy of a fall without a user reaching the base of the pit.

A properly built pit has two layers beneath the loose fill, and they do different jobs. First, a thin closed cell liner sits directly against the pit structure, protecting the walls and floor and stopping debris working into the foam. We recommend closed cell polyethylene of at least 50mm (2 inches) for this, rather than the thinner 30mm mats some suppliers suggest. Second, a base layer of open cell sheet foam sits on top of that liner, typically 25-30cm (10-12 inches) thick, giving the pit its floor cushioning before the loose cubes or logs go in. We supply this base sheet foam cut to size, so whether you are building a new pit from scratch or relining an existing one, eFoam can provide everything you need in a single order. When using our calculator above, enter the full depth of the pit. There is no need to deduct the base layer yourself, as the calculator already accounts for it as well as the air gaps between the loose pieces.

Our calculator works to a 70% fill ratio, which is the accepted industry standard for loose pit fill. Foam cubes and foam logs do not pack solid, so 70% of the pit volume in foam gives a properly filled pit without paying for foam that would simply compress. Enter your full pit dimensions in metres and the calculator does the rest.

Do I Need to Replace My Foam?

Gym pit foam does not last forever. Over time, even high-quality polyurethane foam will gradually compress, lose its elasticity and begin to break down into smaller particles. The rate at which this happens depends on the density of the foam, the frequency of use, the average weight of users and whether the pit is used for extreme sports where equipment contacts the foam directly.

Signs that your foam needs replacing include a noticeable reduction in pit depth (as foam has compressed), visible fragmentation of individual pieces, and any reported increase in hard landings. Regular top-ups rather than full replacements, can extend the overall lifespan of your pit and reduce costs over time.

Fire Safety and UK Compliance

All gym pit foam supplied by eFoam meets current UK fire retardancy requirements. Fire safety in sporting and leisure venues is a serious regulatory matter, and it is important that any foam used in a public or commercial setting complies with the appropriate standards. Our foam is tested and manufactured to meet these obligations, giving venue operators and club managers confidence that their pit meets current safety requirements.

If you are unsure which grade or quantity of foam is right for your facility, or if you have a large or bespoke requirement, our team is happy to help. Call us on 0800 0439990 or contact us, we are always glad to talk through your project and ensure you get the right foam at the right price.

Why Buy Your Pit Foam From eFoam

We are a foam manufacturer, not a reseller. Every cube, block and log is cut at our own purpose-built factory on Barton Industrial Park in Bilston, West Midlands, where we have been converting foam since 1983. That means we control the grade, the cut and the lead time, and it is why we can give you a firm price online rather than asking you to ring for one.

eFoam has held ISO 9001:2015 accreditation continuously since May 2001, certificate number GB2004680, and we are members of Made in Britain and of FIRA, the Furniture Industry Research Association. Over 32,000 customers have left verified reviews of our service through Reviews.co.uk. You can read more about eFoam and our Bilston factory, or come and see it, the trade counter is open Monday to Friday.

For pit projects we can also supply the sheet foam that lines the base and sides, closed cell polyethylene for a firmer lining, foam block mats for floor work, and foam cut to size and shape for corner buffers, batons and bespoke pit furniture. If you supply a club, our guide to foam for gymnastics covers training aids as well.