|
Backfill for Firebacks and Boilers
BS 8303, Part 3, Clause 14
|
Both Silvaperl's vermiculite V4 and expanded perlite comply to the insulation requirements laid down in this standard. Recommended mixes:
1 part of OPC to 6 parts of Vermiculite V4
1 part of OPC to 8 parts of Perlite
|
 |
