The mortgage provider stipulated a required energy rating of B, making insulation and airtightness key to the brief. Frame Technologies used their TechVantage™ S system, which uses a breathable wall principle and natural insulation. This system enabled Frame Technologies to construct the cottage self build on a budget while meeting the brief’s requirements. Using recycled glass wool timber batt and a PIR liner board with full airtightness detailing and service battens to insulate the external walls, the system achieves an optimum U-value of 0.14 W/m2K.
To further achieve maximum thermal performance, Frame Technologies used tophung metal web floor joists and constructed the roof from glulam laminated roof purlins with double bob tail trusses, which are situated between the rafters to form the dormer roof area. Frame Technologies also inserted airtightness rips during the construction phase and advised on sealing joins when adding further insulation to the interior. Having secured outstanding thermal properties, the homeowners will be able to make considerable savings on energy costs during the entire lifetime of the home, continuing their low-budget home plan indefinitely.