What is the recommended preparation when applying two layers of Soundshield plasterboard (or equivalent) to a ceiling with Resilient bar in place?
I've screwed up the 1st layer of 15mm to the resilient bar & 2nd layer of 12.5mm is ready to go. I've read that staggering the joints is recommended but should the taper edges be scrimmed & filled first before 2nd layer?
I've got some AC50 to fill the gaps on the non tapered edges but not sure what to do on taper edges to maximise soundproofing.
I tried contacting Knauf as my boards are Soundshield, but still no reply yet!
I've screwed up the 1st layer of 15mm to the resilient bar & 2nd layer of 12.5mm is ready to go. I've read that staggering the joints is recommended but should the taper edges be scrimmed & filled first before 2nd layer?
I've got some AC50 to fill the gaps on the non tapered edges but not sure what to do on taper edges to maximise soundproofing.
I tried contacting Knauf as my boards are Soundshield, but still no reply yet!