Superior Sash Window Painting with Mastic Repairs
A typical sash window paint and mastic service involves:
- Preparing the original sash window
- Fully painted with 3 coats of exterior grade paints
- Replacing the external pointing with traditional sand mastic
If required, your project may also include:
- Replacing any rotten timber and any broken glass
- New sash ropes & pulley wheels
- Energy-efficient draught proofing
- Adding Brighton sash locks and ironmongery
Sash Window Sand Mastic Repairs
At Eco Sash & Case we apply burnt sand and linseed oil mastic by hand, the original method for pointing the outside facings of sash windows. This is the preferred option for listed buildings and conservation areas in Scotland because of its effectiveness and original look.
The old, loose mastic is removed and replaced with trade quality expanding foam which also helps improve insulation. The foam provides a solid base for the new sand mastic to be fitted to form a long lasting, wind and water tight flexible joint between the masonry and timber frame. We then coat the new material with PVA. Finally, we hand apply the traditional sand mastic (red or natural).
In summary, our mastic repair process includes:
- Cut out old window backing and mastic
- Apply expanding insulating foam
- Apply 1 coat PVA bonding, if required
- Re-mastic windows by hand using high quality sand mastic
Sash Windows Maintenance Plans
Why 'Eco' Sash and Case?
See why we are proud to be one of the first companies in Scotland to offer a more sustainable and eco-friendly sash window service and how we offset our carbon footprint.