Below you will find answers to the most frequently asked questions about PhoneStar sound insulation boards. Detailed descriptions can be found in the Installation Instructions.
Tip: First read the answer below and if you need more information, you can click on the hyperlink
Cut the board with a jig oder circular hand saw with ceramic "Widia" blade.
PhoneStar is cut horizontal and lying, the raw edge is shut with the Wolf Tape.
No, it is recommended to use plasterboard or timber panels as cladding.
No, the screw compresses the sand but must not be overtightened
Normally, the boards get dry in the air. The capillary action of the inside waves removes the
humidity outwards. A fitted PhoneStar is similar to the most other building materials related to the invasion of humidity.
In individual cases, please speak to our application department.
The floor must be sound, flat and dry.
According to the Installation Instructions - almost everyone.
Floating covering means a float mounting. Bonded covering means that PhoneStar
is glued on the floor or 2 layers of PhoneStar are glued with each other.
A 15 mm thick PhoneStar board reaches an airborne sound insulation of up to Rw=36dB.
On a concrete ceiling with laminate as final covering PhoneStar, 15mm thick, reaches
an impact sound insulation of up to 22dB. More improvements are reachable through
You can find more information and about 100 examples of constructions
on the sound insulation planning guide.
Four variants are possible:
1. Direct mounting with the acoustically decoupled Wolf System Dowels.
2. Installing wooden battens as a substructure at a distance of 62,5 cm.
3. Metal plume strip as a substructure for decoupling.
4. Furring as a stud wall with PhoneStar.
In general, mass-spring-mass systems provide better results.
In all cases plasterboard is recommended for cladding. This should be
screwed with gypsum in gypsum screws directly into the PhoneStar board
to avoid sound bridges.
You have to mill out the PhoneStar board and to achieve the best solution
you should use sound insulation boxes. The cutout is done at a lying PhoneStarboard and in the end you mask the cut surface with the Wolf Tape.