RJ2.02   HAIRED BASECOAT PLASTER

PRODUCT DATA SHEET

DESCRIPTION:

Non-hydraulic lime base-coat plasters produced from 6 month mature mortar grade Chalk lime putty mixed with sands and stone-dusts normally at a ratio of 1:2½ by volume. Horse or goat hair is added at 2½ kgs/ tonne.

Standard + special + matching mixes available.

USES:

For internal plaster basecoats (dubbing, pricking-up/scratch and float) where a traditional soft, porous, permeable plaster is appropriate. Base- coat plasters are applied maximum 10mm/coat and finished with Fine Finish Plaster (see RJ 2.04) and decorated with a permeable paint such as limewash (RJ3.01, RJ3.02) or Soft Distemper (RJ4.01) or Casein Distemper (RJ4.02)..

Do not apply Oil-Bound Distemper (RJ 4.03) to new lime plaster. Seek Technical Advice for External Lime Putty Renders (RJ 2.09).

AVAILABILITY:

SHELF LIFE:

The horse or goat hair deteriorates if stored for a prolonged period. Use within one month of purchase.
Protect from frost.

PACKAGES:

COVERAGE
APPROX:

50 m2/tonne at 10mm thickness.

HEALTH & SAFETY

OBSERVATIONS:

Tradesmen familiar with the use of lime plasters, and with experience of its successful use should be employed. Lime putty plasters do not perform as modern gypsum, cement or hydraulic lime based materials. Non-hydraulic lime sets only by reaction with atmospheric carbon dioxide in the presence of moisture. This 'carbonation' is a slow process and control of the drying and curing process by 'tending' and protecting is crucial to success and long term performance.
Do not use in temperatures of 5 ºC and falling.

See RJ 2.05 Use of Haired Basecoat + Fine Finish Plaster info sheet.
See Tan 07 Internal Plain Lime Plastering.
See Tan.02 Tempering of lime putty mortars and plasters.