Subtrates |
Backing |
Width |
Depth |
Integrity |
Insulation |
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Blockwork/Blockwork |
Polyurathane foam |
20mm |
10mm |
240 minutes |
60 minutes |
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Blockwork/Blockwork |
50 mm thick Ceramic wool |
50mm |
25mm |
240 minutes |
120 minutes |
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