27. As we increase our insulation due to requirements in the Building Codes we create a greater Delta T. Delta T can be the temperature difference between the inside and the outside of a residence and anywhere where there is a difference of 8 degrees or more condensation will form. A fully sealed vapour barrier should be mandatory for any builder who does not want warranty calls for mould. Please remember mould is a warranty defect and condensation is very hard to prevent, if prevention is not properly applied at the beginning of construction the costs to rectifying this later are insurmountable in comparison PLEASE NOTE: Foil wraps generally don’t carry a warranty and being over 90% metal have the ability to corrode. We suggest using P2000 which has a 20 year product warranty. PREVENTION
28. Cavity fill vs. Continuous cover Thermal break
29. Only 16mm of P2000 is required to insulated the above configuration as per BCA
30. With only 9mm additional of product is equivalent to +6.0 R-Value in fiberglass