Lime plastering requires patience and a little know-how to achieve beautiful, functional and a long lasting lime plaster finish.
Lime plaster offers advantages over cement and gypsum based materials for the internal plastering of traditional properties:
- Traditional lime plaster is ‘hygroscopic’ – meaning it actively manages moisture and can help to regulate humidity levels internally and reduce problems associated with condensation.
- Their porosity allows the structure to “breathe”, therefore minimising moisture build-up in solid walls.
- Lime plaster is flexible and can therefore accommodate general movement better than modern, brittle plasters.
Check if the building is listed before starting any work. You may also need to contact the local authority Conservation Officer to discuss the project before proceeding.
Remove any existing failed plaster and paint. Check the structure for damage. Repair any defects with like-for-like materials and dub out any holes with Haired Lime Mortar.
Before each coat, dampen the background with clean water to control suction.
Materials and Tools
- 3 mm scat coat of Reabilita Cal CS, 5 kg/m²
- 15 mm scratch coat Haired Lime Mortar, 30 kg/m²
- 10 mm float coat Unhaired Lime Mortar, 20 kg/m²
- 3 mm top coat of Heritage Lime Plaster, 6 kg/m²
Limes are caustic. Always wear eye protection and protective gloves and clothing and follow the safety instructions on the labels.
For more information on the types of lime and answers to FAQs visit naturalhydrauliclime.net