ATTMA and AIVAA Certification

Blower Door Services is a registered member of ATTMA

Member Number 4010, Level 2 & Passive House

The Air Tightness Testing & Measurement Association (ATTMA) is a UK-based company limited by guarantee, owned and operated by its members. It is also an operator of a “Competent Persons Scheme” for air tightness testing.
ATTMA is a professional association dedicated to promoting technical excellence and commercial effectiveness in all air tightness testing and air leakage measurement applications.
ATTMA air permeability figures are used in many Australian designed air tight buildings.

Blower Door Services is a registered member of AIVAA

Member Number 1010

The Air Infiltration & Ventilation Association of Australia (AIVVA) has a number of videos to help you better understand air tightness.