Farrow and Ball Masonry and Plaster Stabilising Primer

For use on masonry, rendered or plastered surfaces which are porous, chalky or slightly worn. Farrow & Ball Masonry & Plaster Stabilising Primer will prep the surface for an even and longer lasting finish in Farrow and Ball 15 Year Exterior Masonry, Farrow and Ball Estate Emulsion or Farrow and Ball Modern Emulsion. Available in one colour (dries clear). Not for use on fresh concrete. Not for use as a general primer on masonry surfaces (either bare or previously painted).

For best results, make sure your surface, tools and product are clean before you begin.

Preparing Concrete Surfaces for Painting

1. Leave new concrete uncoated for at least 3 months before painting
2. Repair and fill any old or unsound concrete surfaces, allowing adequate time for the filler used to cure
3. Once completely dry, brush the surface with a stiff bristled brush to remove any surface dust
4. Prime any areas that remain powdery with Farrow & Ball Masonry & Plaster Stabilising Primer
5. For interior concrete floors only apply one full coat of Farrow & Ball Masonry & Plaster Stabilising Primer followed by two coats of Farrow and Ball Modern Eggshell allowing the recommended drying times between coats
6. Do not use Farrow & Ball Masonry & Plaster Stabilising Primer as a general primer on sound concrete surfaces other than interior concrete floors

Concrete Floors

1. Old or unsound surfaces must be repaired and filled allowing adequate time to cure before repainting
2. New concrete should be left at least 3 months before painting
3. Follow with one coat of Farrow & Ball Masonry & Plaster Stabilising Primer
4. For painted concrete floors, clean and remove any surface debris. Rub down any areas that have peeled or blistered to achieve a good 'key'
5. Apply Farrow & Ball Masonry & Plaster Stabilising Primer to areas of exposed concrete

Underfloor Heating

1. Prior to application, the heating must be switched off for 48 hours to allow the surface area to cool down. Once surface has been painted, allow a further 48 hours before the heating is switched back on

Do not paint in temperatures below 10°C or in excessive heat above 30°C. Avoid painting in direct sunlight. Avoid applying outdoors if there is a likelihood of rain. For best results apply early in the day, allowing the product time to dry before the evening (when condensation can occur).

This product should be applied in accordance with Annex C of BS 6150: Code of practice for painting of buildings.

Painting Old Exterior Render

1. Please be aware that unsound surfaces may not successfully accept any additional paint layers - therefore if in doubt it is recommend you seek professional advice
2. Surfaces with serious structural damage, such as cracking or loose cement, must be repaired before any paint is applied
3. Patch prime any repaired or seriously degraded areas with one coat of Farrow & Ball Masonry & Plaster Stabilising Primer, followed by two coats of Farrow and Ball 15 Year Exterior Masonry by brush or roller
4. Take care not to apply too thickly in hollows and angled sections and allow the recommended drying times between coats
5. Fungal or algal contaminated surfaces should be decontaminated with a fungicidal wash then left to dry out completely
6. Do not use Farrow & Ball Masonry & Plaster Stabilising Primer as a general primer on sound masonry surfaces

Please Note: For a comprehensive list of preparation and application guidelines please refer to the Product Data Sheet.