ENERGY CONSERVERSSTC Wall & Floor Configurations
Cellulose Insulation is an excellent sound proofing insulation product for homes and all types of buildings
Below are a few of the many different possible wall, floor and ceiling construction options. Each wall, floor or ceiling assembly has a different performance for Thermal (R value), Sound (STC) and Fire Resistance. You will find following a few sample construction assemblies, many other options are also possible. Please contact our technical desk for additional information on the thermal, sound or fire performance possibilities that can be designed using our products.
- Exterior Walls
- Floors
- Interior Walls
Exterior Wall
EW1a – Exterior Wall Wood Stud
- 2×4 wood studs spaced 16 or 24 o.c.
- 3.5 thick Weathershield/Weathershield / ProCell TM cellulose insulation (wet-spray or dense pack)
- 1 layer 5/8 Type X drywall
- Exterior sheathing and siding
- FRR 1 hour
- STC n/a
Floors
F3b – Wood Floor Joists
- Subfloor of 5/8 plywood, OSB or waferboard
- Wood Joists or Wood I-Joists spaced no more than 24 o.c.
- With cellulose insulation in cavity
- 150 mm thick loose fill Weathershield / Weathershield / ProCell TM cellulose insulation
- 90 mm thick wet-spray Weathershield / Weathershield / ProCell TM cellulose
- Add 1 STC per 50 mm thickness increase in insulation depth up to max of joist depth
- 1 layer 5/8 Type X drywall in cavity
- FRR n/a
- STC 31
F20f – Wood Floor Joists with concrete topping
- 1.5 concrete topping
- Subfloor of 5/8 plywood, OSB, or waferboard
- Wood Joists or Wood I-Joists spaced 16 o.c.
- With Weathershield / Weathershield / ProCell TM cellulose insulation filling the cavity with a density of 2.5 lb/ft3 that is supported by zinc-coated galvanized poultry fence fabric having 1 hexagonal openings and made using 20 gauge wire
- Resilient Channel spaced 300mm o.c.
- 1 layer 5/8 Type X drywall
- FRR 1 hour
- STC 65
Interior Walls
S6a – Steel wall studs
- 1.5 x 3.5 steel studs spaced 24 o.c.
- With 3.5 thick Weathershield / Weathershield / ProCell TM cellulose insulation
- 2 layers 5/8 Type X drywall both sides
- FRR (non-loadbearing) 2hours
- STC 56
S11a – Steel Wall Studs
- 1.5 x 5.5 loadbearing steel studs spaced 16 or 24 o.c.
- With 3.5 thick Weathershield / Weathershield / ProCell TM cellulose insulation
- Resilent channel spaced at 24 o.c.
- 1 layer 5/8 Type X drywall on each side
- FRR n/a
- STC 50
S15c – Staggered Steel Stud Wall
- 2 rows of 2×4 steel studs spaced 16 or 24 o.c. on 2×6 base plate
- With 3.5 Weathershield / Weathershield / ProCell TM cellulose insulation
- With 2 layers 5/8 Type X drywall on each side
- FRR (Loadbearing) 1 hour
- STC 68
W15a (Sample 1) – Double Wood Stud Wall
- 2 rows 2×4 spaced 16 or 24 o.c. on separate 2×4 base plates that are spaced 1 apart.
- With 3.5 Weathershield / Weathershield / ProCell TM insulation in each cavity
- 2 layers 5/8 Type X drywall on each side
- FRR (loadbearing) 1.5 hours
- FRR (non-loadbearing) 2 hours
- STC 66
W3b – Wood Wall Studs
- 2×4 wood studs spaced 24 o.c.
- 3.5 Weathershield / Weathershield / ProCell TM cellulose insulation
- Resilient channel spaced 16 or 24 o.c.
- 1 layer 5/8 Type X drywall each side
- FRR (loadbearing) 45 min
- FRR (non-loadbearing) 1 hour
- STC 48
W7a – 2 row staggered wood stud wall
- 2 row of 2×4 spaced `16 or 24 o.c. on 2×6 base plate
- Fill cavity with Weathershield / Weathershield / ProCell TM cellulose insulation
- 1 layer 5/8 Type X drywall each side
- FRR (loadbearing) 1 hour
- FRR (non-loadbearing) 1 hour
- STC 47
