The Ideal Solution for Soundproofing a Concrete Floor.

Floating Floor Solution with Decoupled Ceiling Below

Floating Floor Solution (15mm Above) with Decoupled Ceiling Below (28.5 - 46mm Below)

Application: Building Regulations New Build, Change of Use, Remedial and Refurbishment.
Simple slim solution offering ultimate performance and minimal loss of living space, with or without the existing plaster or ceiling lining in place.

Construction: (Solid / Concrete Floor):
- sacrificial layer or FINISHED surface
- 15mm Phonewell® Sound Insulation
- solid concrete floor
- optional 2" x 2" timber battens
- 16mm standard Resilient Bars
- 12.5 or 15mm Sound Resistant Plasterboard
- optional second layer of plasterboard

Materials List (available from our stockists)
- Phonewell® Acoustic Insulation on Floor (1200mm x 800mm x 15mm)
- Phonewell® Eco-Tape
- Optional 48mm x 48mm timber battens
- Solid substrate hammer fixings to secure optional battens to ceiling substrate
- Optional 50mm x 45kg/m³ density mineral wool between battens
- Resilient bars (3m x 75mm x 16mm)
- Solid substrate hammer fixings to secure resilient bars to ceiling, or drywall screws to secure resilient bars to battens
- Sound resistant plasterboard (2400mm x 1200mm x 12.5 or 15mm)
- Drywall screws (25mm length) to secure plasterboard through to resilient bars
- Drywall screws (42mm length) to secure optional second plasterboard through to resilient bars
- Flexible mastic or Acoustic sealant

Instructions: (have you considered Flanking Noise?)
Floor
1. Treat new concrete floors with a damp proof membrane.
2. Ensure the floor is clean, dry and sufficiently level. If required any unevenness can be levelled out with sand, but Phonewell® does have minor correction capabilities.
3. Begin in one corner and lay the Phonewell® boards on the concrete floor, butted tightly up to the perimeter walls.  Do not screw or nail the boards down.
4. Butt each Phonewell® board up tightly to each other, leaving no gaps.  Lay the boards in a brickwork formation.  See Cutting Phonewell®.
5. Install the finished floor surface as per Fitting Floor Finishes over Phonewell®.
6. Fit skirting boards ensuring no contact with the floor – leave a 2mm gap.

Ceiling
7. Make ceiling below sound by removing any loose material.
8. Secure optional 48mm battens at 400mm centres with suitable hammer fixings. (Optionally fill the void between the battens with 50mm x 45kg/m³ density mineral wool).
9. Secure the resilient bars at 400mm centres and perpendicular to the battens, if using, with drywall screws.  Use hammer fixings to secure resilient bars to ceiling, if not using battens.  Ensure bar ends do not touch the perimeter walls - leave a 5mm gap.  Note: the first and last bars should be approximately 50mm clear of the nearest walls. These bars can be reversed to ease installation.
10. Screw plasterboard into the resilient bars with 25mm drywall screws which must not make contact with the timber battens or concrete ceiling, being careful to leave screwheads just below the surface.
11. Optionally add second layer of plasterboard with staggered joints.
12. Seal 5mm perimeter gaps with flexible mastic or acoustic sealant.
13. Finish the plasterboard as required.
14. Consider treating any identified flanking walls with Phonewell®.