Calcium silicate board
1Backing boards according to EN 13823
3Vertical joint (where relevant)
4Horizontal joint (where relevant)
5Supporting frame (optional, see Figure A.3)
Figure A.2 – Configuration when no lateral spread of flame outside the specimen area on the left wing is expected.
When using the configuration according to Figure A.2 the part of the wing that is not covered by the test material shall be made of calcium silicate board.