| BOARDS | BEWI GROUP |
| EQUITONE |
| HOWARTH TIMBER GROUP |
| MAGPLY |
| Rockpanel |
| wedi Systems (UK) Ltd |
| BOARDS Abrasion Resistant | BRITISH GYPSUM |
| BOARDS Acoustic | A.PROCTOR GROUP LTD |
| ACCORDIAL LTD |
| BRITISH GYPSUM |
| ROCKWOOL LTD |
| wedi Systems (UK) Ltd |
| BOARDS Acoustic / Thermal | A.PROCTOR GROUP LTD |
| ACCORDIAL LTD |
| BRITISH GYPSUM |
| ROCKWOOL LTD |
| SOPREMA UK |
| wedi Systems (UK) Ltd |
| BOARDS AGREMENT CERTIFICATE HOLDERS | A.PROCTOR GROUP LTD |
| BEWI GROUP |
| BRITISH GYPSUM |
| RADMAT BUILDING PRODUCTS LTD |
| RECTICEL INSULATION PRODUCTS |
| Rockpanel |
| wedi Systems (UK) Ltd |
| BOARDS Angle | wedi Systems (UK) Ltd |
| BOARDS Antistatic | CORDEK LTD |
| BOARDS Bacteria Resistant | MAGPLY |
| wedi Systems (UK) Ltd |
| BOARDS Ballast Retaining Boards | ANDERTON CONCRETE PRODUCTS LTD |
| BOARDS Baseboard / Backing Board | AKW-MEDICARE |
| BEWI GROUP |
| BRITISH GYPSUM |
| EPIC INSULATION LTD |
| FLEXEL INTERNATIONAL LTD |
| GAIA CLIMATE SOLUTIONS LTD |
| HOWARTH TIMBER GROUP |
| MAGPLY |
| wedi Systems (UK) Ltd |
| BOARDS Bendable Shapeable | BEWI GROUP |
| Rockpanel |
| wedi Systems (UK) Ltd |
| BOARDS BRE Global Certificate Holders | Rockpanel |
| BOARDS BS 5234 | BRITISH GYPSUM |
| BOARDS Crush Resistant | CORDEK LTD |
| BOARDS Curved | Rockpanel |
| wedi Systems (UK) Ltd |
| BOARDS Curved Surface | wedi Systems (UK) Ltd |
| BOARDS Damage Protection | MAGPLY |
| BOARDS Damp Resistant | BEWI GROUP |
| MAGPLY |
| Rockpanel |
| wedi Systems (UK) Ltd |
| BOARDS Decking Grade | BEWI GROUP |
| HOWARTH TIMBER GROUP |
| BOARDS Dimensionally Stable | Rockpanel |
| BOARDS Duct Casing Applications | TRESPA UK LTD |
| wedi Systems (UK) Ltd |
| BOARDS Environmental Product Declaration EPD EN 15804 | Rockpanel |
| BOARDS EWI External Wall Insulation Applications | BEWI GROUP |
| FORTERRA BUILDING PRODUCTS LIMITED |
| ISO-Chemie GmbH |
| ROCKWOOL LTD |
| SOPREMA UK |
| WEBER EXTERNAL WALL INSULATION SYSTEMS |
| BOARDS Expanded Polystyrene/Plaster | BRITISH GYPSUM |
| BOARDS Exterior Applications | Rockpanel |
| TRESPA UK LTD |
| BOARDS Exterior Sheathing | MAGPLY |
| Rockpanel |
| SOPREMA UK |
| TRESPA UK LTD |
| BOARDS Extruded Polystyrene Foam (XPS) Core | BEWI GROUP |
| wedi Systems (UK) Ltd |
| BOARDS Fibre Cement | EQUITONE |
| HOWARTH TIMBER GROUP |
| BOARDS Fire Door Facing Applications | MAGPLY |
| BOARDS Fire Protection | BRITISH GYPSUM |
| COMPLETE FIRE PROTECTION LTD |
| MAGPLY |
| ROCKWOOL LTD |
| BOARDS Fire Resistant | BRITISH GYPSUM |
| EQUITONE |
| Rockpanel |
| BOARDS Fire Resisting | MAGPLY |
| BOARDS Fire Retardant: | BRITISH GYPSUM |
| COMPLETE FIRE PROTECTION LTD |
| EQUITONE |
| MAGPLY |
| RECTICEL INSULATION PRODUCTS |
| Rockpanel |
| ROCKWOOL LTD |
| BOARDS Flame Retardant | CORDEK LTD |
| MAGPLY |
| Rockpanel |
| BOARDS Flooring Underlay | UZIN UTZ UK LTD |
| BOARDS Frost Proof | Rockpanel |
| BOARDS Gypsum Fibre | BRITISH GYPSUM |
| BOARDS Gypsum Plasterboard | BRITISH GYPSUM |
| HOWARTH TIMBER GROUP |
| BOARDS HETAS Approved | MAGPLY |
| BOARDS High Temperature Resistant | Rockpanel |
| BOARDS Humidity Resistant | BEWI GROUP |
| MAGPLY |
| Rockpanel |
| wedi Systems (UK) Ltd |
| BOARDS Hydrosilicate | DELTA MEMBRANE SYSTEMS LTD |
| BOARDS Impact Resistant | BRITISH GYPSUM |
| MAGPLY |
| Rockpanel |
| BOARDS Insect Attack Resistant | MAGPLY |
| Rockpanel |
| BOARDS Interior Fit-Out | BRITISH GYPSUM |
| MAGPLY |
| wedi Systems (UK) Ltd |
| BOARDS Laminated | ROCKWOOL LTD |
| BOARDS Lightweight | MAGPLY |
| Rockpanel |
| BOARDS Merchants | wedi Systems (UK) Ltd |
| BOARDS MgO Sulphate (Magnesium Oxide) | MAGPLY |
| BOARDS Mineral Fibre | Rockpanel |
| BOARDS Mineral Fibre/Plaster | BRITISH GYPSUM |
| BOARDS Mineral Wool | Rockpanel |
| BOARDS Moisture Resistant | BEWI GROUP |
| BRITISH GYPSUM |
| MAGPLY |
| Rockpanel |
| wedi Systems (UK) Ltd |
| BOARDS Mould Growth Resistant | BRITISH GYPSUM |
| MAGPLY |
| Rockpanel |
| wedi Systems (UK) Ltd |
| BOARDS Non-Combustible | BRITISH GYPSUM |
| MAGPLY |
| PAROC PANEL SYSTEM |
| Rockpanel |
| ROCKWOOL LTD |
| BOARDS OSM Offsite Manufacture | MAGPLY |
| BOARDS Partition | BRITISH GYPSUM |
| MAGPLY |
| BOARDS Pipe Cladding Applications | BEWI GROUP |
| BOARDS Polypropylene | CORDEK LTD |
| BOARDS Protection | BEWI GROUP |
| CORDEK LTD |
| BOARDS Recovery | MAGPLY |
| BOARDS Resistant to Temperature Extremes | Rockpanel |
| BOARDS Rockwool | Rockpanel |
| BOARDS Rodent Attack Resistant | Rockpanel |
| BOARDS Rot Resistant | MAGPLY |
| Rockpanel |
| wedi Systems (UK) Ltd |
| BOARDS Sheathing | MAGPLY |
| Rockpanel |
| SOPREMA UK |
| TRESPA UK LTD |
| BOARDS SIPs Panel Construction | MAGPLY |
| BOARDS Smooth Surface | Rockpanel |
| wedi Systems (UK) Ltd |
| BOARDS Sound Absorbing | wedi Systems (UK) Ltd |
| BOARDS Steam Resistant Applications | wedi Systems (UK) Ltd |
| BOARDS Structural Steel Fire Protection | BRITISH GYPSUM |
| MAGPLY |
| ROCKWOOL LTD |
| BOARDS Structural Steelwork Casing Applications | BRITISH GYPSUM |
| MAGPLY |
| ROCKWOOL LTD |
| BOARDS Termite Proof | MAGPLY |
| Rockpanel |
| BOARDS Thermal | A.PROCTOR GROUP LTD |
| BEWI GROUP |
| MAPEI UK LTD - WATERPROOFING AND CONCRETE REPAIRS |
| RECTICEL INSULATION PRODUCTS |
| BOARDS Thermally Insulating Construction Boards | BEWI GROUP |
| ISO-Chemie GmbH |
| MAPEI UK LTD - WATERPROOFING AND CONCRETE REPAIRS |
| wedi Systems (UK) Ltd |
| BOARDS Vapour Barrier Incorporated | wedi Systems (UK) Ltd |
| BOARDS Vermin Resistant | Rockpanel |
| BOARDS Water Resistant | Rockpanel |
| wedi Systems (UK) Ltd |
| BOARDS Waterproof | RECTICEL INSULATION PRODUCTS |
| wedi Systems (UK) Ltd |
| BOARDS Wetroom / Bathroom / Shower Construction | AKW-MEDICARE |
| BEWI GROUP |
| wedi Systems (UK) Ltd |
