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Insulating Hemp Lime Plaster

From£14.50 + VAT

Insulating Hemp Lime Plaster

From£14.50 + VAT
Insulating Hemp Lime Plaster with Roman Cement admix 20l
Product Name
20Ltr Tub
out of stock

Insulating Hemp Lime Plaster with Roman Cement Admix 20L

Insulating Hemp plaster – Manufactured from Calbux 90 Quicklime, Hemp and selected aggregates and supplied with a roman cement admix. For internal application.

Womersleys are the only manufacturers in England of traditional insulating hemp plaster using Quick Lime. The Insulating hemp plaster is supplied with a natural roman cement called Prompt allowing for a thicker application of the plaster whilst still curing at depth.

The use of a Quick Lime also acts as a steriliser for the Hemp to prevent any unpleasant smells and makes for a very fatty, easy to apply and insulating plaster.
Insulating Hemp Plaster made from Quicklime was very much the traditional way to insulate the inside of exterior walls, but with the modern and far more efficient options already discussed it has become less popular, although it is still occasionally used.

The Insulating Hemp plaster is still recognised as effective at improving the air tightness and insulation value of a traditional solid wall construction, without compromising or isolating thethermal mass properties of the wall.

The plaster sets rapidly with exposure to Carbon Dioxide and in
the presence of moisture, hence it can be applied in thicker coats than conventional lime plasters.

Insulating hemp plaster should be applied at 35-50mm (in 20mm layers) on the inside face of external walls. The thermal conductivity of Insulating hemp Lime plaster is 0.07-0.09W/mk.

Although lower than other products discussed it does offer effective storage of heat and a good regulation of heat loss.

The insulated hemp lime plaster undercoat should be finished with Fine Stuff lime plaster, after the undercoat has fully dried. A hydraulic lime stipple / slurry coat should be applied first to smooth/engineering bricks.

Coverage per tub 1m2 at 15-18mm