1. Begin by installing a wood stud frame with a minimum gap of 5mm from the existing brick wall. Adhere Resilient Sealing tape to the frame perimeter. Fix the timber to the floor, ceiling and adjoining walls with the resilient tape sandwiched between the timber and the adjoining surface. This will help to reduce flanking sound transmission.
2. The timber frame studs should be fitted at a maximum of 600mm centres with noggins.
3. Insert Rockwool between the stud frame, held in snugly between the studs. The cavity should be filled approximately 80% of the depth to avoid the Rockwool from being compressed.
4. The bottom row of Resilient bar should be no further than 100mm off the floor. The top row should be no further than 100mm below the ceiling. The Resilient Bar must not touch any adjoining surfaces.
5. The remaining Resilient Bar should be spaced at no more than 600mm centres vertically. There should be fixings a maximum of 600mm centres.
6. Where necessary ensure that the Resilient Bars overlap by 200mm.
7. Fix your first layer of acoustic plasterboard to the Resilient Bar. Leave a 5mm gap around the perimeter of the wall. The acoustic plasterboard should not be in contact with any adjoining surfaces. Ensure that the length of screws fixing the plasterboard to the Resilient Bar don’t contact the studwork.
8. Seal the gap around the perimeter of the wall with AC95 Acoustic Sealant.
9. Next adhere M20 Soundproofing Mat to the plasterboard in a brick bond fashion using Advanced Acoustics Contact Adhesive.
10. Fix the final layer of acoustic plasterboard, staggering the joints from the previous layer of acoustic plasterboard. Ensure you use screws that are long enough to fix to the Resilient Bar but are not so long that they touch the timber stud. Leave a 5mm gap around the perimeter of the wall.
11. Seal the perimeter and any other gaps with AC95 Acoustic Sealant.
12. The wall is now ready to be dry lined or plaster skimmed.
For a ceiling installation begin by installing Rockwool between the joists, this should be fitted snugly so that friction holds it in place. If required you can use thin wire to keep it suspended. The cavity should be filled approximately 80%.
When fixing the Resilient Bar it should be installed no further than 100mm from the adjacent walls. The bars should be spaced at a maximum of 600mm centres vertically and horizontally. You can now proceed from step 6 in the instructions above. The bar should run perpendicular to the joists. Instead of using M20 soundproofing mat use 10kg Soundproofing Mat.