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Once we have tested your building and determined an appropriate level of air tightness we can provide a certificate of compliance which we will provide by post or fax. We will also send a copy of the certificate to your building control office. The following text is the official advice given in the UK Building Regulations;

In order to demonstrate that the specified air permeability has been achieved, regulation 20B states;
1. This regulation applies to the erection of a building in relation to which paragraph L1(a) (i) of Schedule 1 imposes a requirement.


2. Where this regulation applies, the person carrying out the work shall, for the purpose of ensuring compliance with regulation 17C and paragraph L1(a) (i) of schedule 1
a. ensure that
i. Pressure testing is carried out in such circumstances as are approved by the Secretary of State and
ii. the testing is carried out in accordance with a procedure approved by the Secretary of State and
b. subject to paragraph (5) give notice of the results of the testing to the local authority.

3. The notice referred to in paragraph 2(b) shall
a. record the results and the data upon which they are based in a manor approved by the Secretary of State and
b. be given to the local authority not later than 7 days after the final test is carried out


4. A local authority is authorised to accept as evidence that the requirements of paragraph 2(a) (ii) have been satisfied a certificate to that effect by a person who is registered by the British Institute of Non-destructive testing in respect of pressure testing for the air tightness of buildings


5. Where such a certificate contains the information required by paragraph 3 paragraph 2(b) does not apply
The approved procedure for pressure testing is given in the ATTMA publication 'Measuring Air Permeability of Building Envelopes'
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Download a copy of Part L1a Building Regulations

Click here to download a PDF of Part L1a of the UK Building Regulations

 

Click here to download a PDF of the ATTMA publication 'Measuring Air Permeability of Building Envelopes'

Download a copy of the ATTMA Precedure

Anglia Air Testing Ltd, Clayland House, 1 Norwich Road, Watton Norfolk IP25 6DA

Tel: 01953 880999  Fax: 01953 889960  Email: sales@angliaairtesting.co.uk

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Registered Office: 102 Prince of Wales Road, Norwich, Norfolk, NR1 1NY

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