WHAT MAKES THIS PRODUCT EFFECTIVE.
Higher the better
Low level vapour permeability and excellent airtightness are the most important advantages of OSB 4 in comparison to standard MDF, Chipboard and other plywood alternatives.
Also known as OS’brace, this material is approved and certified by engineers for bracing of walls. OSB 4 eases installation and goes hand in hand with wood fibre insulation systems to achieve Passive House airtightness, and increase the durability of the building envelope. OSB 4 is known to be more airtight and less vapour permeable than its neighbour, OSB 3.
15mm Thick (Untreated) 3m x 1.25m Sheets (3.75m2 per Sheet)
Can be used to create a service void
Can achieve Certified Passive House Airtightness
Can be used continuously on the underside of rafters or trusses or at ceiling level.
Can be used continuously on the inside of stud walls for bracing, Airtightness layer with taped joins and service void.