Fermacell

INDEPENDENT WALL LINING

Fermacell boards can be installed on to an independent wall linings for optimum acoustic performance or where the background is unable to recieve a direct fixing. Independent wall linings can be constructed by using DIN standard C Stud sections

• Allow a minimum cavity of 10 mm; a vapour control barrier should be installed as required
• Fix the bottom track allowing for the desired cavity at 600 mm centres using proprietary fixings. Plumb the ceiling line track in to position and fix
• Cut the DIN standard studs 5 mm shorter than the floor – ceiling height and position at the recommended centres for the board width
• Insulation can be inserted either between the studs or in the cavity providing there is adequate clearance to the existing substrate
• Install the board as per fixing instructions in the Fixing and Finishing section

* For double layer systems the second layer can be screw fixed or stapled in to place – please contact our technical department for staple fixing details.

ADJUSTABLE CAVITY STEEL LINING SYSTEMS

Variable wall linings are used to either "plumb" a background or provide a solution for the provision of a services cavity, allowing greater cavity width flexibility. Variable cavity width from 30 – 125 m can be achieved by using DIN standard Lining systems.

• Mark horizontal lines at 800 mm centres and 600 mm vertical centres on the existing wall
• Fix the bottom track allowing for the desired cavity at 600 mm centres using proprietary fixings. Plumb the ceiling line track and fix
• Install the adjustable brackets fixing directly to the wall using proprietary fixings at the intersections of the setting out lines
• Cut the adjustable channels 5 mm shorter than the floor – ceiling height and position inline with the brackets. Fix the brackets to the channels, bend back excess
• Install the board as per fixing instructions in the Fixing and Finishing section

TIMBER LINING SYSTEMS

As with traditional dry lining methods Fermacell can be fixed to timber battens that are secured back to the substrate.

• Allow a minimum cavity of 50 mm and a breather membrane to BS 4016 should be installed for timber frame constructions
• Construct the timber lining as required
• Insulation can be inserted either between the studs or in the cavity allowing adequate clearance to the existing substrate
• Install the board as per fixing instructions in the Fixing and Finishing section. Fermacell Boards can be screw fixed or stapled in to place – please contact our technical department for staple fixing details

DOT AND DAB (DIRECT BOND)

Fermacell boards can be directly bonded to a masonry background using Fermacell Bonding compound and Tapered Edge boards. Tapered edge boards are recommended as the profile of the board edge will help reduce any undulations that may occur.

• Ensure the masonry background is dry and dust free
• Direct bonding is not recommended for solid exterior walls prone to moisture ingress, an adjustable or independent lining system should be used instead
• The minimum finished dab thickness should be no less than 10mm and not greater than 25 mm
• Apply Fermacell Bonding Compound dabs at 400 mm or 600 mm centres vertically to suit the board width
• Each dab should be 50-75 mm wide x 250 mm long and 25 mm in from the board edge at 30 mm vertical centres
• A continuous ribbon of Fermacell Bonding Compound should be applied around the perimeter of the external walls and around door/window frames and sockets
• The contact area of the dabs should be at least 20% of the board surface