Paints & Finishing Products Substrate
New Lime/ Old Lime/Cement Cement Renders Renders
Painted Render (mineral paint/ limewash)
Painted Render (non-mineral paint)
Aerated Concrete/ Lime Sandstone/ strongly absorbent mineral surfaces
Preparation Use fungicide (if needed to remove lichen). After 24 hours, wash off with hot water using a jet wash.
Allow the new render to cure for 4-6 weeks. Open up surface using etching fluid (thinned with 3 to 5 parts water) or physically sand the surface.
Clean surface using Etching Fluid, (thinned with 3 to 5 parts water).
Use fungicide (if needed to remove lichen). After 24 hours, wash off with hot water using a jet wash.
Use fungicide (if needed to remove lichen). After 24 hours, wash off with hot water using a jet wash.
Use fungicide (if needed to remove lichen). After 24 hours, wash off with hot water using a jet wash.
Repairs
Carry out any repairs using appropriate materials.
n/a
Carry out any repairs using appropriate materials, allow to cure. Uneven surfaces can be filled using the silicate filler trowelled in 1-3mm layers to a max of 8mm. Allow 3-5 days to dry.
Check condtion of paint and render. Carry out repairs using appropriate materials, allow to cure.
Carry out any repairs using appropriate materials, allow to cure. Uneven surfaces can be filled using the silicate filler trowelled on 1-3mm layers to a max of 8mm. Allow 3-5 days to dry.
Carry out any repairs using appropriate materials.
Priming/ stabilising
If salts are present, Apply fixative apply Silane thinned with 2 Primer N parts water. using a solventresistent sprayer. Allow to dry for 12 hours.
Apply diluted fixative To stabilise the over the whole area. surface and equalise the absorbency, apply fixative liberally, diluted with 2 parts water using a brush.
Where any sanding of the surface has occurred, apply fixative liberally, diluted with 2 parts water using a brush.
Liberally apply Silane Primer (Silangrund) using a solvent-resistent pressure sprayer. Allow to dry for 12 hours.
IF REPAIRS HAVE TAKEN PLACE - to cover hairline cracks or to equalise any repairs, apply one coat of Quartz Filler (has a coarse grain) over the whole area using a mineral brush.
To cover hairline cracks and to equalise surface, apply two coats of Quartz Filler (has a coarse grain) over the whole area using a mineral brush.
IF REPAIRS HAVE TAKEN PLACE to cover hairline cracks or to equalise any repairs, apply one coat of Quartz Filler (has a coarse grain) over the whole area using a mineral brush.
Equalising
Painting
Natural Sand Stone/Brick
IF REPAIRS HAVE TAKEN PLACE - to cover hairline cracks or to equalise any repairs, apply one coat of Quartz Filler (has a coarse grain) over the whole area using a mineral brush.
Apply two coats of Beeckosil diluted with Fixative (20% first coat, 5% second coat) using a mineral brush or sprayer. It is vitally important to apply it evenly keeping a wet edge going so that it is lap-free. Complete single elevations in one go. Allow at least 12 hours to dry. Avoid painting in wet or cold weather (below 5°c).
Surfaces should be clean, dry, stable, salt and plant-free before applying the Beeckosil system. The paint does not hide differences in the background, therefore correct products should be chosen and all products must be carefully and evenly applied. It is ESSENTIAL that full technical sheets and application guides are consulted and test panels undertaken to ensure suitablility. This table indicates the steps for most usual conditions, and is for basic guidance only. For mineral surfaces, the Earthborn Silicate Paint is also available. See page 72. For any other surface, please contact us for application guides and technical sheets at tymawr@lime.org.uk.
tips BS-Plus has become very popular in the UK for clients with difficult walls susceptible to water penetration that they wish to keep ‘unfinished’ as stone/brick/lime and keep breathable. Contact us for technical sheets. 70
See www.lime.org.uk for technical data and latest prices
Tel: 01874 611350