Sherborne House Project

Sherborne House, 119-121 Cannon Street, EC4 is a multi-let property situated in the heart of London’s financial district. Clad in Portland stone, this historic office building has recently received a transformation including external and internal refurbishments/upgrades.

The design for the office space on the second floor was entirely open plan, so the ingress of the outside noise emanating from one of London’s busiest roads, posed a major issue. For a conducive working environment, it is recommended ambient noise level in a meeting room is 35-40dB and a cell office 40-50dB, whereas outside street noise levels can be 70-80dB.

When there is a cavity of at least 100mm between the primary and secondary glazing a reduction of 45dB is achievable. An additional benefit of secondary glazing is thermal retention; with the use of high performance twin seals, it virtually eradicates unwanted drafts and a U-value of 1.8 is possible.

Twenty1 Construction approached Selectaglaze, to provide them with a solution to improve the acoustic insulation of the existing primary windows, which could not be replaced. On completion of the building works a survey was undertaken for 17 new secondary glazing units from the slimline range. Both series 10 horizontal sliding and series 20 vertical sliding units were used.

Overall the results look fantastic, in particular the featured sub-lights on the front elevation and the four full radius headed vertical sliders on the rear - the space now looks modern and fresh.

The newly refurbished second floor offices are now an ideal environment to house a new occupier, thanks to Selectaglaze soundproofing the space against the road traffic noise.

Established in 1966 and Royal Warrant Holder since 2004, Selectaglaze is the leading specialist in secondary glazing. It boasts a wealth of knowledge and a range of extensive products to suit all projects.

For further information visit www.selectaglaze.co.uk, E: enquiries@selectaglaze.co.uk or T: 01727 837271