Foam Mattress Cut to Size

Foam mattresses cut to size, made to your exact measurements. Bunk beds, campervan beds, boat berths, day beds, antique frames and lofts — if the bed is not a standard UK size, you do not have to compromise on the mattress. Give us length, width and thickness and we cut it.

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Which foam to sleep on

Sleeping is a different problem from sitting. A seat carries your weight through a small area for a few hours; a mattress spreads it across your whole body all night, and the thing that matters is whether your spine stays level while your shoulder and hip get somewhere to sink into.

  • White, 28 kg/m³ — a conventional foam mattress feel. Supportive, springs straight back, no sinking sensation. The right choice for most beds, and for anyone who dislikes the feeling of being held by the mattress.
  • Memory foam, 60 kg/m³ — softens with body heat and moulds to your shape. Better for pressure relief on hips and shoulders, and for side sleepers, who need more give at the shoulder than a flat foam allows.

Blue 33 kg/m³ is our seating grade. It will do as a bed at a push — a spare bunk, a guest berth — but it is firmer than most people want to sleep on night after night.

Thickness is the decision that matters most

People agonise over density and then order a mattress too thin. Thickness is what stops you feeling the base.

  • Under 8 cm — a topper or an occasional guest berth, not a mattress
  • 10–12 cm — bunks, campervan beds, day beds, children's beds
  • 15 cm — a proper adult mattress for regular use
  • 18–20 cm — heavier adults, or where you want a substantial hotel-bed feel

The heavier the sleeper, the more thickness does for them. A 10 cm foam mattress that suits a child will bottom out under an adult on their side, because the hip concentrates weight into a small area.

Memory foam needs something underneath it

A point that catches people out. Memory foam on its own is not a complete mattress — it compresses under load and needs a firmer layer beneath to stop you sinking through to the base.

The usual build is a memory foam top layer of 5–8 cm over a White foam base of 10–15 cm, ordered as two pieces and simply stacked inside one cover. That gives you the pressure relief on top and the support underneath, which is how a bought memory foam mattress is constructed.

Ordering a single 15 cm block of memory foam will feel wrong: too soft, and you will feel the base through it.

The base underneath, and why mattresses fail from below

Foam needs to breathe. A body loses moisture overnight, and that moisture has to go somewhere. On a solid, sealed base — a ply platform in a van, a boarded bunk, a boat berth — it condenses underneath the mattress where you never see it, and mould starts on the underside.

If the base is solid: drill ventilation holes, use slats, or fit a spacer membrane. Lift and turn the mattress regularly, and stand it on edge when the bed is not in use for a while. This is not a foam quality issue — every mattress on a sealed base has it.

Common non-standard beds

  • Bunk beds — frequently 190 × 75 cm rather than a standard single, and often with a low safety rail that limits thickness
  • Campervans and motorhomes — almost never standard, and often tapered at one end
  • Boat berths — usually shaped to the hull, with one long edge on a curve
  • Antique and continental frames — older UK and European beds predate current sizing
  • Day beds and window seats — a mattress that has to look like seating

Sizes we can cut

  • Maximum single piece: 203 cm × 116 cm (80 × 46 inches)
  • Thickness: 1 cm to 100 cm

Anything wider than 116 cm — a double, king or a wide van bed — is made as two pieces side by side inside one cover. The join runs down the length of the bed. With a cover and a topper over it you will not feel it, and it is how many bought mattresses are built anyway.

Shaped berths with a curved edge: order a rectangle that encloses the shape and cut it to a cardboard template with an electric carving knife, or contact us for a quote on a shaped cut.

Never roll packed

Compressed mattresses need days to recover and do not always recover evenly. Ours is cut to order and dispatched at full loft — it is ready the day it arrives.

Is your foam fire retardant?

Yes. The foam we cut is supplied to meet the UK Furniture and Furnishings (Fire) (Safety) Regulations 1988, at no extra cost and on every grade we sell — white, high-density blue and memory foam.

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