JB Construction & Restoration

Lime Mortars

Traditional Fat Lime Mortar

Old and historic buildings will require re-pointing as the mortar gradually deteriorates.

Choosing a lime mortar will ensure the building continues to function as it was designed.

Note: a lime mortar is not a cement mortar which a shovel of hydrated lime!

Pre-Mixed Lime Mortar is usually made by blending fat lime putty with specially selected aggregates; it is suitable for both building and pointing. The mortar is supplied ready-to-use but will require 'knocking-up' prior to use - ideally using a mortar mill. A range of standard mortars is available, but should you wish to match an existing mortar, we could advise on an appropriate mix by analysing a sample of the original mortar.#

Benefits:

• gives a consistent, accurate mix hence removes the potential for mixing and gauging errors on-site.
• minimises waste - enables you to 'knock-up' as much as you require in a day, anything left over can be reused, so nothing goes to waste.
• helps to keep the site organised and clean.
• colour and texture variations can be accomodated making sure regional variations are maintained.
• high quality aggregate selection produces a very workable 'fatty' mix, minimising shrinkage.

You should be aware that aggregates occasionally run out, eg, if a quarry closes. If it is important that you maintain the colour for the whole job, then you should ensure that you purchase sufficient supplies where possible.

Selecting a Mortar

It is important when re-pointing an old building to select an appropriate mortar. Consideration should be given to both the colour and the texture of the original mortar (unless it is to be subsequently limewashed).

	Re - pointing with Traditional Fat Lime Mortar