33mm thick ceiling soundproofing panel, composed of a 20mm-thick acoustic panel and a 12.5mm thick plasterboard slab. Simply fix to the ceiling followed by another layer of plasterboard. The panels have dimensions of 1.0m x 1.2m. Mustwall 33B ceiling panels are designed for use when space is at a premium – remember you only lose 50mm in total when the complete system is installed.

Key Features
Complete acoustic upgrade system at a minimum loss of space
Eco-friendly product – made from recycled rubber
Easily cut to size
Easy to install

Timber Joist Ceiling

Mustwall 33B on Timber Joist Ceiling

Using Mustwall 33B acoustic panels on the ceiling an airborne sound insulation (Rw) value of 64dB* can be achieved. Using it in conjunction with Syl 5 an impact sound insulation (Ln,w) value 56dB** is achievable.

* – Rw – The higher the value the better the performance
** – Ln,w – The lower the value the better the performance

How to fit

How to fit Mustwall 33B to your ceiling

• Fix a layer of Mustwall 33B to the plasterboard ceiling leaving a 3-5mm gap around the perimeter.
• Ensure that jonts are butted joints together tightly.
• Fill perimeter gap with acoustic sealant
• Fix another layer of 12.5mm plasterboard leaving a 3-5mm gap around the perimeter.
• Ensure that jonts are butted joints together tightly.
• Stagger the joints between the plasterboard and Mustwall 33B.
• Fill perimeter gap with acoustic sealant
• Apply a skim finish to your ceiling.