Sigma® OP2

Pre-insulated or open panel solutions

Op2 Open Panel

This wall type is ideal for designs where air tightness greater than 3, minimum U-values and thinner wall build ups than Sigma® OP1, are desired.

This system utilises the existing 89mm or 140mm stud options and introduces thermal laminate plasterboard, in combination with a partial fill polyurethane rigid insulation between the studs. U-values ranging from 0.37 – 0.14 can be achieved. Typically this wall solution suits projected 2013 regulations, CSH Level 4, FEES Compliance or Section 7 silver rated homes or walls requiring thinner build ups than Sigma® OP1.

Sigma® OP2 has the following benefits:

  • Improved thermal performance, with a range of insulation thicknesses
  • Utilises plasterboard layer for air tightness delivery
  • Retains 89 or 140mm studs, for manual erection
  • Limits wall thickness and maintains existing foundation
  • Reduces thermal bridging
  • Services accommodated within studwork and space formed in front of the rigid Insulation
  • Utilises conventional skills and materials
  • Option of factory fitted rigid insulation to achieve UKTFA class B fire protection during construction
  • Offers thinner wall build up than Sigma® OP1

SIGMA OP2 OPEN PANEL OR PRE INSULATED PANEL

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Homes For Scotland Home Builders Federation National House-Building Council Royal Institute of British Architects Structural Timber Association Timber Research and Development Association Constructionline British Board of Agrement Wood Campus Build Off Site Building Research Establishment WOOD FOR GOOD

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