Description
This 10mm EPS is a grey polystyrene board, 1000 × 500 mm, and the thinnest of eleven thicknesses in the Renders World graphite board range. At 10 mm deep it is a board for places where depth runs out, not for insulating a whole wall.
One board covers 0.5 m², so two boards make a square metre.
10mm EPS: What You Get
- Size: 1000 mm long, 500 mm wide and 10 mm thick.
- Material: grey expanded polystyrene, listed in the shop as POLYSTYRENE EPS GRAFIT 10mm.
- Sold: by the single board, so you buy exactly the number of strips you need.
Where a Thin Board Fits
Choose 10mm EPS where only a thin layer will go in, for example a shallow window or door reveal next to an insulated wall that cannot take anything thicker. Where a specification asks for declared thermal and strength values, use the 20 mm board or thicker instead.
- Thinnest in the range: the EPS step below 20 mm, for the tightest gaps.
- Same face size as the rest: 1000 × 500 mm, like every board in the range.
- Bought one at a time: no need to take a full pack for a few reveals.
10 mm, 20 mm or 30 mm
The full range, thinnest first, with the pack each thickness comes in:
| Thickness | Sheets per m² | Full pack |
|---|---|---|
| 10 mm (this board) | 2 | order by the sheet |
| 20 mm | 2 | 30 sheets, 15.00 m² |
| 30 mm | 2 | 20 sheets, 10.00 m² |
| 50 mm | 2 | 12 sheets, 6.00 m² |
| 80 mm | 2 | 7 sheets, 3.50 m² |
| 90 mm | 2 | 6 sheets, 3.00 m² |
| 100 mm | 2 | order by the sheet |
| 150 mm | 2 | 4 sheets, 2.00 m² |
| 160 mm | 2 | 3 sheets, 1.50 m² |
| 180 mm | 2 | 3 sheets, 1.50 m² |
| 200 mm | 2 | 3 sheets, 1.50 m² |
The thickness of the main wall comes from a calculation of the whole build-up; the U-value and insulation thickness guide shows how that is done.
How Many Boards to Order
Every sheet of 10mm EPS is half a square metre, so a square metre takes two. Worked through:
- Lining 4 m² of reveals takes 4 ÷ 0.5 = 8 sheets.
- Strips are cut from whole boards, so count the EPS sheets you will cut, not the strip area.
Fitting
- Adhesive: pick a bonding mortar from the adhesives and basecoats for insulation boards range and apply it to the EPS as the adhesive's own instructions say.
- Layers: where the board sits in a rendered wall, from adhesive to finish, is set out in the EWI build-up and layers guide.
Ordering, Delivery and Returns
Renders World processes orders the same day when the stock is there.
- Delivery: quoted by the team after the order; parcels up to 25 kg go next day, pallets next day or in two business days on the economy option, always kerbside.
- Collection: from the counter at Unit 9A, Central Trading Estate, Southampton SO14 5JP, Monday to Friday 7am to 5pm and Saturday 7am to 12pm.
- Returns: goods bought directly from Renders World can go back within 14 days in their original condition; special orders and promotion purchases are excluded.
FAQ
What size is one board?
1000 × 500 × 10 mm, which is 0.5 m² of face. Two boards cover one square metre.
Which board should I use if I need declared values?
The 20 mm board and every thicker one come with declared values, including a thermal conductivity of ≤ 0.031 W/mK. Pick one of those where a specification asks for figures.
Can I insulate a whole wall with it?
A whole wall is insulated to a thickness set by calculation, and that means one of the thicker boards in the range. This board is for places where only 10 mm fits.
Can I buy just a few boards?
Yes. 10mm EPS is sold singly, so order exactly the number you need.
Guides for Planning the Wall