Crown Acoustic Party Wall Slab

For the acoustic insulation of party walls.

Description

Crown Acoustic Party Wall Slab is a foil-faced semi-rigid non-combustible, glass mineral wool slab with a water repellent additive. They are 455mm wide to suit standard vertical wall tie spacings, ensuring a closed joint with adjacent slabs.

Application

Crown Acoustic Party Wall Slab has been developed as an acoustic insulant in masonry party walls aimed at removing the need for a wet-applied parge coat. The normal internal lining of plasterboard on dabs, applied directly to the bare block face is then the internal finish.

Crown Acoustic Party Wall Slabs are installed partially filling the cavity in the separating wall. The slabs are held in place with retaining discs in the same manner as a partially filled external cavity wall.

They must be installed with the foil facing the minimum residual 40mm cavity with the slabs tightly butted together. The junction of the party wall cavity and external wall cavity must be closed to prevent flanking sound transmission. This is usually achieved by installing Crown DriTherm Cavity Slab or Crown Cavity Barriers.

Normal practice is to continue the installation of the Crown Acoustic Party Wall Slab to the full height of the separating wall up to the underside of the roof.

Standards

Crown Acoustic Party Wall Slabs are noncombustible inorganic glass wool, defined as mineral wool in BS 3533: 1981 and are manufactured in accordance with BSI Quality Assurance Standard BS EN ISO 9001. 2000.

Durability

Crown Acoustic Party Wall Slab is odourless, rot proof, non-hygroscopic, does not sustain vermin and will not encourage the growth of fungi, mould or bacteria.

Performance

Fire

Crown Acoustic Party Wall Slab is classified as Euroclass A1 to BS EN ISO 13501-1.

Acoustics

Crown Acoustic Party Wall Slab has exceptional acoustic absorption characteristics.

Benefits

Removes the requirement for parge coat on masonry separating walls
Water repellent
Slabs "knit" together, thus eliminating air gaps between adjacent slabs
Non-combustible
High content of recycled glass used in the manufacturing process

Downloads

Vapour resistance and condensation

Crown Acoustic Party Wall Slab offers virtually no vapour resistance, allowing water vapour to pass freely through the slab.

Environmental

Crown Acoustic Party Wall Slab is free from CFCs, HCFCs and any other material with ozone depletion potential in its manufacture and content and represents no known threat to the environment.

Crown Acoustic Party Wall Slab’s manufacture has a low impact on the environment and is classified as Zero ODP and Zero GWP.

Handling and Storage

Crown Acoustic Party Wall Slab is easy to handle and install, being lightweight and easily cut to size.

It is supplied in polythene packs which are designed for short term protection only. For longer term protection on site, the product should either be stored indoors, or under cover and off the ground.

Crown Acoustic Party Wall Slab should not be left permanently exposed to the elements.

Product Data

Thickness (mm)	Length (mm)	Width (mm)	Slabs per Pack	Area per Pack (m²)
35	1200	455	10	5.46