SIP 204 panel ·
graphite EPS wall

A wall panel with a 180 mm graphite EPS core, for builds that need more insulation than the SIP 174.

Use: High-insulation wall
Format: Ask us
Panel U-value: ≈ 0.16 W/m²K*
Weight, approx.: In the data sheet
Price: Made to order: format, lead time and price in the quote

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Illustration: SIP 204 panel taken apart into layers, with a 180 mm graphite EPS core — Visualisation

Build-up and dimensions

* U: indicative calculated value, pending data sheet.

Joints and assembly

Outer face: OSB/3, 12 mm
Core: Graphite EPS, 180 mm
Inner face: OSB/3, 12 mm
Total thickness: 204 mm
CTE wall limit, zone B: 0.56 W/m²K
EPS density and tolerances: In the data sheet
Loads and spans: Per the project’s structural design
Jointing timber: C24, as calculated

Use and assembly

Made to order: format and lead time are set with your project. Outside, insulated render or a ventilated facade; inside, an EI 30 layer, usually plasterboard.

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Gabled house under construction among pines: SIP walls clad in white insulation boards, openings still without frames and a builder’s bag in front — Insulated walls, before the render · Real build, 11 Jan 2026

Data sheet on request.

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SIP 204 questions

Does the panel meet the CTE on insulation?

The panel’s U-value is below the CTE limit for zone B: SIP 174 wall, ≈ 0.24 W/m²K (limit 0.56); SIP 174 C roof, ≈ 0.24 (limit 0.44). Indicative calculated values, pending data sheet.

Does the panel carry CE marking?

Not yet: our own documents are being prepared. There is no harmonised standard for SIPs with OSB faces; CE marking comes through a European Technical Assessment (EAD 140022-00-0304). In Spain, a DIT or DAU also applies.