Windsowsill Paint

59 reviews
  • £37.41
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The weather can leave the exterior of your home looking old, tired and pretty unslighty.

Windowsill Stone Coating is a water-based, high performance, stone effect paint which has been specially developed for transforming the exterior elements of your home into beautiful stone effect features.

Suitable for application onto old, weathered and pre-painted surfaces including, stone, concrete and wooden windowsills, lintels, quoin stones, window frames, doors and door surrounds, mullions and architecural mouldings.

  • Quick & easy to use
  • Very hard wearing, breathable, weather resisitant and UV stable
  • Provides an authentic finish that really does look and feel like natural stone, at a fraction of the cost
  • Environmentally friendly - water based, low VOC.

The unique ground-stone formulation of Windowsill Stone Coating makes it ideal for both keeping the outside of your home looking neat and clean.


Further Information

Suitable Materials

  • Wood & Wood Finishes
  • Marble
  • Plaster
  • Masonry & Brickwork
  • Granite
  • MDF
  • Stone
  • Tiles
  • Resin
  • Concrete
  • Pre-Painted Surfaces


Drying Time: In normal drying conditions allow a minimum of hours drying time between coats. Drying time can be reduced by circulating warm air around the painted surface. Completely cured within 72 hours under normal conditions.
Composition: Water-based
Coverage: 1 litre will complete (with the recommended 3 coats) an area approximately 2.5 meters squared. Coverage can vary depending on the condition and porosity of the substrate.
VOC Content: Minimal VOC content. This product contains max 6g/l VOC.



Prepare all surfaces well. Ensure the surface is clean, sound and dry. Repair any damage with a suitable filler. Sane pre-painted and glossy surfaces. Apply at least one coat of Stonelux Primer & Undercoat.


Stir well before use. Apply using an economy natural bristled brush or a roller. Apply a MINIMUM of 3 even coats. Avoid overspreading. Leave 2-3 hours drying time between coats. Do not over brush/roll. If brush marks remain, finish with stippling before final coat dries.


Stir well before use. Apply 2-3 full and even coats to the surface. Wet film thickness should be between 300 and 500µm. Do not over coat on corners or joints. Allow 2-3 hours drying time between coats. Various psi settings can be used for a light or heavy finish (approx. 60psi for a medium textured finish). Nozzle size: 1.8-2.5mm (gravity fed gun) or 2-5mm (texture gun). Paint can be diluted using no more than 20% water.


  • Apply a minimum of 3 coats
  • Use an economy natural bristled brush
  • Drying time can be reduced by circulating warm air around the painted surface


Do not apply in rain, temperatures below 10 degrees Celsius  or above 30 degrees Celsius or if exposure to these conditions is likely during the 72 hours curing time. 


    Technical Data Sheet:

    Material Safety Data Sheet:

    Fireplace Stone Coating Product Leaflet:

    Application Guide:

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    4.8 Based on 59 Reviews
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    Filter Reviews:
    United Kingdom United Kingdom
    • Where did you hear about us? Google search
    External window cill paint.

    Amazing product which has transformed our tired cills. Friends and family have all asked for the details!

    United Kingdom United Kingdom
    • Where did you hear about us? On line
    Very good Paint

    Easy to apply and creates a stone effect.

    paul p.
    United Kingdom United Kingdom
    • Where did you hear about us? Google
    Excellent service

    Very prompt service and excellent product

    United Kingdom United Kingdom
    • Where did you hear about us? Google

    Very easy to use, service and delivery was excellent from Stonelux. Windowsills were flaking and red in colour, but now look fabulous in Buff with stone flecks. I would happily purchase again, but hopefully I won’t be needing to do the windowsills again anytime soon!

    United Kingdom United Kingdom
    • Where did you hear about us? Google
    A decent paint

    The paint effect is good after 3 coats. Only issue is the advert on website that states free UK mainland delivery, but when you order you get charged delivery. Perhaps there has been a political or geographical shift I am not aware of. But North Edinburgh was in the UK mainland last time I checked. If you are not going to honour an advert, don't advertise it.

    Stonelux Paints

    Thank you for taking the time to leave a review, we appreciate feedback from all our customers. We have tried to make it as clear as possible on our website that where deliveries are made to Scotland, Northern Ireland, Channel Islands, Isle of Man, and Isle of Wight additional delivery charges may apply. I apologise if did not find this as clear as it should be. The area defined as Mainland UK is determined by our courier, not ourselves. Our carriage charges are linked to the prices we pay our courier, and where any additional charge is incurred, we only pass on the additional charge, not the entire delivery costs, this ensures that all our customers benefit from the same level of discount on delivery, regardless of their location within the United Kingdom. Unfortunately, this does mean that to certain areas of Scotland, there can be a delivery cost of £1.40. I hope this goes some way to explaining how our delivery charges work, however, if you would like any further information please do not hesitate to contact us. Kind regards, Stonelux

    Fiona T.
    United Kingdom United Kingdom
    • Where did you hear about us? The window showroom where we were ordering new double glazed timber windows

    The paint did the job. The windowsills and reveals look like stone, as they eould have done years ago.My decorator was very impressed by the paint.

    Fiona T. verified customer review of Windsowsill PaintFiona T. verified customer review of Windsowsill Paint