36
EXTERNAL ENVELOPE; SUSTAINABILITY SPOTLIGHT
Wraptite® T
external air barrier helps to create state-of-the-art learning environment
he specifi cation and installation of
A.Proctor Group’s Wraptite®
external
air barrier is helping three separate secondary school projects in Scotland to achieve the Passivhaus standard. As a result of the high-quality new school buildings, more than 4,500 pupils will benefi t from learning in thermally comfortable classrooms with excellent indoor air quality. The external walls of each new school are constructed in a slightly different way, showing that the Passivhaus standard can be achieved using different construction methods. Building on and using its sustainable construction expertise,
main contractor
Robertson Construction Tayside ensured the standard was capable of being met on these three projects.
A similar procurement process to Riverside Primary meant that using Wraptite satisfi ed the requirement for using local suppliers, on top of the experience gained in using it to meet the airtightness requirements.
helping to meet the standard’s high levels of airtightness. By moving the airtight line to the exterior face of the wall structure, it avoids a lot of complex detailing around services and other penetrations that typically occur at the internal face.
As a fully-adhered vapour permeable membrane, Wraptite saves on labour and material costs,
Perth High School is a concrete frame with mineral wool insulation and a facing brick facade. The school buildings to the other two campuses feature a mix of concrete and steel frame, with high performance insulation. Facing brickwork is the fi nish at Monifi eth, while East End Community Campus will have fi nishes of facing brickwork, precast concrete and cladding. Wraptite is well-suited to Passivhaus projects, and the different
construction methods demonstrate its versatility in without compromising
airtightness levels and without increasing condensation risk within the structure. Not all detailing issues can be avoided, of course, and where particular areas of detailing do need to be addressed there is the added benefi t of Wraptite tape.
On-site quality checks are a hallmark of the Passivhaus standard and accreditation. The simple solution offered by Wraptite allows those checks to be carried out with the minimum of fuss.
01250 872 261
proctorgroup.com/products/wraptite
WWW.ARCHITECTSDATAFILE.CO.UK
ADF JULY/AUGUST 2025
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