Prompt Mortar

A specialist mortar which combines the benefits of lime with the rapid set of Roman Cement. Suitable for building and pointing stone and brick in demanding situations.

Prompt mortar is one of our ‘conservation mortars' used in the repair of historic buildings. As its name suggests, Prompt mortar sets rapidly, which makes it the perfect solution for those situations and climatic conditions where normal hydraulic lime mortar would take too long to go off. This, combined with its low strength, ease of use and long-life performance makes it a first choice for conservation work and restoration projects.

This fast set mortar is available in a range of colours and can be supplied in 25kg sacks for ease of handling, or in bulk bags for use if extra speed and convenience is needed.

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Gallery

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Colours & Textures

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Data Sheet

View technical infomation about this product here. If you require any other information please contact us


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Data Sheet
MSDS

Prompt Mortar is a dry pre-bagged lime mortar made with natural hydraulic lime and Prompt Roman cement

Benefits:

  1. Walls breathe (vapour permeability)
  2. Low shrinkage (reduction of cracks)
  3. Excellent adhesion
  4. Maintains the mortar's low modulus of elasticity
  5. Fast set allowing work to continue in adverse condition
  6. Warm natural colour - light ochre
  7. Excellent sulphate resistance

Packing and availability

Available in 25kg paper bags 

Consumption

Repointing: 20kg/m² stonework; 7kg/m² brickwork.

Per 1000kg: will lay 900-1200bricks.

Rendering:1 bag will cover 1.25-1.4m2 at 10mm thickness

All figures approx.

Mixing

To a 25 kg sack add only 3.5 to 5 litres of clean water. Mix for 3 to 10 min.

Application

Before pointing or building clean and remove all dust and loose material from joints and masonry, and adequately dampen dry or high suction surfaces. Pointing and building mortars should be finished the same day. Prompt / Lime mortars also require curing.

Curing

Prompt mortars do set rapidly, however always protect the mortar against the effects of drying winds, strong sunlight, rain and frost. In warm weather gently mist spray with water after application and cover if required with damp hessian sheets. In cool weather cover fresh mortar with protective

 

Colours & Textures

Please note that colours on screen may vary from actual finishes.

Use this colour chart to narrow your choice of finishes then get in contact with us for your your colour samples.

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Barley
Cotswold
Stone
Earth
York
Ochre
Ironstone
Corfton
Bracken
Harnage
Tugford
Terracotta
Penrhyn
Farringdon
Autumn
Cinders

Knowledge & Casestudies

Here are the knowledgebase articles and case studies relating to Prompt Mortar

Click on one of the articles to see how and on what projects Prompt Mortar has been used.