E-Cousti Independent Wall Lining Solution

Description

E-Cousti Independent Wall Lining Solution can be used to meet the requirements of Approved Document E for new build, refurbishments and remedial solutions.  E-Coustiquilt consists of two layers of mineral wool laminated to the E-Cousti Membrane.

Perimeter Framing ‘U’ Channels should be used for the head and base of the partition and fixed a minimum of 20mm away from existing block work wall. C-Studs should be used to form any abutments to frame openings. Bed each section on two continuous beads of E-Cousti Fix and Seal and secure with nailable plugs at a maximum 600mm centres and 50mm from the ends of channels or studs. Separate studs and channels forming the perimeter need not be joined, but should be tightly butted together. Replace ‘U’ Channel with a Deep Flange ‘U’ Channel when forming a deflection head. Partitions should always run up to the structural soffit. Where an existing suspended ceiling cannot be cut back to allow for partitioning, bracing must be provided for lateral support at the partition head. At no time should the stud or E-Coustiquilt come into contact with block work the construction must remain de-coupled. Vertical Studs Studs should be positioned within the channels to coincide with the abutments of the boards, which will be fixed later. In general there is no requirement to secure the metal at this point as this will be achieved once the boards are screw-fixed. ‘C’ and ‘I’ Studs should be trimmed to within 5mm of the internal channel. For deflection heads only studs should be cut short to allow for required clearance within Deep Flange ‘U’ Channel, up to a maximum of 25mm. ‘C’ Studs can be extended by forming an overlap, boxing them at that point and securing them with Wafer Head Screws. The overlap must be at least 600mm.

E-Coustiquilt
E-Coustiquilt is supplied in 5m rolls, 400mm, 600mm or 1200mm wide at 52mm thick.
Once the frame is in position the E-Coustiquilt should be inserted between the studs vertically. Care should be taken to ensure that the insulation is fitted neatly without gaps at abutments or vertically between different rolls. The material can be secured in position using a metal or wooden batten screwed through the ‘U’ Channel at the soffit and floor.

Support for Horizontal Joints in Facings
To back horizontal joints in outer board layers, a fixing channel or flat fixing plate should be fitted across the face of all studs, secured with 2 Wafer Head jack point screws per stud to both faces. Repeat facing instructions to the front of the frame.

Doorways
The head is formed with a ‘U’ Channel, bent back and screw fixed with Wafer Head jack point screws to the studs. For a lightweight door weighing up to 25kg, ‘C’ Studs are used for the frame openings inserted with treated timber of 38mm thickness, cut to the size of the stud. For doors weighing up to 50kg, fully ‘boxed’ ‘C’ Studs are used for the frame openings inserted with treated timber of 38mm thickness, cut to the size of the stud.

Facings
A layer of 12.5mm Plasterboard is then offered up to the stud. The boards should be fully screwed with 25mm Drywall Screws at 200mm centres. After fixing ensure that any joints and gaps in the lining are filled with E-Cousti Fix and Seal prior to any surface finishing system.

Boarding
All boards should be offered up to the frame with the face of the board outwards and secured with Drywall Screws at 300mm centres. Fixing centres should be reduced to 200mm at corners. Boarding should commence at one end and work across the partition. At the head, foot and abutments, board edges should be bedded on to continuous beads of E-Cousti Fix and Seal. Board joints in multiple layers should be staggered both vertically and horizontally by at least 600mm.

Finishing

Taping and jointing
To achieve a seamless finish on tapered edge boards, use a range of jointing compounds and reinforcing tapes. As soon as the joints have dried, apply one coat of Wallboard Primer over the plasterboards and joints to equalise suction levels between the joints and the boards, or two coats for improved surface vapour resistance.

Skimming
A 2mm to 5mm veneer coat is applied to the face of the plasterboards. The board joints should be reinforced with either paper or fibre tape.

Decoration
For heavy type vinyl backed wall coverings reference should be made to the manufacturer for priming treatments.

Health & Safety
Both plasterboard and metal must be cut to the required length and this should be done in well ventilated areas paying attention to the cut edges of metal sections which may be sharp.