Great Gatehouse, Hampton Court

Fine Finish Plaster (Setting Stuff)

RJ2.04

Non-hydraulic lime putty fine finish plaster produced from 12 month mature superfine grade Chalk lime putty mixed with fine or superfine sands at a ratio of 1:1 by volume.  

Environmental Considerations: 

Lime Putty plaster is an environmentally sustainable product.

Usage/Purpose: 

For internal plaster finish coats applied 2-3mm thick often in 2 coats ‘wet-on-wet’ over lime base-coat plasters normally after an interval of 2 or 3 days depending on temperature and humidity. Fine finish plaster is decorated with a permeable paint such as Pure or Casein Limewash (RJ 3.01/RJ 3.02), or Soft or Casein Distemper (RJ 4.01/RJ 4.02). Do not apply Oil-Bound Distemper (RJ 4.03) to new lime plaster.

Shelf Life: 

Unlimited. Matures with age. Lime putty plasters stiffen during storage, but can be plasticised without the addition of water by thorough whisking.

Coverage: 

165m2/tonne at 3mm thick, and 250m2/tonne at 2mm.

Availability: 

Standard + special + matching mixes available. 15 litre tubs (c.28kgs, 36/tonne). Standard mixes are supplied ex Stock.

Health & Safety: 

CALCIUM HYDROXIDE Ca(OH)2 Alkali (pH 13).

CAS No 1305-62-0.

EINECS No 215-137-3.

Danger:

H318 Causes Serious Eye Damage.

Warning:

H315 Causes skin irritation.

See Health and Safety Data Sheet RJ 5.02.

Technical Specification: 

TAN 7 Internal Plain Lime Plastering.

TGN 5 Use of Basecoat Plaster & Fine Finish.

RJ 2.02/2.02A Basecoat Plaster (with/without fibres).

RJ 2.09 External Lime Putty Renders.

Observations: 

Tradesmen familiar with the use of lime putty plaster, and with experience of its successful use should be employed. Lime putty plasters do not perform as gypsum or hydraulic lime based materials and set 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 mist-spraying, ‘tending’ and protecting is crucial to success and long term performance. Protections are essential. Do not use below a temperature of 5°C or above 25°C. Do not use if there is risk of frost.