Frequently Asked Questions
Are your products suitable for historic buildings?
Yes. Our plasters and mortars are compatible and mechanically appropriate for building conservation. Anglia Lime Company has pioneered the reintroduction of medieval plasters. We work closely with The Society for The Protection of Ancient Buildings (SPAB)
I am building a strawbale building - can I use your plaster and render?
We can supply a range of ready mixed materials for use on straw bale, either lime putty or hydraulic based. For ease and speed of application, any mix that does not contain hair can be applied using a Rendergun. Alternatively Haired Chalk Mix or Fibrechalk Mix can be hand-applied for a beautiful soft, organic look.
What are the benefits of using a lime mortar on a new build property?
There are many benefits. Firstly a traditional lime mortar is far more attractive than sand and cement, it may also be possible to remove the need for unsightly movement joints. Sustainability is also an important consideration. Lime uses far less fuel to manufacture than cement, it therefore gives off less CO2 in production and, unlike cement, it also reabsorbs a high percentage of that CO2 when curing.
What would you recommend to go onto timber lath externally?
A historic timber frame is subject to continuous movement. To combat this the medieval plasterer used a particular mix that didn't contain sand. We have replicated that with the Angliamix range of plasters (Haired Chalk and Fibrechalk) and our DryReadymix Thermalime. These plasters / renders are lightweight, vapour permeable and extremely flexible, as well as easy-to-use.
How many laths will I need to cover a square metre?
For the average size of lath, you wil require 25 linear metres per square metre.
How far apart do I fix wooden laths?
The gap between each lath should be 10-12mm. Conveniently this is approximately the thickness of the tip of your little finger - a handy gauge!
Do I have to use specific fixings or nails for attaching the laths?
Any nails or screws are suitable; anodised/sheradised will assure longer life. Stainless steel are of course indestructible but tend to be extremely sharp and thus more likely to split the lath. Many contractors use stainless steel staples in a gun; staples are very useful for fixing at the end of a lath because even if it splits part of it is held down by the staple.
Useful tip: Soak the laths before fixing them. They are less likely to split and shrink, and tighten up when dry.
What product should I use for stone roof copings?
Roof copings, being very exposed to weather, require a lime mortar that is formulated to be resistant to saturation and subsequent frost damage. We would suggest one of our fast setting DryReadymix mortars that have been developed specifically for 'above the roofline' work as follows: T/2.5HWD4 for a light coloured finish. H2.5EBY4 for a neutral, greyer finish.
What product do I use to repoint a chimney?
When repointing, how many square metres will a 25kg bag of DryReadymix cover?
When repointing we recommend that the mortar be raked back to twice the bed depth. So a standard 10mm bed will be raked back to 20mm. In this instance, a 25kg bag of DryReadymix will repoint about three square metres.
Is it possible to use Lime Putty for pointing?
Yes, though historically it is unlikely that mortars would have been made with putty of the purity now produced. For this reason great care should be taken with suction control and care and protection of the mortar once in place.
Can I use a pointing gun with your mortars?
A pointing gun can be used with some of our mortars, depending on how coarse the sand is being used. This comes down to individual cases and should therefore be consulted on at the time.
What product do I use for repairs to a flint wall?
Due to the impervious nature of flint, we would recommend a minimum of an NHL2, (particularly when it is a retaining wall as is often the case with churches). A coarse, gritty sand would also be beneficial where large joints are required. We have developed a DryReadymix specifically with flint walls in mind: 2/2EBY4/D/WP/PC.
How much mortar will I need to repair a flint wall?
This isn't easy to quantify due the irregular shape of flint but we would suggest approximately twice the amount allowed for a brick wall. Therefore one 25kg bag of Flint Wall DryReadymix will cover approximately 1.5 square metres.
How many bricks will a 25kg bag of DryReadymix lay?
This depends on whether the bricks are frogged, but generally about 30.
How many square metres will a 25kg bag of DryReadymix render / plaster?
We only recommend the use of sand based plasters and renders on solid backgrounds. A 25kg bag of DryReadymix will cover 1 m sq. at 15mm, or 1.5 m sq. at 10mm.
Can you match to an existing mortar?
Can I get a coloured render?
What is the lead time on DryReadymix mortars?
We carry stock of our range of DryReadymix mortars. For bespoke mixes please allow a minimum of one week depending on the mix.
Do I have to mix DryReadymix on site?
Yes. All you have to do is add a measured amount of water and mix for up to 5 minutes. You do not have to add anything else to the mix. Each bag contains all the carefully calculated necessary ingredients for your requirements.