Based in Malton at the heart of Ryedale, with the ability to conduct tests anywhere in the country, Ryedale Air Tightness Testing are the perfect choice for air tightness testing We have more than 35 year's experience in the construction industry, with an RIBA accredited architect and former associate of one of the UK's leading architect practices We take the hassle out of testing & SAP calculations by providing a quick In accordance with the most recent building regulations approved document L1A, we are licensed to air tightness test all domestic properties and issue certificates as required If you urgently need a test within 72 hours use our emergency service