How do I select a cavity closer?

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13th May 2015 at 9:18 am #252

Tim
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There are three considerations:

– Has the building been built?

If it hasn’t you want to fit a 1st fit product, if the windows are just being replaced you want to select a 2nd fix cavity closer.

– How large is the cavity?

Simple, if the cavity width (the distance between the brick and block) is 70mm then you require a 70mm wide cavity closer.

– Do you want to comply with Building Regulations C, B and L?

If you do then select an insulated fire rated cavity closer with a minimum thermal resistance path of 0.45m2k/W, this value is also known as the R Value. All cavity closer manufacturers will be able to provide you with this information.

If you want to learn more about cavity closers, we have a RIBA approved video CPD, which can be watched at your leisure to explain how to pick the or make sure the correct cavity closer is being used.
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