Dunbrik Chimney Block System
The Dunbrik chimney block system comprises an outer concrete casing block with mortared joints with an inner concrete 200mm id flue liner and an insulation wrap between.
The flue liners are jointed using a fire resistant mortar to a tongue and socket detail. A precast chamber with integral gather unit allows a range of appliances to be used along with any domestic fuel.
Round liner systems to BSEN 1857 (sizes in mm)
| Product/Code | Weight Kg | Internal Diameter | External Diameter |
Width Depth | Height | ||
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Fireplace Recess Unit 675mm tall (required to form recess) Code: CB1 |
50 | - | - | 800 x 450 | 215 |
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Fireplace Gather Lintel 220mm tall Code: CB2 |
87 | - | - | 800 x 450 | 220 | |
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Raft Lintel for Stove Connection 150mm tall Code: CB10 |
95 | - | - | 1200 x 450 | 150 | |
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Flue Liners 600mm tall Code: 200L600 |
20.4 | 200mm | 260mm | - | 600 | |
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Flue Liners 150mm tall Code: 200L150 |
5 | 200mm | 260mm | - | 150 | |
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Flue Liners 230mm tall Code: 200L230 |
7.4 | 200mm | 260mm | - | 230 | |
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Straight roll pot 300mm tall -roll300 450mm tall -roll450 600mm tall -roll600 |
9.4 14 18 |
- | - | - | - | |
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Topguard steel cowl (red or buff) Code: TG260 |
1.6 | - | - | - | - |
| Product/Code | Weight Kg | Internal Diameter | External Diameter |
Width Depth | Height | ||
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Flue Installation Wrap 600mm tall Code: CB4 |
1.6 | - | - | - | 600 |
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Chimney Block 215mm tall Code: CB3 |
37 | - | - | 450 x 450 | 215 | |
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Floor Joist Restraint Bracket Code: CB16 |
0.3 | - | - | 100 x 117 | 75 | |
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Rafter Restraint Bracket 30mm tall Code: CB17 |
0.2 | - | - | 100 x 100 | 30 | |
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Chimney Tray 26.5mm tall Code: CB18 |
2.6 | - | - | 488 x 488 | 26.5 | |
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Chimney Capping 60mm tall Code: CB5 |
27 | - | - | 588 x 588 | 60 | |
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Corbel Unit 150mm tall Code: CB13 |
54 | - | - | 777 x 555 | 150 | |
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A1 Flue Liner sealant 310ml cartridge Code: DUNSEAL |
0.6 | - | - | - | - |



















