
Quick Links
Design & Tech Services
© Ibstock Plc. 2026

Cast Stone Slip Cills Corner Returns for Bays 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.
Slip Cills forming 90 degree of 45 degree at bay are available to any standard or special section. Please specify the cill type and external dimension of brickwork (dimensions J, K, L, and M in the sketches). Purpose made products are available on request.
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 | Angle | Kg per unit | Chamfered | Water bar groove |
|---|---|---|---|---|---|
| T11-40-90E | 265 | 90 Degrees | 15 | No | No |
| BN11-90E | 265 | 90 Degrees | 15 | No | Yes |
| T14-40-90E | 290 | 90 Degrees | 17 | No | No |
| T11-40-135E | 236 | 135 Degrees | 16 | No | No |
| BN11-135E | 236 | 135 Degrees | 16 | No | Yes |
| T14-40-135E | 246 | 135 Degrees | 18 | No | No |
A
265
Angle
90 Degrees
Kg per unit
15
Chamfered
No
Water bar groove
No
A
265
Angle
90 Degrees
Kg per unit
15
Chamfered
No
Water bar groove
Yes
A
290
Angle
90 Degrees
Kg per unit
17
Chamfered
No
Water bar groove
No
A
236
Angle
135 Degrees
Kg per unit
16
Chamfered
No
Water bar groove
No
A
236
Angle
135 Degrees
Kg per unit
16
Chamfered
No
Water bar groove
Yes
A
246
Angle
135 Degrees
Kg per unit
18
Chamfered
No
Water bar groove
No