Detail for external wall insulation to new/existing meter box. This detail presumes the application of internal wall insulation, on the interior side of the wall opposite the meter box at a future date to prevent cold bridging, but does not require the installation of both external and internal insulation at the same time.
Because of the the need to keep a required distance around gas meters and pipes as part of EWI works, it is recommended that Internal wall insulation be installed at a future date to the internal wall behind the existing meter. A 300mm overlap to the EWI on the external wall combined with insulation works to the existing ground floor is expected to mitigate cold bridging caused by carrying the EWI around the meter box.
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