Hemp-Limecrete information

Designed to be applied as finish to Hempire Scratch Coat. Suitable for a wide range of substrates. Background to be stable and dust free. Highly absorbent surfaces should be dampened beforehand.

The Product

Ready to use factory prepared hot lime plaster with mineral aggregates. The material has good coverage, anti-splash and good bonding characteristics.

Suitable Uses

The material is suitable as a finish coat over Hempire Scratch Coat on external surfaces and on to Hempire Hemp-Limecrete.

Composition

Milled and screened whole hemp, high calcium lime, mineral aggregates and water supplied as a pre-formulated mix, which requires some agitation before use.

Performance

Must be used as part of the Hempire External Render System. See External Render System sheet. A solid lightweight fibre reenforced material combines masonry and organic qualities. The material has good breathable, flexible and water repelling

qualities.

Delivery and Storage

  • 300Lt Crane-able Plastic Tubs.
  • 300Lt Bulk Bags

Store in a cool, dry location avoiding direct sunlight and frost.

Technical Data

  • Particle Size 0 - 2-mm,
  • Thermal Conductivity value packedλ≤ 0.24W/(mK)
  • Bulk density wet 1300-kg/ m3
  • Bulk density dry 700-kg/ m3
  • Flexural strength .83-1.14 N/mm
  • Compressive strength 1.9-3.2 N/mm
  • Fire resistant.

Health & Safety

  • X Irritant.
  • Irritates the eyes and skin.
  • Contact with skin can cause sensitization.
  • In case of contact with eyes rinse with plenty of water and seek medical advice.
  • Wear suitable protective clothing and safety goggles.

Application

Applied manually using steel plastering trowel. Spray gun can be used but superior finish achieved manually. Use only clean water without admixtures.

Use an electric hand mixer and mix thoroughly before application. Can be applied at thicknesses of 5-8 mm.

Finishing

Use steel float for fine finish.

Use wooden float for a textured finish.

Weather Conditions

Do not apply below 5°C. Application during winter months is not recommended.

Paint

Use only breathable external paints.

Background

Designed to be applied as finish to Hempire Scratch Coat. Suitable for a wide range of substrates. Background to be stable and dust free. Highly absorbent surfaces should be dampened beforehand.

Regulating Atmosphere

Externally: Avoid work below 5°C. If winter work is essential, close in work area by erecting scaffold, membrane, and thermostatically triggered heating to maintain temp above 5°C. During hot dry weather use water liberally on substrates and finished plaster to prevent crazing and re-work with wooden float. When plastering on breathable boards, take extra care to void board becoming saturated prior to application.

General Guidelines

Use bell cast at base and drip-line above openings.

High humidity and non-absorbent substrates will increase setting

time.

Plaster benefits from working and compression with wooden/

steel float.

Lime is a caustic material with abrasive mineral components.

Take care to protect finished surface from lime staining and

scratching by covering and/or cleaning as work progresses.

In renovation work mineral staining may sometimes occur.

Consult a painting expert to achieve a breathable finish.

In renovation work, strip non-breathable renders from wall, rake

out non breathable pointing provide adequate drainage around

building and ensure breathable floor is installed to avoid forced

migration of rising damp in walls. Where adequate steps have

been taken allow time for walls to gradually dry out.

For more detailed information on renovation work please refer to

our website www.hempirebuilding.net

Do not use in damp basements.

Do not use within 150 mm of outside ground level.