Ty-Mawr Premixed Lime Base Coat Plaster

Lime Base Coat Plaster

Ty-Mawr Premixed Lime Base Coat plaster is premixed and ready-to-use, it simply requires 'knocking-up' prior to use.

It is made from our high calcium/non-hydraulic lime blended with carefully selected, high quality aggregates which help to ensure good workability as well as minimal shrinkage.

It is suitable for internal plastering but can also be used for external rendering on 'soft' substrates given appropriate application and protection.

It requires exposure to Carbon Dioxide in the presence of moisture to harden. It is therefore important to use these plasters at an appropriate time of the year and to protect them from drying too rapidly.

Application guides are printed on the bags and available below, we also have an excellent telephone support service for customers as well as courses at Ty-Mawr or on your site, so don't be put off from using them - the results are well worth it!

Properties: the most flexible and vapour permeable/breathable of the lime product family, so highly suitable for softer substrates and for solid wall or breathing construction buildings.

Used for: external plastering onto soft substrates such as strawbale, soft brick/stone, cob etc and almost always internally refer to "Choosing a Lime" in Documentation below.

For assistance with calculating the materials you require, please go to our quantity calculators where you will be asked a series of questions to help you to assess your needs or call one of our experienced sales team.

Availability: This product is available with or without hair. It is available in 1 tonne bulk bags, 25kg bags or 20 litre buckets.

  • Lime base coat plaster

Environmental metrics

Company credentials
British Standards Institute - Integrated Management System (9001:2015 and 14001:2015),
Ethical Accreditation,
RIBA Accredited CPD'S

Non-hydraulic lime

Element application zone
Internal wall and ceiling finishes

Functional advantage(s)
Vapour permeable

Recycled content

Country of manufacture
Wales (UK)

Manufacture details

Ty-Mawr Lime

Unit 5 & 12, Brecon Enterprise Park, Brecon, LD3 8BT

01874 611350

Selection Criteria

PASS endorsement is based upon a distinguished performance in these categories:

Raw material acquisition

  • Resource efficiency: Abundant and accessible material

Product use

  • Occupant health / comfort: Facilitates indoor air quality
  • Whole life costing: Easy / inexpensive maintenance

Construction properties

  • Facilitates 'Breathing' (vapour-open) construction
  • Facilitates moisture permeability
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