Frameless soundproofing of walls

stena SoundPro

Frameless soundproofing of walls takes 2-3 cm.


Step 1

Examine the walls for cracks thoroughly and tap them to find any possible internal voids. Cracks should be pointed and filled up with gypsum plaster or cement and sand grout (CSG). In locations where there are voids, break the wall through to access the void and fill it up with CSG.

Examine joints between the wall plate and adjoining surfaces. They must not have any gaps as well.

Step 2

Apply MaxForte-SoundPRO rolls to the wall to be soundproofed and fix them at the top with plastic umbrella dowels 70 mm in length (3 dowels for each sheet: two on the sides and one in the center). Rolls should be laid with a 4-5 cm overlap. Joints between MaxForte-SoundPRO rolls should be sealed up with reinforced mounting tape. Edges of rolls should extend to adjacent surfaces: the floor, the ceiling and side walls by 5 cm.

Step 3

Mount sheathing materials in the following sequence:

а. Gypsum fiberboard (GF) 10 mm in thickness. Press the sheet against MaxForte-SoundPRO and attach it to the wall through MaxForte-Sound PRO. Use plastic umbrella dowels (~5 pieces per m2)for fastening.

stena soundPRO 1

b. Treat the seams between the GF sheets with MaxForte silicone sealant.

stena soundPRO 2

c. Then, a gypsum plasterboard (GP) sheet 12.5 mm in thickness should be attached. Gypsum plasterboard is attached to the GF sheets with ordinary self-tapping screws for gypsum plasterboard.

Seam spacing should be ensured: joints between GF sheets and joints between GP sheets should be placed apart at a distance equal to half of the sheet width!

stena soundPRO 3

d. Joints between GP sheets must be puttied.

The sheathing sheets must not touch the adjoining walls, the floor and the ceiling directly. The adjoining should takes place through curved edges of MaxForte-SoundPRO.

After the sheathing has been mounted, treat the seams along the perimeter seams with MaxForte silicone sealant.