MC - Mullion Cover | Interiors | Products | Siderise

Siderise MC - Mullion Cover

Siderise MC Mullion Over-clad System is a decorative and robust mullion liner for acoustic or acoustic and fire enhancement of curtain walling mullions.

Siderise MC System provides a practical means of improving the sound insulation performance of curtain walling mullions where partitions abut, a very common issue where noise levels readily travel between adjoining offices on the same floor via the Hollow Mullion.

Their application to the mullions substantially improves the acoustic performance of a lightweight aluminium mullions, Acoustic only and Acoustic + 2 Hour Fire rated versions are available.


  • Tested to BS EN ISO 140-3:1995 and assessed to BS EN ISO 717-1:1997
  • Suitable for use on both ‘Stick’ and ‘Unitised’ curtain wall systems
  • Can be applied to any mullion size from 80mm – 250mm
  • Supplied in a set of key parts per mullion

The Siderise MC System is an external treatment to the mullions and therefore is suitable for use in ‘New Build’ projects where the layout is not known at design stage, so internal acoustic upgrades to the mullion
are not practical, ‘Fit-Out’ projects where internal lining to the mullion is not possible as the façade is already in place, and in addition, due to the clean simplicity of installation, it can also be fitted to singular offices where there are acoustic issues whilst fully fitted out without the need to empty the office of furniture etc, fitted very quickly during ‘Out of Hours’ without disruption to the occupants.


You can view the full brochure here

For Technical Support with this Siderise Special Products solution please contact:

T:+44 (0) 1473 921551