NHL 3.5 Lime Mortar
Natural Hydraulic Lime Mortar
NHL 3.5 (Moderately Hydraulic)
- It's simple, ready to mix, just add water
- 100% natural, no additives or platicisers
- Natural hydraulic lime (NHL 3.5)
- Totally breathable, virtually no shrinkage
- Tough weatherproof bags
- Easy to follow instructions and specification
- Free technical support with every order
Hydraulic lime mortar, 100% natural, does not contain any artificial additives or plasticisers.
Designed and manufactured to British Standards following English Heritage guidelines.
The lime, sands and aggregates are carefully selected and sourced from England and the UK.
Mixing the mortar is really simple.
The hydraulic lime is separated from the aggregate inside the tub in a high tensile bag.
All you need to do is empty contents of the bag into a mixer, add clean water and mix the materials to the correct consistency.
A standard drum type cement mixer is fine for mixing NHL mortar.
You can also mix by hand of course if you prefer.
Lime mortars from Conserv come complete with clear, concise instructions and free technical support.
You can call us any time for friendly, expert help and advice.
Frequently Asked Questions
"What can I use NHL 3.5 lime mortar for?"
NHL 3.5 is suitable for most types of building work in most locations and conditions.
Facing bricks, commons, blockwork, sandstone, limestone, terracotta.
Walling, bedding, pointing, re-pointing, patching.
"What is hydraulic lime mortar?"
It’s a traditional lime mortar, it does not contain cement but is mixed and applied the same way as a cement mortar.
This makes it practical for modern construction.
It has the ability to set underwater, hence the name hydraulic.
"Do I need to add cement to make it set?"
Absolutely not, hydraulic lime sets just fine.
It is often confused with hydrated lime which can be added to cement mortar to increase workability.
Genuine traditional lime mortars do not contain cement, ever.
From £10.00 + VAT
Delivery starting at £8.00 + VAT
(10+ bags at cheaper rate)
Delivery Price is for Mainland UK Only
Deliver Elsewhere? Get a Price, Get Quoted.
Availability: In Stock
How much mortar?
Estimate now with our Mortar Calculator
Did You Know?
In practical terms, mixing and working hydraulic lime mortar is just like using an OPC mortar.
Shrinkage cracks are virtually eliminated using hydraulic lime mortar due to its hydraulic set.
Major labour and time saving benefits of hydraulic lime mortar can offset the higher cost against the non-hydraulic mortar.
You can safely repair non-hydraulic with hydraulic lime mortar. They are compatible and co-exist quite happily.
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