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| z/ Expansion foam |
| The expansion foam runs around the perimeter of the wall in between the glass blocks and the outside framework. It allows the blocks or the outside framework to move slightly without cracking the grout or at worst the blocks. Only needed with the rods and mortar system. |
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| Sizes |
| Avaialble to use with either the 190*190*80mm blocks OR 190*190*100mm. Can be cut thinner on site if needed. |
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