R Lewis and Co are the only quality, approved installers for Injectaclad.
Injectaclad is an acrylic based graphite sealant developed by leading fire protection experts. It is used to reinstate the fire resistance performance of wall and floor construction cavity details, where linear gaps are present within hidden voids that can allow fire and smoke to pass through from one compartment to another.
Injectaclad expands upon contact with heat and is considered as an intumescent or reactive material.
The product is pumped into the desired depth and width void using a patented method to form a linear cavity fire barrier utilising the systems reinforcing mesh and holding pin supports.
Cladding Fire Break Design
Background to Injectaclad
Injectaclad has been developed in response to a request for a fire protection solution to upgrade each floor level ‘break’ behind the existing external cladding. With many difficult site considerations to overcome including the possible removal of existing high rise cladding and the significant cost implications of doing so, we set about reviewing the alternatives. After several weeks of on site testing and ad hoc tests carried out at our in house facility on the proposed solutions, the final proposal was approved by the client and independently fire tested. The system achieved the 30 minute protection level required for this detail.
Below are a selection of images and videos from the testing process carried out at the BRE test centre on 18th January 2018.
What you see is an ‘external’ vertical cladding façade built on two sides to represent three floors of a corner building detail constructed in front of and against an access stairwell.
Not visible but installed within the construction at each floor level (marked by the dark horizontal dotted lines (to identify each floor level)) is the proposed new cavity fire break system.
Cladding Wall Fire Break Test Construction
It ran for a total of 60 minutes (30 minute fire test requirement, test was continued for a further 30 mins before cold water hose stream applied (to put the fire out)!
The test was carried out to establish if the ‘new’ fire break detail installed at each floor level maintained its integrity for the required period or not; assessing heat rise and flame spread / smoke emissions during the test.
We hope to use test result data (pending issue of certified test data) to allow our client’s cladding to be reinstated with this our newly tested cavity fire break detail installed behind the cladding walls at each floor level (as shown in this test rig construction and briefly described here).
Cladding detail for test construction
Cladding Wall Fire Break Test Rig
If you are looking for a certified and cost effective site specific solution and need assistance,
please contact our technical department at any time by emailing technical@rlewisfire.com
Or visit www.injectaclad.com