Class A Rated Substructures


Wallbarn has a range of substructures and rail systems:

Class A1 Rail Substructure System
Single beam substructure for non-combustible decking and tiling systems

Key Advantages
• Class A 1 rated (EN 13501-1:2018), fully compliant with BS 8579
• Full metal substructure, zero plastic and zero rubber “gaskets”
• Specially profiled bearer rails / joists click onto Metalpad & MetalPad EX pedestals
• Fast, easy, seamless connection
• Self-levelling option available
• Greater spans between pedestals possible
• Massive height range, multiple rail build up possible
• All fixings and connectors provided
• Weight bearing and extremely stable
• Spreader plate available for larger weight distribution
• No rotting, warping or rusting
• Environmentally friendly, manufactured from recycled aluminium and fully recyclable

Class A2-s1,d0 Rail System
Substructure for non-combustible decking and tiling systems

Key Advantages
• Full Metal Substructure, made from galvanised steel
• Class A2-s1,d0 non-combustible material (EN 13501-1:2018)
• Complies to BS EN ISO 1716:2018
• Physically tested in accordance with procedure specified in BS EN 13823:2020
• Profiled Aluminium Joist clicks securely onto MetalPad
• Secure connection without mechanical fixings
• Suitable decking and paving solutions
• Very high weight tolerance
• Zero corrosion
• Creates lateral stability across deck by reducing movement
• Adjustable height with maximum flexibility
• Fully compliant with draft BS 8579

Rail system
Suspension system for laying porcelain tiles and decking

Key Advantages
• Creates lateral stability across deck by reducing movement
• Bespoke headpiece clips onto profiled aluminium joist
• Aluminium rail clicks securely onto Megapad and Mega Balance pedestals
• Timber or composite decking can also fix directly into rail for low height thresholds


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Wallbarn is a manufacturer and distributor of specialist materials for structural waterproofing, flat roofing, terraces and landscape areas. They produce solutions for rooftop living.

Wallbarn supplies:
• The largest range of PEDESTALS...
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T0208 916 2222
F0208 916 2223
WVisit Wallbarn's website
 Unit 16, Capital Business Centre, 22 Carlton Road, South Croydon, Surrey, CR2 0BS

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