Sandwich-panel façades: coordinate appearance, joints and installation

Halls, workshops and pavilions can benefit from enclosure and insulation in one component, reducing some separate construction stages. Supports, correct joints and transitions to other building elements remain essential.

A dry warehouse, heated workshop and humid room impose different demands. Describe conditions on both panel faces, including chemical exposure. Facing selection should follow actual use rather than façade colour alone.

Through-facing and concealed-joint fixings differ in appearance and load transfer. Do not select a joint from a photograph alone. Check approved fasteners, loads and substructure requirements for the exact panel model.

The joint belongs to the product’s assessed system. Arbitrary cutting or bending of edges can change its behaviour. Plan installation sequence, fixing access and seals before closing the final bay.

Horizontal layouts emphasise width; vertical ones can emphasise height. The drawing must also account for supports, corners and openings. Use actual covering widths to avoid accidental narrow strips at elevation ends.

Dark surfaces heat more in sunlight, so check their length and span restrictions. Do not reuse light-colour tables without verification. Inspect smooth and microprofiled facing samples under oblique light too.

Thermal assessment needs the appropriate panel or assembly performance, not core conductivity alone. Joints and fixings matter. Two panels of equal thickness need not provide identical performance in use.

Do not equate PIR with non-combustible mineral wool. Reaction to fire is also distinct from assembly fire resistance. Verify the classified combination of thickness, facings, orientation, joints and installation against its documentation.

Water must drain past plinths, corners, roof junctions and windows without collecting in pockets. Heated buildings also need interior-side airtightness. Draw each junction together with the adjoining building layers.

Select fasteners for substrate material, thickness and loads. Timber fixings are not automatically substitutes for steel fixings. Do not pull panels hard against a distorted substructure; this can damage the facing and joint.

Inspect appearance under agreed acceptance conditions. Lighting angle can reveal distortions, but observation alone cannot establish structural significance. Separate appearance assessment from checks of supports, stresses and fastening quality.

Prepare every elevation with openings, laying direction and covering width. Agree delivery sequence and lifting access for long panels. Transport and storage must protect joint edges needed for correct assembly.

Include flashings, seals, fasteners and delivery in the order. During installation, observe film-removal deadlines, clear swarf and treat cut areas as instructed. Consistently executed details support a coherent façade appearance.