Short answer: we stock PIR 20/30/40 mm, stone wool and glass wool so you can finish a timber project in one delivery. We are not a specialised insulation shop with every brand and Rd package — we are a timber merchant with companion insulation from Meppel.
What we stock
- PIR sheets approx. 0.60 × 1.20 m in 20, 30 and 40 mm
- Stone wool and glass wool packs in common renovation thicknesses
Shop: insulation. Thickness guide: PIR thickness. Quantities: calculation tips.
Price honesty
Online discounters or B-grade promos can undercut on insulation alone. Our value is stock next to timber, advice and one project delivery; timber can be cut to size in our Meppel shop. We do not claim to be always the cheapest insulation metre.
When to use a specialist
For full new-build Rc packages, rare brands or complex building-physics calculations we prefer to refer rather than oversell. For garden buildings, canopies, renovation details and top-up insulation we are the right place.
Glass wool, rock wool or PIR?
| Product | Pack | Price | Per m² |
|---|---|---|---|
| Glass wool 50 mm | Pack of 9.72 m² | €46.25 | €4.76 |
| Rock wool 50 mm | Pack of 7.20 m² | €67.20 | €9.33 |
| PIR 20 mm | Board 0.60 × 1.20 m | €7.50 | €10.42 |
prices as of 6 November 2026, incl. VAT. The insulation value per thickness is on the product page.
- Glass wool is light, cheap per m² and clamps well between studs. Good for walls and pitched roofs.
- Rock wool is heavier and stiffer, keeps its shape better in a wall and is the usual choice where fire safety and sound matter more.
- PIR insulates most per centimetre. Use it where space is tight, such as on a flat roof or between floor joists.
Insulating a summer house or shed
Only insulate if you heat the space, for example as a workshop or office. An unheated store is better left well ventilated. The build-up of a wall, from inside to outside:
- Inner lining, for example OSB or plywood.
- Vapour control layer on the warm side (€1.10 per m, 1.50 m wide).
- Glass wool or rock wool between the studs.
- Breathable membrane on the outside.
- A ventilation gap of at least 20 mm and the cladding. See battens behind cladding.
Worked example: a 3 × 2 m shed with 2.20 m high walls has about 20 m² of wall after deducting the door. That is 3 packs of 50 mm glass wool (€138.75) or 3 packs of 50 mm rock wool (€201.60), plus 15 m of vapour control layer (€16.50). prices as of 6 November 2026, incl. VAT.
Which is better: glass wool or rock wool?
Glass wool is lighter and cheaper per m²: at Jan Sok €4.76 per m² in 50 mm against €9.33 per m² for 50 mm rock wool (prices as of 6 November 2026). Rock wool is heavier and stiffer, keeps its shape better in a wall and is the usual choice where fire safety and sound matter more. Both need a vapour control layer on the warm side.
How do I insulate a summer house?
Only insulate if you heat the summer house, for example as a workshop or office. From inside to outside: inner lining, vapour control layer, insulation between the studs, breathable membrane, a ventilation gap of at least 20 mm and the cladding. An unheated store is better left well ventilated.
FAQ
Do you stock XPS?
Check the insulation category for current stock; the core range is PIR plus mineral wool.
Can you produce a full Rd calculation?
For standard renovation we help with thickness choice. Official building-permit calculations need a specialist.