Limegreen Stipple coat is a lime based preparation coat with excellent adhesion particularly suited to difficult historic structures. Stipple coat is suitable for both high and low suction masonry backgrounds providing extra adhesion for subsequent coats of Lime Green Plaster products
If internal or external masonry walls are very smooth or highly porous, a standard lime base coat may have difficulty adhering to the surface. Lime green Stipple coat will prepare them ready for a lime plaster or lime render application.
Walls and ceilings can then be completed with a finish lime plaster such as Lime Green Ultra or Limegreen Duro,
Stipple Coat lime preparation is a lime-based product so it allows the walls to breathe and expel any trapped moisture. For non-porous sealed surfaces, such as tanking slurries, use Lime Green Grippa.
Stipple Coat can be hand-applied or machine sprayed for faster coverage.
Coverage
Approximately 1.7kg per mm of thickness over 1m². One 25kg bag will cover approx. 3m² at 4 to 5mm thick. This does not include any allowance for wastage.
Surface Preparation
Remove dust, surface contaminants and loose or friable existing render/plaster. Consolidate where necessary. Do not apply PVC or other waterproof elements and do not apply to a painted wall (ensure downspouts are not leaking on to the substrate).
Mixing
One 25kg sack will need approximately 4 to 5 litres of clean water. Mixing should be carried out in a drum or forced action mixer. When using a mixer, mix for 10 minutes, if using a mechanical whisk, mix for 2 to 3 minutes, stand for 10 minutes and then mix once more before application. Use within 30 minutes, do not re-work the mix.
Application
Always carry out a trial to ensure compatibility. Make sure you cover up surrounding area. There are several application methods. Thrown, troweled, and sprayed on with a hopper gun. Make sure you apply around 5mm in thickness, leaving the surface rough. The finished appearance should look similar to ‘roughcast’. Please see the relevant video for further advice. This can be downloaded from the Lime Green website.
Apply either Lime Green Ultra or Duro¸ as undercoats to build out and level. Lime Green Natural Finish or Solo can be used as finish coats once the backing coats have had sufficient time to cure: generally 3 days depending on conditions.
Curing
The prevention of drying out too quickly is the key to the success of the application. Lightly spray the base coat if it is too hot or drying out too quickly. In addition, protect from harsh weather conditions, for example, frosts, rain and direct sunlight. The use of damp hessian, fixed to the wall can slow down the drying out process and provide protection from adverse weather conditions.
