Would you isolate THIS ceiling or just add mass?
Posted: Tue Jun 16, 2020 7:32 am
Hi. Welcome your thoughts on this. New single storey extension to be started along the back of our house. It will house a home cinema/theatre and additional kitchen space.
Three of the theatre walls will be exterior walls (Brick/concrete - two new walls and the existing back wall of the house.) The 4th wall is an interior concrete block wall - separating the theatre from the open plan kitchen/living space.
All theatre walls will be framed with decoupled 2x4 stud work, insulation. Stud top plates will be fixed to the new roof joists with isolating bracket so stud work will be decoupled completely.
There is nothing above the theatre. The main concern for soundproofing is flanking and noise for neighbours who are really close.
There will be a pitched roof above the flat ceiling of the theatre. The ceiling joists (horizontal) only touch on the pitched roof when they meet at the exterior wall, the rest is decoupled. The horizontal ceiling joists do also touch the wall plate where they are fixed on to the brick wall (left)
The ceiling space will be filled with 1ft of loose insulation as well. Ceiling joists covered in double drywall.
Just weighing up whether the extra cost and complexity of clips/channel is really worthwhile doing, given the roof joists don't meet for most of roof. It's really hard to judge how much or little difference those two points of contact will make.
Three of the theatre walls will be exterior walls (Brick/concrete - two new walls and the existing back wall of the house.) The 4th wall is an interior concrete block wall - separating the theatre from the open plan kitchen/living space.
All theatre walls will be framed with decoupled 2x4 stud work, insulation. Stud top plates will be fixed to the new roof joists with isolating bracket so stud work will be decoupled completely.
There is nothing above the theatre. The main concern for soundproofing is flanking and noise for neighbours who are really close.
There will be a pitched roof above the flat ceiling of the theatre. The ceiling joists (horizontal) only touch on the pitched roof when they meet at the exterior wall, the rest is decoupled. The horizontal ceiling joists do also touch the wall plate where they are fixed on to the brick wall (left)
The ceiling space will be filled with 1ft of loose insulation as well. Ceiling joists covered in double drywall.
Just weighing up whether the extra cost and complexity of clips/channel is really worthwhile doing, given the roof joists don't meet for most of roof. It's really hard to judge how much or little difference those two points of contact will make.