BS 5427:2016+A1:2017
$215.11
Code of practice for the use of profiled sheet for roof and wall cladding on buildings
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 108 |
This British Standard gives recommendations for the design and construction of external cladding assemblies for roofs and walls of buildings in the UK, using longitudinally profiled sheeting as the external surface, including standing seam. It is not applicable to profiled sheeting used as a supporting substrate, decking, structural liner trays, fully supported profiled sheets, structural composite formations of profiled metal sheeting and concrete, small element cladding or exceptional applications, such as buildings for cold storage.
The principal profiled sheeting materials covered by this British Standard are steel, aluminium, fibre cement, bitumen fibre and plastics, including insulated sandwich panel assemblies of profiled sheeting, thermal insulation and linings.
In addition to referencing performance recommendations, materials and components identified by other British Standards, advice on other materials and components which are in common use but not covered by other British Standards is also given.
This British Standard is intended for use by designers, manufacturers and installers of the roofing products.
This British Standard includes profiled metal sheets which conform to the scope of BS EN 14782 but excludes profiled metal sheets used for structural purposes, which come within the scope of the BS EN 1090 series of standards.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | Foreword |
| 7 | 1 Scope 2 Normative references |
| 9 | 3 Terms and definitions Figure 1 — Geometrical definitions of profiles |
| 13 | 4 Design 4.1 General |
| 14 | 4.2 Weatherproofing properties of profiled roofing and wall cladding 5 Components 5.1 Profiled sheeting |
| 15 | Table 1 — Harmonized European self‑supporting profiled sheet standards |
| 16 | 5.2 Built‑up metal |
| 19 | Figure 2 — Schematic showing cross section of popular roofing and cladding systems |
| 21 | 5.3 Sandwich panels |
| 23 | 5.4 Rooflights |
| 27 | 5.5 Fibre cement |
| 28 | 5.6 Bitumen fibre |
| 29 | 5.7 Thermal insulation and moisture vapour control Table 2 — Common insulating materials for use with profiled roofing and wall cladding |
| 30 | 5.8 Spacers |
| 31 | Figure 3 — Bar and bracket and halter spacer kits |
| 32 | 5.9 Fixings and fasteners |
| 34 | Figure 4 — Examples of fasteners |
| 37 | Table 3 — Typical chemical composition of austenitic stainless steel fasteners (based on BS EN 10088‑2, BS EN ISO 3506‑1 and BS EN ISO 3506‑4) 5.10 Sealants and profile fillers |
| 39 | 5.11 Flashings 5.12 Gutters and rainwater goods |
| 41 | Table 4 — Standards for rainwater goods 5.13 Roof and wall penetrations |
| 43 | 5.14 Safety systems |
| 44 | Figure 5 — Minimum heights for arrest systems |
| 45 | 6 Installation and weathertightness — laps and seals |
| 46 | 6.1 Design detailing |
| 47 | Table 5 — Size, shape and position of sealant(s) for typical 150 mm roof end lap details (built up systems)A) Table 6 — Size, shape and position of sealant(s) for typical 150 mm roof end lap details (sandwich systems)A) 6.2 Profiled metal and sandwich panels |
| 48 | Figure 6 — Supported roof side lap |
| 49 | 6.3 Fibre cement sheeting 6.4 Rooflight laps |
| 51 | 7 Building physics 7.1 Temperature and thermal movement |
| 52 | Table 7 — Accommodation of thermal movement along sheets |
| 53 | Table 8 — Temperature limitations |
| 55 | Figure 7 — Examples of fixed point and floating point fastener positions for rigid aluminium flashings 7.2 Structural loads, spans and strength |
| 57 | Table 9 — Methods of determining strength and rigidity |
| 58 | Table 10 — Normal maximum permissible deflection for profiled sheeting and sandwich panels under distributed loads |
| 59 | 7.3 Safety and non‑fragility |
| 60 | 7.4 Control of condensation |
| 65 | 7.5 Limitation of energy use by control of air leakage and effective thermal insulation 7.6 Acoustics |
| 66 | Table 11 — Examples of sound pressure levels in relation to hearing thresholds and pain thresholds 7.7 Fire precautions 7.8 Artificial lighting systems |
| 67 | 7.9 Durability and coatings Table 12 — Test methods for the durability of coatings |
| 69 | Table 13 — Internal humidity classes: building types and limiting relative humiditiesA) |
| 71 | 7.10 Compatibility of materials |
| 73 | Table 14 — The effect of various exposure conditions on the durability of profiled metal sheeting materials |
| 76 | Table 15 — The effect of various exposure conditions on the durability of profiled non‑metallic sheeting materials |
| 79 | 7.11 Lightning and electrical charges 8 Inspection and maintenance 8.1 General |
| 80 | Table 16 — Checklist inspection of profiled sheet roofs 8.2 Maintenance of profiled sheeting 8.3 Indications of the need for maintenance |
| 81 | 8.4 Paint and conversion coatings 8.5 Plain aluminium 8.6 Anodized aluminium 8.7 Metallic coated steel 8.8 Fibre cement 8.9 Stainless steel |
| 82 | 8.10 Translucent sheets 8.11 GRP 8.12 PVC and polycarbonate |
| 83 | Annex A (normative) Corrosion protection Table A.1 — Corrosion categories for assessing the expected durability of profiles Annex B (normative) Impact test for wall cladding |
| 84 | Table B.1 — Categories associated with impacts on surfaces of the vertical enclosure to buildings |
| 85 | Table B.2 — Test impacts for retention of performance of exterior wall surfaces Table B.3 — Impactors for test purposes |
| 86 | Annex C (normative) Determination of strength and stiffness of profiled sheeting |
| 91 | Annex D (informative) Types of spacer kits and halters Figure D.1 — Bar and bracket spacer kit variants |
| 94 | Annex E (normative) Determination of the strength of attachment of a cladding system |
| 96 | Figure E.1 — Typical pull‑through and pull‑out test arrangements |
| 97 | Figure E.2 — Spacer kit in‑plane sway stability test set‑up |
| 99 | Figure E.3 — Space kit bracket detachment test set‑up |
| 100 | Figure E.4 — Spacer kit bracket compression test set up |
| 101 | Figure E.5 — Spacer kit‑bar bending test set‑up |
| 103 | Annex F Annex F deleted. |
| 104 | Bibliography |
