Building Supplies Carryduff, Northern Ireland

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Concrete Sills


We manufacture all our own concrete sills on site. These include:-

Slim Sills/Garage Sills (Front 45mm, Width 180mm, Back 70mm):

Available in 3ft 6", 4ft, 4ft 6", 5ft and 6ft

Single Course Sills (Front 48mm, Width 270mm, Back 75mm):

Available from 2ft up to 8ft 6"  (in 6" increments) & Corner pieces

Two Course Deep Sills (Front 90mm, Width 270mm, Back 140mm):

Available from 2ft up to 8ft 6" (in 6" increments) & Corner pieces

Stone Sills (Front 90mm, Width 390mm, Back 140mm):

Sizes made to order

Timber Frame Sills (Front 90mm, Width 200mm, Back 140mm):

Sizes made to order

We also manufacture corner sills to suit bay windows etc, and we can supply stool pieces if required for our two course sills. 

For more information call us now on 028 9081 3396

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Our opening hours are as follows

Mon-Fri 7.45am - 5pm (Closed for lunch daily 1-1.30pm)

Saturday - 7.45am - 1pm

Contact Us:
Tel : 028 9081 3396
Fax : 028 9081 5225
Email :

Carryduff Building Supplies Ltd.
116 Hillsborough Road
BT23 6AZ