Please be aware that the following products are not acceptable to be used on projects registered with LABC Warranty: • Products without any recognised testing • Framed external walls without separating cavities between the outer cladding and the frame • Aggregate for use under floors with contaminates / pyrites • Basement proposal without a CSSW specialist design • Magnesium Oxide Board (MgO) external or internal • ICF proposals without ICFA membership • Rammed earth bricks • Straw bale • Single glazed windows / doors • Timber windows not covered by BS 644 • Traditional hand mixed sand and cement renders (only pre-blended bagged renders are acceptable) • Green air dried or seasoned oak is not acceptable for use in external wall, window/door construction, frame or internal wall or roof constructions Regardless of whether it forms part of the waterproof envelope or not. Projects incorporating 'green Oak' will not be acceptable for Warranty cover. Green Oak is defined for Warranty purposes as 'Oak that has been freshly cut or air dried'. Certified kiln dried Oak with a certified moisture content of 12% may be acceptable for parts of the structure where the oak does not form part of the waterproof envelope, or movement in the oak frame will not affect the waterproof envelope. If you have any queries in relation to this list, please email technical.referrals@labcwarranty.co.uk