Warmcote™ is a lightweight, breathable, insulated traditional lime plaster mix for internal or external use.

Breathable | Lightweight | Flexible | Sustainable

Warmcote™ has been developed to offer insulation for traditional, historic buildings where the use of modern systems would be inappropriate and potentially damaging.

Used in conjunction with sustainable, breathable boards such as cork, wood fibre or sprayed hemp, Warmcote's traditional lime plaster mix can make a significant improvement to the living environment of a home, as well as reducing the energy bill and the carbon footprint. The original drive behind its development was to offer some thermal benefit to traditional 'hard to insulate' buildings, particularly timber framed buildings where it may be aesthetically undesirable to apply boards to the exterior. It is breathable, flexible, very lightweight and can be applied at practically any thickness. The best achieved so far is 8" in two passes. Warmcote is incredibly useful if you are making good damaged clay lump, cob, masonry or daub.

Warmcote is made with lightweight minerals as the aggregate in place of sand. The results of testing so far put the Lambda value of Warmcote at around 0.125 W/mK. That is about five times more thermally efficient than a standard lime plaster, and eight times better than sand and cement. For more information about the applications of Warmcote for your project, contact Best of Lime today.

£35.75 exc. VAT

Local Click & Collect or National Delivery

Please see our delivery details and minimum order quantities listed below.

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For more information on how Warmcote could suit your project, contact Best of Lime today.

Learn how to mix our lime plasters


Warmcote is a dry ready mixed feebly hydraulic lime plaster for internal or external use. It is packaged in 25kg recyclable LDPE bags.

MIXING: Pour no more than 7 litres of clean water into a mixing tub. Gently add Warmcote, mixing with a plasterer's paddle. Do not add all of the dry plaster at once, bring gradually up to the required consistency.

If necessary, add more water. There is no 'right or wrong' amount of water to add, it can be used at whatever consistency best suits the job, be it thinned down for spraying, or thick enough to hand trowel. Once the Warmcote is uniformly mixed, gently add all the fibres from the small bag and mix thoroughly. Ensure that the background is clean and free from loose and friable material. Lightly damp down, avoiding a film of water on the surface. Warmcote can be used for the full thickness of plaster from dubbing out to a polished finish in one, two or multiple coats on most backgrounds. It also works very well as a scratch coat beneath a Limecote finish. We would not recommend its use as a finish on timber frames or backgrounds where background movement is a factor.


Caution: Calcium Hydroxide is an IRRITANT.

  • Causes serious eye damage
  • Causes skin irritation
  • May cause respiratory irritation
  • Keep out of reach of children
  • Wear protective gloves, eye and face protection
  • If in eyes, rinse cautiously with water for several minutes and immediately call for medical advice
  • If on skin, wash with plenty of soap and water
  • Avoid breathing dust. If inhaled, remove the affected individual to fresh air and keep at rest in a position comfortable for breathing

The minimum order quantity for Warmcote is 5 or more bags. For orders of less than 5 bags please contact our sales office on telephone: 01440 848200 to arrange a custom delivery. We can deliver to the whole of the UK. The cost is generally governed by the number of packages. Anything more than 5 bags would go onto a pallet, up to a maximum of 40 bags per pallet (1 tonne). This will be a tail lift delivery, effectively dropped at the kerb/lorry side where safe.

Please advise us of any special delivery instructions, as we will not be held responsible for any issues arising at the delivery point. The drivers will work with you to get your pallet delivered safely and effectively. Pallet delivery costs are priced per pallet and are postcode driven, and we can offer additional services such as AM delivery and timed delivery. All are chargeable extras. This is a service that we pass on the cost that we pay - we do not make any money out of this service and we do not charge for the pallets. The other option is collection from us in Haverhill: again, this needs to be booked in. Because of lead times and safety concerns, we cannot currently accept walk-ins due to the current situation.

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House icon

Just wanted to say how fantastic your patchcoat product was to use. We have an 18th century farmhouse that we are renovating and after old skirting was removed, large patches of plaster and some brick surface came away. Put patchcoat on yesterday and it looks fantastic. So easy to mix and handle, was able to build up a broken corner by hand and mould to shape, yes still easy to put a skim coat on the shallower areas. Plus two litres of filler for £9.50 is incredible value. Will definitely be getting another tub of this as we move through the house, would use it over any other filler without hesitation. Thank you.

Peter Howie
House icon

"Limecote and Warmcote are ideal products for use on timber framed buildings and low strength substrates with their excellent flexibility, bond, and light weight compared to sanded plasters. Being dry bagged makes it easy to transport and store, with the added advantage of being able to adjust the mix to suit thin or very thick coats without compromising the product, or the quality of the finished work."

Roy Cafferty
Traditional Plastering Services
House icon

"Best Lime plaster system on the market!! I found this accidentally due to the coronavirus pandemic as stocks of everything ran out, and it's changed the way all of the plasterers in our area are now plastering conservation listed buildings as well as new builds... due to its unique formula and characteristics of extremely quick application, drying, workability and breathability. It's rare to find such a great product and more importantly a great level of customer service in the build industry."

Murray Smith

Why choose Best of Lime?

The Best of Lime materials
At Best of Lime, our traditional lime plaster products are developed under the strict rule that they must be the best of what is available. We continuously listen to and evaluate feedback from specifiers and contractors as to how certain materials perform, both on site and long term.
Our lime plasters, manufactured by us on site in rural East Anglia, are sustainable, environmentally friendly building materials which tick all the requisite conservation and green boxes. We have yet to find anything that they won't stick to, including bricks, wooden lath, straw bale, and stone.
Get in touch
For any enquiries please contact Best of Lime on 01440 848200 or email info@bestoflime.co.uk. Alternatively, click the button below and we'll get back to you as soon as possible.
Contact Us
Contact Us
Unit A | The Brocks Business Centre
Homefield Road | Haverhill
Suffolk | CB9 8QP

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