Paul Testa

Architect Paul Testa explains why new build homes need to take a Blower Door Test to measure the airtightness of their property and meet building regulations

We answer the question 'what is a thermal bridge' and discover ways to design them out of your property to keep your home warm and cosy

Just what is airtightness? In this guide we explain why it is a key ingredient in creating an energy efficient home, what is it and how it is measured

Just what is a U-value? With achieving the highest possible levels of sustainability and performance for our homes now more important than ever, understanding this term is vital for all homeowners

Architect Paul Testa explains how the proposed Part Z could work in lowering carbon emissions from new buildings

Meeting the EnerPHit standard is the peak achievement for retrofitting an existing property to be energy efficient. This is what you need to know

Architect Paul Testa explains the problem of embodied carbon within construction and why self builders should be aware of potential new limits