Sometimes I am asked to carry out a certified air tightness test for Building Control sign off without a Design SAP calculation being available. I personally feel it’s really important for everyone (client, architect and builder) to know what your goal is with airtightness from the outset – whether it’s 10 or 0.1 and I’m not comfortable airtightness…

I was down at the Centre for Alternative Technology  (CAT) last week doing some lecturing and running a practical on airtightness for their Architecture Professional Diploma  students and the MSc Sustainability and Adaptation course. It was a great 2 days with loads of questions from the students – Prof Dip students on the Wednesday and…