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Stone Cills or Sills STOCK ITEM

Stone Cills cast from Fine Quality Reconstituted Stone to simulate real Natural Stone. The Window Sill lengths below are all Stock Items in Bath Stone buff colour.

Cast Stone Cills in Bathstone buff colour



Cast Stone Cills

Stooled Cill Dimensions



Cast Stone Cills Dimensions


2019 Stock Stone Cills Prices (Trade)

Overall Length Brickwork Opening excl. VAT incl. VAT
665mm 460mm £46.18 £55.42
693mm 488mm £48.31 £57.97
778mm 573mm £54.03 £64.84
835mm 630mm £58.02 £69.62
890mm 685mm £61.78 £74.14
1003mm 798mm £69.65 £83.58
1120mm 915mm £77.79 £93.35
1228mm 1023mm £85.89 £103.07
1340mm 1135mm £93.04 £111.65
1405mm 1200mm £97.60 £117.12
1453mm 1248mm £100.89 £121.07
1547mm 1342mm £107.44 £128.93
1565mm 1360mm £108.68 £130.42
1678mm 1473mm £116.73 £140.08
1790mm 1585mm £124.30 £149.16
1975mm 1770mm £137.15 £164.58
2015mm 1810mm £139.92 £167.90
2545mm 2340mm £176.66 £211.99

Stone Cills Overview and Specification

  • Availability, usually just 2 to 4 working days from payment
  • Window sills above 1405mm length cast in 2 pieces with central joint
  • Bespoke lengths can be manufactured with lead time approx 4 weeks
  • Slip Cills, Bay Window Cills and Render Cills also available
  • Option for ex-stock collection from ST3 5BL on Commercial Vehicles; or Nationwide delivery can be arranged at additional cost
  • Suitable for timber frame or conventional brick and block construction
  • Cast Stone Cills manufactured with through coloured cast stone mix, sometimes referred to as reconstituted or high grade precast concrete
  • Stock Architectural Dressings supplied in Bathstone buff colour
  • Additional cill colours produced on Made to Order basis
  • Reproduction of cill colour is as close as is possible within the limits of photographic technology


Addstone external Stone Cills are ready off-the-shelf, as and when You need them - No need to wait for Manufacture, and always Properly Cured. No need to plan weeks or months ahead.

Produced in high quality Pre Cast Stone our stock Stooled Cills in Bath Stone Buff colour complement most brick shades. They are frequently used together with our matching Stock Window Heads and Stone Quoins by Professional Builders, Self Builders and Developers.

Stool Widths for our Cills are 102.5mm at each end. To obtain overall stone lengths, simply add total of 205mm to your Brickwork opening. Note ALL sills above 1405mm length are supplied in 2 pieces with central joint.

If you require no brick seatings at the cill ends you probably require our stock Slip Cills; and yes, we also stock the 90 degree and 45 degree corner units to create Bay Window Cills.

Currently all Stock Stone Sills are 140mm tall x 150 deep, but our range is growing fast - if you cannot find what you want, please phone - they may already have been added to the range. Deeper sections or different colours can be supplied on "Made to Order" basis - contact 01785 878 402 for further details.

We deliver across the UK, and for really Urgent jobs Same Day Collection of your Cast Stone Cills is normally available.

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