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	65mm Reinforced Sand:Cement Screed
	Polyfoam Floorboard 5 Laid Over Rocksilk Acoustic Floor Slab Plus
	Precast Concrete Planks
	Knauf C Form II Ceiling with 15mm Knauf Wallboard

A precast concrete floor slab with a 65mm sand/cement screed on 5mm Polyfoam Floorfoam 5 and 25mm Rocksilk Acoustic Floor Slab Plus. A ceiling of 15mm Knauf Standard Wallboard supported on the Knauf C Form II ceiling system.

This Construction requires Pre Completion Testing to prove compliance with Building Regulations Part E1

All the joints between the precast planks should be grouted and sealed.

Lay the Rocksilk Acoustic Floor Slab Plus over the entire floor area. The joints between boards should be tightly butted. Cut strips the depth of the screed and place against the perimeter wall. Overlay the slabs with the Polyfoam Floorfoam 5, with joints overlapped a minimum of 150mm and ensuring they do not coincide with the joints of the rigid insulation slabs. Turn the Floorfoam 5 up at the perimeter to isolate the screed from the wall.

The floor is then screeded to finish, taking care to ensure that the screed remains totally isolated from the main structure to prevent any acoustic transfer.

Rocksilk Acoustic Floor Slab Plus has excellent sound absorption characteristics. For optimum performance, the insulation must be tightly butted, with no gaps.

Polyfoam Floorfoam is excellent at cushioning vibrations. Its closed cell construction makes it excellent at absorbing impact sound.

Rocksilk Acoustic Floor Slab Plus is classified as non-combustible to BS 476: Part 4: 1970.

When Polyfoam Floorfoam is installed in a concrete floor construction it will not contribute to the development stages of a fire.

 

Rocksilk Acoustic Floor Slab Plus is manufactured to provide a very high level of compression resistance.

The closed cell nature of Polyfoam Floorfoam makes it resistant to compression.