Insuglaze® is an insulated infill panel comprising 3mm high pressure laminate, which is bonded to both faces of a Styrofoam® core.

There are significant changes underway in the supply of Styrofoam the market leading extruded polystyrene. During 2018 Dow Chemical will cease the manufacture of blue Styrofoam and replace with a new improved product called Xenergy Styrofoam. This product will be grey in colour and offer the same mechanical properties but will provide improved thermal performance. The process of winding down stocks of blue Styrofoam is already underway with some grades already exhausted such as RTM, these will be supplied in the new improved grade of Xenergy. Other grades will be phased in over coming months. Full technical data sheets on the new improved product are available to download here and here.

Insuglaze is an insulated glazing panel based on Trespa – an external high pressure laminate, and Styrofoam – an extruded polystyrene. Insuglaze panels are designed to give architects and planners a high-performance, aesthetically-pleasing insulated panel suitable for use with all window systems including PVCu, steel, timber and aluminium.




Composite panel U Value
U Value required (W/M2K)
Styrofoam® LBH 13mm22mm27mm36mm67mm76mm88mm103mm124mm159mm214mm
Styrofoam® RTM ------75mm80mm100mm120mm-
Styrofoam® LBA 14mm23mm29mm38mm71mm83mm96mm112mm137mm174mm234mm
Phenolic Foam 8mm14mm18mm23mm43mm49mm56mm66mm79mm100mm132mm
Polisocyanirate (PIR) 9mm16mm20mm26mm49mm55mm64mm75mm90mm113mm156mm
Mineral Fibre Lamella16mm27mm34mm44mm83mm94mm110mm128mm157mm200mm267mm

Composite Panel insulation core selection data table

Performance Criteria Styrofoam® LBH Styrofoam® RTM Styrofoam® LB-A PhenolicMineral fibre Lamella Polyisocyanurate (PIR)
LPCB recognised option available
BREEAM compliant option available
Fire resisting properties
Fire retardant additive
Solid PVC Edge spacer required
CFC & HCFC Free option
Acoustic / Sound reducing properties
Approx Thermal Conductivity (K Value) 0.0330.0250.0360.0210.0410.026
Density (Kg/M3) 3340323710533
Compressive Strength (KPA) 30040030015040210
Reaction to fire (DIN 4102) B1B1B1B2A1B2
Class 'O' to building regs NoNoNoYesYes

Typical Edge Details

sq1SQ.1 Square edge
tr1TR.1 Tray with flange
tr1aTR.1a Tray with hard edge
sq2SQ.2 Square edge and taped
rb1RB.1 Rebated edge
sq3SQ.3 Square edge with solid edge surround
sq5SQ.5 Square edge with impact resistant layer
tr1bTR.1b Tray with impact resistant layer
tr1cTR.1c Tray with extended face returned on edge
tr3TR.3 To suit single glazing
tr4TR.4 Double tray
tr4aTR.4a Double tray with hard edge
tr5TR.5 Pressure/water resistant trayed panel
tr5aTR.5a Pressure/water resistant trayed panel with hard edge