This wall type is ideal for designs where the air tightness is greater than 3 and minimum U-values are desired.
This system utilises the existing 89mm or 140mm stud options and introduces thermal laminate Plasterboard, in combination with mineral or Glass fibre insulation between the studs. U-values ranging from 0.44 0.16 can be achieved. Sigma OP1 has the following benefits:
Lower cost insulation between studs, with a range of Lambda values
Retains 89 or 140mm studs, for manual or crane erection
Utilises plasterboard layer for air tightness delivery
Limits wall thickness and maintains existing foundation Reduces thermal bridging
Services accommodated within studwork and insulation zone
Utilises conventional skills and materials
Please note that these product properties are not a replacement for the manufacturer's literature and it is always recommended that Stewart Milne Timber Systems is consulted before specifying.
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