CPS’s staff has experience of testing a wide range of commercial developments including retail units, office developments, schools, hospitals, supermarkets, sports centres and many more. We therefore can offer you advice to help obtain a compliant building first time.

Using CPS’s own designed and manufactured equipment we have the ability to air test small offices / industrial units up to buildings with an envelope area of 50,000m². The equipment ranges from small door fans to 7.5 tonne lorries with our fan on the back.

New Part L2A Regulation:

There is now a testing requirement for buildings above 500m² GIFA.

The test standard has changed for buildings over 500m²GIFA and is now based on the Air Leakage rate that is used in the DER calculation (Design Emission Rate)

Buildings below 500m² GIFA are only exempt from an air test if a leakage rate of 15 m³/m²/h is used to calculate the DER.

Normal and Best Practice:

Building Type

Air Leakage Rate in m³/h/m² at 50 Pa

 

Normal Practice

Best Practice

Building Regulations

10

 

Offices

 

 

Naturally Ventilated

7

3

Mixed-mode

5

2.5

Air Conditioned

5

2

Factories & Warehouses

6

2

Superstores

5

1

Schools

9

3

Hospitals

9

5

Museums

1.5

1

Cold Stores

0.3

0.2

 

 
Built by WEB21K 2008