
Quick Links
Design & Tech Services
© Ibstock Plc. 2026
Cast Stone Stooled Cills are manufactured in accordance with BS 5642. Cills are built into walls below windows and other openings in a wall.
They are manufactured to replicate natural stone Cills and come in six standard colours: Bath, Buff, Holyrood, Portland, Glamis Red & Sherwood.
Stooled Cills are built in at the time of construction. They should be bedded under the stooling only at the time of installation. At the end of construction insert a compressible backing cord into the gap between bedded stooled ends under the cill, and at the ends of the cill above the weep vents. Point with a flexible joint sealant that will prevent water penetration.
Cill reference T4-40 is designed for use with render.
*Specify Dimension E when ordering.
All Cast Stone products are UKCA/CE marked where appropriate.
Please contact our team for Declaration of Performance. Email [email protected]
Get in Touch
To speak to a member of our sales team call 0333 234 3434 - opt.1, opt. 3, or send an enquiry.
| Code | A | B | C | D | E* | F | G | Max Length | Kg per Lin/M | Chamfered | Water bar groove |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ST6 | 215 | 140 | 105 | 65 | 102.5/140 | 165 | 18 | 1547 | 56 | Yes | Yes |
| ST7 | 215 | 65 | 40 | 65 | 102.5/140 | 165 | 18 | 780 | 24 | Yes | Yes |
| ST8 | 245 | 140 | 105 | 65 | 102.5/140 | 195 | 18 | 1547 | 63 | Yes | Yes |
A
215
B
140
C
105
D
65
E*
102.5/140
F
165
G
18
Max Length
1547
Kg per Lin/M
56
Chamfered
Yes
Water bar groove
Yes
A
215
B
65
C
40
D
65
E*
102.5/140
F
165
G
18
Max Length
780
Kg per Lin/M
24
Chamfered
Yes
Water bar groove
Yes
A
245
B
140
C
105
D
65
E*
102.5/140
F
195
G
18
Max Length
1547
Kg per Lin/M
63
Chamfered
Yes
Water bar groove
Yes