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
