15
Chimney Lining Components
A
B
Type 570
EXPANSION JOINT
The expansion joint must be used at the top of the masonry stack to close off the stack and to
allow for thermal expansion within the chimney system. It is provided as a closure plate with a
removable adjustable pipe section. The previous pipe section should terminate 200mm below
the top of the chimney stack. The top of the masonry stack should be prepared with a layer of
cement. Then the adjustable pipe length slides down a minimum of 50mm into the proceeding
pipe length, with the expansion joint plate bedding down firmly into the cement at the top of
the masonry stack. The joint between the plate and the adjustable pipe length should be sealed
using an appropriate high temperature sealant. Once securely in place, the plate should be
flaunched to make weatherproof.
Cantilever Support Adjustment Dimention Table
Int Ø
80 100 130 150 180 200 230 250 300
C max
Type 325 170 140 95 65 - - - - -
Type 457 320 290 245 215 170 140 95 65 --
Type 570 415 385 340 310 265 235 190 160 85
C min
Type 325 60 60 60 60 60 60 60 60 60
Type 457 60 60 60 60 60 60 60 60 60
Type 570 60 60 60 60 60 60 60 60 60
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