Project (planning stage): Piano practice and Hi-Fi listening room “man cave” to be built attached to back of townhouse.
Goals: A) Sound insulation for neighbors and interior of house (lesser importance)
B) Acoustic quality for Piano #1 & #2 Hi-FI. (I will address this on the correct forum thread if necessary)
Sound level: General 60-70db, peak 80db. Classical music practice and listening.
Magnepan speakers/with sub & 7’ Grand Piano.
Construction dimensions (ID): 11’.6”x17’ x 12’-11’ graded ceiling lengthwise.
Constructions Materials Available: Similar to what can be found in California.
Proposed Construction:
Floor: 4” concrete slab, PE sheeting/ Cork Flooring (hardness rating 830)
Walls: 2x4” 20GA steel, 16” spaced; RS1 Channel 24”; 2 x5/8” type X DW with Green glue (1 tube x 4x8 sheet) ; R11 Pink Fiberglass. Perimeter sealed with Henkel.
Exterior: 5/8” Densglass sheathing, stucco, sealed, paint.
Ceiling: 2x6” 20GA/ 2x 5/8” DW; Hat Channel; R19 Pink Fiberglass; EPS Crown molding Perimeter sealed with Henkel.
Roof: 3/4” plywood, Roof sealant layer, concrete shingle. Perimeter sealed with Silka Sealant.
Windows: 48”x48” (need suggestions on materials)
HVAC: Mini-Split
After a lot of research I think I’ve come up with a descent build but would like some feedback from the experienced. My main concerns are the windows but I need some natural light so I would appreciate some suggestions. I am not that concerned with sound entering the house through an exterior insulated build French slider. Moving the piano into room will be a huge difference for and give me the privacy to practice in peace.
Questions:
1. Recommended window materials
2. When hanging the 2nd sheet of DW is it important to have the bottom ¼” off the floor then sealed with a slab floor?
3. R11 or R13? Acoustical difference or just thermal?
4. How to maximize acoustics for the Piano from the players perspective and the Hi-Fi system.
Piano Positioning, Bass traps , acoustic panels ( currently have 4 each 24”x48” and 2 24”x24” panels)
5. Any special considerations for installing the minisplit? I will need to punch a about a 2” hole through the exterior wall.
Thanks in advanced