SmartBuildUK

SIPs U-Values

Below is a selection of U-Value calculations for different thicknesses of Sips Eco Panels used in a roof and wall constructions. NB - because the SIP panel provides the bulk of the insulation, altering the roofing finish does not drastically affect the U-Value. All dimensions are nominal and within a tolerance of +/-3mm
Wall Type 1 = 102.5mm brick, 60mm cavity, breathable reflective membrane, SIP wall panel at specified thickness, vapour membrane, 25mm service batten, 12.5mm plasterboard, 3mm skim 
 
Wall Type 2 = 5mm render, 12mm MGO panel exterior, breathable membrane, SIP wall panel at specified thickness, 25mm service battens, 12.5mm vapour check plasterboard, 3mm skim. 
 
Wall Type 3 = 18mm Timber cladding, 50mm ventilated cavity, reflective breathable membrane, SIP wall panel at specified thickness, 25mm service batten, 12.5mm vapour check plasterboard, 3mm skim. 
 
Roof Type 1 = Standard clay tiles, 25mm tiling batten, 25mm counter batten, breathable roofing membrane, SIP roof panel at specified thickness, 25mm service void, vapour check plasterboard, 3mm skim. 
 
Roof Type 2 = Standard clay tiles, 25mm tiling batten, 25mm counter batten, breathable roofing membrane, SIP roof panel at specified thickness, 25mm service void, 50mm Thermaline super, 3mm skim.

Thickness: (mm)

Internal & External OSB Thickness; (mm)

Foam Core Thickness: (mm)

Weight: (kg/m2) 

U-Value as Wall Type 1: (W/m2) 

U-Value as Wall Type 2: (W/m2) 

U-Value as Wall Type 3: (W/m2). 

U-Value as Roof Type 1: (W/m2).

U-Value as Roof Type 2: (W/m2)