Lime Stuff

Medium Stuff - Lime Mortar


inc. VAT


Size: 1 tonne

Colour: Chalk White

OatmealChalk White


How is non hydraulic lime mortar made?

Our non hydraulic medium stuff lime mortar is made at our warehouse using our CHALK LIME PUTTY and a blend of GRIT SAND and WAREHAM WASHED SAND. It is supplied as a ready mix, meaning it is easy to use straight from the bag.  Available in chalk white or oatmeal.

*Please note our Oatmeal mix uses a new blend of sands which is different from our Oatmeal mixes produced prior to 2020. There will therefore be a slight colour variation. 

  • Easy to use straight from the bag.
  • Excellent as a mortar for thin joints
  • Available in 25kg bags. Or for larger orders, choose a half tonne bag, a tonne bag or a full pallet of 25kg bags.

What is non hydraulic lime?

Non hydraulic lime is lime in its purest form. It sets in contact with air through a process of carbonation. The slow setting process means non hydraulic lime remains softer and more breathable. It is good for internal plasterwork and for use on soft backgrounds such as cob, soft stone or friable material. Adding hair to the mix adds extra tensile strength to the plaster. This is particularly important if you are using it for lath plastering as the plaster doesn't adhere well to the timber once dried. See our LATH AND PLASTERING user guide for more information.


**If you are ordering a large quantity to arrive by pallet, please advise us of any site or access restrictions at the time of ordering.  Please be aware that delivery will be via a nationwide pallet service that will not provide a crane offload.  See our delivery terms and conditions for more details.**


As a Backing Coat of Plaster

1 tonne will plaster 48m sq @ 10mm thickness. A 25kg tub/bag will cover 1.2m sq @ 10mm

As a Finish Coat of Plaster

1 tonne will plaster 120m sq @ 3mm thickness. A 25kg tub/bag will cover 2.5 - 3.5m sq @ 3mm

For Pointing

1 tonne will point 100 - 120m sq of stonework. A 25kg tub/bag will point 4m sq in standard joints.

For Laying Bricks

1 tonne will lay approximately 900 bricks.

Customer Reviews (52)


Great product, great service. - It's the third time I have shopped with Lime Stuff. The first time I went to see them and got lots of useful advice. Since then I have ordered on line. The service is excellent. The goods arrive promptly and are always exactly as promised. The 'medium stuff' I order is great for pointing between old Devizes bricks. It's ready mixed, in a bag which is in a bucket. Even as a simple DIYer I have found it easy to use. Great company to deal with. Giles C. 2019-09-17

Great Product - I've used this particular lime putty several times. Used as a render, and also for pointing brickwork. Very versatile, quality lime. Jan B. 2019-09-01

Excellent all round - The guys at Limestuff are incredibly helpful and informative and gave this aged DIY'er the confidence to attempt a ceiling repair myself. The pre-mixed haired medium mortar mix works well, sticking easily to the new and existing laths, and the finish coat of pre-mixed fine plaster blended well with the original ceiling. All-in-all a job made easier by excellent service and excellent products. Clive L 2019-04-09

Good product . - Does its job well , & very easy to use. 2019-03-22

Lime mortar - Good product Excellent service Peter Moores 2018-09-24

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Applying non hydraulic lime

Lime putty mortar has a long shelf life if kept within the airtight containers. However, haired lime putty plaster needs to be used straight away as the alkalinity of the lime attacks the protein in the hair causing it dissolve over a period of time. 

It is important that there is no risk of frost when applying non hydraulic lime mortars. Ice crystals forming within the lime mortar will greatly increase the time it will take the carbonisation process to take place. Using HESSIAN as an insulation barrier will protect from frost action and is vital during the winter months.