Standards	Standard types
StandardsBS 2750-3,Measurement of sound insulation in buildings and of building elements. Laboratory measurements of airborne sound insulation of building elements.	Standard types
StandardsBS 5234-2,Specification for performance requirements for strength and robustness including methods of test.	Standard types
StandardsBS EN 1364-1,Fire resistance tests for non-loadbearing elements - Walls.	Standard types

Products

Fixing strap	Gypframe GFS1 Fixing Strap
Base channel	Gypframe 72 FEC 50 Folded Edge Standard Floor & Ceiling Channel
Head channel	Gypframe 72 FEC 50 Folded Edge Standard Floor & Ceiling Channel
Stud	Gypframe 70 S 50 'C' Stud
Screws side 1	Layer 1: British Gypsum Drywall Screws 25mm Layer 2: British Gypsum Drywall Screws 40mm Layer 3: British Gypsum Drywall Screws 55mm
Screws side 2	Layer 1: British Gypsum Drywall Screws 25mm Layer 2: British Gypsum Drywall Screws 40mm Layer 3: British Gypsum Drywall Screws 55mm
Sealant	Gyproc Sealant
Board side 1	Layer 1: Gyproc FireLine 15mm Layer 2: Gyproc FireLine 15mm Layer 3: Gyproc FireLine 15mm
Board side 2	Layer 1: Gyproc FireLine 15mm Layer 2: Gyproc FireLine 15mm Layer 3: Gyproc FireLine 15mm

Details

This section should be read in conjunction with the Products list.

Abutment Fixing: Gypframe 'C' stud suitably fixed to structure at 600mm centres.
Base Channel Fixing: Gypframe channel suitably fixed to floor at 600mm centres.
Deflection Allowance: Vertical deflection only. To be determined by a Structural Engineer.
Dropped Soffit: For principles of deflection head construction refer to detail ST-121-Z1L3-11
Finishing Requirements: To achieve the specified performances, the system should be finished using either one of our Thistle or ThistlePro plasters, or Gyproc jointing products. See the product range guides on the British Gypsum website for more information.
Fixing Strap: Used to support horizontal board joints in face layer of multiple layer board linings and enable board screw fixing at 300mm centres.
Loadbearing: No
Maximum Height: The maximum heights quoted are limited by the fire state field of application or by limiting deflection of L/240 at 200 Pa, whichever is the lower of the two.
Other Requirements: SpecSure^® system performance warranty confirms that British Gypsum proprietary systems will perform as specified for the lifetime of the building. The SpecSure^® warranty requires that all components are specified in full and constructed in accordance with British Gypsum’s installation guidance. For more details see the British Gypsum website. Always check with the design team before making any changes to the chosen specification, ensuring appropriate substantiation is sought to confirm that the solution still meets all required project performances.
Screw: Board layers 1 and 2 (inner), fix securely to Gypframe metal supports around the perimeter of the board at maximum 300mm centres; Board layer 3 (outer), fix securely to all Gypframe metal supports around the perimeter of the board and intermediate stud positions at maximum 300mm centres. External corners reduce fixings to 200mm. All joints staggered between layers. Fix working from the centre of each board. Position screws not less than 13mm from cut edges and 10mm from bound edges of boards. Set screw heads flush with plasterboard surface; do not break paper or gypsum core.
Sealant: Locate sealant at junctions with adjoining structure and other air paths. Apply as a continuous bead to clean, dry, dust-free surfaces, leaving no gaps. After application of sealant, bulk fill gaps between floor and underside of plasterboard using Gyproc joint compound.
Stud Centres (mm): 600 mm
Approx. Weight (kg/m2): 73 kg/m²
Head Channel Fixing: Gypframe channel suitably fixed to soffit at 600mm centres.

Test Reports

Please add this Specification to a project and go to that Project to access the related Test Reports.

Test report label	Test report name
Test report labelFire Resistance Test Report	Test report nameBTC 11310F
Test report labelSound Insulation Test Report	Test report nameBTC 2965A
Test report labelPartition Duty Test Report	Test report nameBTC 20341LC