CWCT Testing
The onsite testing offered by BFRC is in line with the CWCT (Centre for Window and Cladding Technology) Standards for systemised Building Envelopes, TN41, BS EN 13051:2001 and the NHBC Chapter 6.9 S17 and S18.
CWCT testing is an effective way to check that the building envelope is performing as expected, especially for modern buildings that incorporate complex cladding and glazing systems. The onsite CWCT standards are recognised across the UK are becoming a regular requirement for warranty providers.
Onsite CWCT testing evaluates the ability of cladding, curtain walls and window systems to resist water penetration, under simulated weather conditions. The testing can assist with identifying any construction or design issues at an early stage of the build. The testing can also assist when a live building is having water ingress issues.
BFRC engineers all have long standing knowledge of the testing standards, along with experience of testing fenestration products. BFRC know that this testing can be daunting, but we aim to make the process as easy as possible.
The testing standards that BFRC a UKAS accredited testing laboratory No. 20057 have accreditation to carry out:
- CWCT section 9 testing - 2005
- CWCT section 10 testing - 2005
- Technical note 41 - 2004
- BS EN 13051:2001
- NHBC (current version) Chapter 6.9 Section 17 and Section18
Hose Testing
The purpose of the Hose Test is to check the workmanship of the building envelope as constructed. The standard test is used to check the water penetration resistance of the permanently closed joints of the building envelope. Unmodified, this test is not suitable for use on opening joints, or joints that are between very porous components. The Hose Test is also suitable for use on sloped cladding systems.
The test involves water being applied from a single nozzle, held 300 mm from the joint that is under test, the nozzle is then traversed along the joint.
Spray (Sparge) Bar Test
The Spray Bar is a system incorporating a length of pipe with nozzles placed at specified intervals. This provides a continuous film of water that will run down the face of the test area. This test is suitable for open-jointed systems such as rain screen cladding, and unsealed patent glazing and opening joint systems.
The test involves setting up the bar system horizontally just above the top joint of the test area, at a distance of 250mm. This allows for the rain down affect on the test area.
What we require on site:
- Water supply – a standard stand tap will work
- Electric supply – 110v 32 amp
- Internal finishings to not be in place
- Access – if this is via MEWP a driver and harness will need to be supplied.
- For further information or to make a booking, please contact us by emailing ldearman@bfrc.org or calling 020 7403 9200.
- To speed up the process, please email marked-up elevation drawings.