v2 Nov 22
Skyline Soffit Installation Guide
ARCHITECTURAL ALUMINIUM
General
Fixings
Skyline Soffit is often used in combination with the Skyline Fascia System in applications where there are overhanging eaves. For full details see the Skyline Fascia Installation Guide. Ensure that the substrate is sound and secure, and check substrate for level and alignment. Any irregularities in the background material should be corrected prior to installation of Skyline Soffit System. This will help components align and fit properly during installation.
Screw fixings are not supplied. Only use high quality fixings and ensure fixings are suitable for the substrate. General advice on fixings: Use good quality sherardised / cadmium plated screws, typically No12 x 38mm roundhead woodscrews or 4.9 to 5.5 x 35mm stainless-steel fixings with washer through oversized (8mm) or slotted holes (11x7mm) to allow for thermal movement and expansion. Generally, fix at maximum 600mm centres to substrate. For further advice, contact our Technical Service Team on 01536 383810
Components
3
2
1
4
1
SOF0 – flat aluminium soffit
2
SOF4 – 4x bent aluminium soffit
3
SOF7 – 7x bent aluminium soffit
4
Corner
5
Loose union
6
Profile trims
5
6
6
Note: bespoke components can be made to customer specification. These include special angles, radiuses and vented soffits.
6
Soffit
Fascia
Fascia
Fascia Box end cut to profile
Soffit
Technical Support: +44 (0)1536 383 810
Stop end
www.alumascwms.co.uk
technical@alumascwms.co.uk
Skyline Soffit Installation Guide
ARCHITECTURAL ALUMINIUM
Soffit support trim Soffit Loose union
Loose union Fascia
1.
The installation of the soffit will vary based on the application and soffit type. Typically on a domestic application, the soffit panel consists of a flat aluminium profile (SOF0) and is installed prior to fascia installation. Please refer to Skyline Fascia Installation Guide.
Soffit vent options also available to customer specification.
Soffit
larger schemes, where the soffit 2. On has a greater overhang, this typically requires a soffit plank that has secret fixings (SOF7) to give a clean unobtrusive design. For further advice on this type of application, contact our Technical Service Team on 01536 383810.
Technical Support: +44 (0)1536 383 810
www.alumascwms.co.uk
technical@alumascwms.co.uk
Skyline Soffit Installation Guide SCH2 – folded welt profile
ARCHITECTURAL ALUMINIUM
SCA1 - 1x bent profile trim
SCA2 – 2x bent profile trim
Corner and jointer trim
trims may be required at the interface between the wall and 3. Closer soffit in applications where there is no plywood soffit board to which the Skyline soffit can be fixed. A selection of closer trims is available for such applications. For complex soffit detailing, closer trims can be purpose made to suit.
Closer trim
Closer trim
4.
In applications where a closer trim is necessary, fix the trim securely to the wall at the point corresponding to the finished soffit level. Take care to use fixings appropriate to the wall substrate.
Technical Support: +44 (0)1536 383 810
fixing soffit to a closer trim, use 5. When high quality low profile 4.9 to 5.5 x 35mm stainless-steel fixings with washer through oversized (8mm) or slotted holes (11x7mm) to allow for thermal movement and expansion. Generally, fix soffit to trims at maximum 600mm centres. www.alumascwms.co.uk
technical@alumascwms.co.uk
Skyline Soffit Installation Guide
ARCHITECTURAL ALUMINIUM onto solid boxed substrate, 6. Ifusefixing good quality sherardised / cadmium plated screws, typically No12 x 38mm roundhead woodscrews or 4.9 to 5.5 x 35mm stainless-steel fixings with washer through oversized (8mm) or slotted holes (11x7mm) to allow for thermal movement and expansion. Generally, fix at maximum 600mm centres to substrate.
with overlaying the soffit 7. Proceed lengths in sequence, taking care at each joint to leave an expansion gap. Use the loose union provided at each joint, applying a bead of silicone sealant before fixing.
Soffit
Loose union
Low profile fixing Silicone sealant
Silicone
Boxed substrate ready for installation of aluminium fascia
8. Once soffit is installed, proceed with installation of fascia. Please refer to Skyline Fascia Installation Guide. Technical Support: +44 (0)1536 383 810
www.alumascwms.co.uk
technical@alumascwms.co.uk