Cladding tests on three tower blocks in Newport, carried out following the Grenfell Tower disaster, have revealed further concerns over the safety of the buildings.
The combination of materials used on the three 11-storey tower blocks, in Milton Court, Hillview and Greenwood, was found to be similar to a system that failed a second round of fire safety tests last weekend.
Newport City Homes, which manages the buildings, said it was 'disappointed' by the results.
The second round of large-scale tests related to category 3 aluminium composite material (ACM) with mineralwool insulation - similar to that used on the three Newport tower blocks.
Safety experts found it did not adequately resist the spread of fire over the wall to the standard required by the current Building Regulations guidance.