This section provides access to MCRMA’s current range of Guidance Documents, designed to address some of the most frequently asked questions relating to building envelope systems and their components. These publications offer practical, up-to-date information to support safe, compliant, and effective design and construction across the metal roofing and cladding industry.
Our Guidance Documents cover a wide range of key topics, including:
- Working at height
- CE marking
- Installation of purlins and side rails
- CDM regulations
- Non-fragility of roofing assemblies
These documents reflect MCRMA’s ongoing commitment to promoting best practice and supporting professionals with authoritative, easy-to-understand resources.
At the bottom of this page, you will also find access to our archived Technical Design Guides, which were published between 1991 and 2010. While these earlier documents have since been superseded by our Guidance Documents, they remain a valuable reference particularly for specifiers seeking information on metal building envelope specifications from the past 25 years.
- GD41 Wind loading for metal roofing & cladding – protocol for calculations
- GD40 Understanding membranes in ventilated rainscreen facades
- GD39 Sustainability and durability of metal roofing and cladding systems Section 1: Introduction and overview CPD APPROVED
- GD39 Sustainability and durability of metal roofing and cladding systems Section 2: Sustainability in construction
- GD39 Sustainability and durability of metal roofing and cladding systems Section 3: Environmental assessment methods
- GD39 Sustainability and durability of metal roofing and cladding systems Section 4: Durability of metal roofing and cladding systems CPD APPROVED
- GD39 Sustainability and durability of metal roofing and cladding systems Section 5: Metals – steel and aluminium CPD APPROVED
- GD39 Sustainability and durability of metal roofing and cladding systems Section 6: Metals – other metals
- GD39 Sustainability and durability of metal roofing and cladding systems Section 7: Products
- GD39 Sustainability and durability of metal roofing and cladding systems Section 8: Components CPD APPROVED
- GD38 Over-roofing guidance document
- GD37 Sealing of end lap details in metal wall cladding constructions
- GD36 Cavity barriers for ventilated rainscreen façades
- GD35 Aesthetics: Assessment and evaluation of cosmetic imperfections or damage CPD APPROVED
- GD34 The definition of cladding within the construction sector CPD APPROVED
- GD33 Executive Summary. Fasteners for metal roof and wall cladding: design, detailing and installation guide
- GD33 Fasteners for metal roof and wall cladding: design, detailing and installation guide CPD APPROVED
- GD32 Self drilling fastener installation tools MCRMA guidance documents Page 2 of 3 updated 13/07/22
- GD31 Pre-laminated membrane and factory assembled insulated pre-laminated membrane gutters CPD APPROVED
- GD30 CE marking of fabricated structural steelwork for industrial, commercial and agricultural buildings
- GD29 Manufacturing tolerances for profiled metal roof and wall cladding CPD APPROVED
- GD28 Mineral wool insulation installation: best practice design guide CPD APPROVED
- GD27 Installed tolerances: best practice design guide CPD APPROVED
- GD26 Executive Summary. Aluminium fabrications: a guide to good practice
- GD26 Aluminium fabrications: a guide to good practice CPD APPROVED
- GD25 MCRMA statement on CE marking of roof walkway products
- GD24 Installation of purlins and side rails CPD APPROVED
- GD23 Inspection checklist for metal-based roofing and cladding systems
- GD22 Installing renewables on metal roofs: a checklist
- GD21 Thermal performance of buildings: non-domestic construction
- GD20 Serviceability states and deflection criteria guidance CPD APPROVED
- GD19 Effective sealing of end lap details in metal roofing constructions CPD APPROVED
- GD18 Guidance to the Construction (Design and Management) Regulations 2015
- GD17 A guide to site installation of insulated roof panels CPD APPROVED
- GD16 Guidance for snow loading on cladding CPD APPROVED
- GD15 Guidance for wind loadings on roof and wall cladding CPD APPROVED
- GD14 Guidance on fastener specification
- GD13 Non fragility of roofs: a checklist
- GD12 Composite flooring systems: sustainable construction solutions
- GD11 Fixings and fastenings for rainscreen systems
- GD10 Working at Heights: a fall prevention and safety checklist CPD APPROVED
- GD09 Fall protection anchorage standards, EN795 2012 and CE marking
- GD08 An introductory guide to rainscreen support systems
- GD07 Installation and quality of workmanship MCRMA guidance documents Page 3 of 3 updated 13/07/22
- GD06 CE marking of construction products
- GD05 CE marking Q&As download document
- GD04 MCRMA advice on retention of title clauses
- GD03 Guidance note on building regulations compliance
- GD02 Guidance on industry guarantees and warranties
- GD01 Built up systems and spacer stability
Technical Design Guide Archive
- TP20 Appropriate selection of metal thickness for use in walling and roofing applications
- TP19 A dynamic thermal modelling study of a typical metal clad building to evaluate overheating in the United Kingdom
- TP18 Conventions for calculating U-values, f-values and Ψ-values for metal cladding systems using two and three-dimensional thermal calculations
- TP17 Design guide for metal roofing and cladding to comply with energy requirements of UK Building Regulations 2006
- TP16 Guidance for the effective sealing of end lap details in metal roofing constructions
- TP15 New applications: composite construction
- TP14 Guidance for the design of metal roofing and cladding to comply with Approved Document L2:2001
- TP13 Composite slabs and beams using steel decking: best practice for design and construction
- TP12 Fasteners for metal roof and wall cladding: design, detailing and installation guide
- TP11 Metal Fabrications: Design, detailing and installation guide
- TP09 Composite roof and wall cladding panel design guide
- TP08 Acoustic design guide for metal roof and wall cladding
- TP07 Fire design of steel clad external walls for building: construction, performance standards and design
- TP06 Profiled metal roofing design guide
- TP05 Metal wall cladding design guide
- TP03 Secret fix roofing design guide
- TP02 Curved sheeting manual
- TP01 Recommended good practice for daylighting in metal clad buildings