Limecrete floor systems supplied by Mike Wye are LABC Assured. Glasscrete uses foam glass aggregate as the sub-base, and the original Limecrete floor which uses expanded clay aggregate.
If you need further information on our floor systems, or would like a free u value calculation or materials quotation please contact our technical sales team or browse our individual limecrete products here.
Materials supplied nationwide from stock. Our experienced building conservation team can provide a full installation service throughout Devon and the surrounding counties.
Glasscrete®
Glasscrete® is a modern form of limecrete floor that incorporates GEOCELL Foam Glass gravel as the moisture managing, insulating base. Foam glass is a lightweight, breathable loose lay aggregate and, being made from 100% recycled glass is sustainable insulation.
This is an updated version of the original limecrete system capable of being used as a load bearing hardcore. It also has better insulation per thickness of sub-base (approximately 20% better thermal performance compared to clay aggregate).
- Levelled and compacted ground
- Layer of geotextile membrane
- Compacted GEOCELL Foam Glass
- Layer of geotextile membrane
- U/F heating pipes attached to grid
- Lime screed/slab: 2 parts aggregate 1 part NHL5 by volume with 30 mm cork board surround. Fibratec V12 Concrete Fibres can be used for additional reinforcement (optional)
- Floor finish*
*Bedding screed 20-50 mm of 2 parts aggregate to 1 part NHL5 if using flagstones or tile as a finish. Grout with 2 parts aggregate to 1 part NHL.
Notes
- The use of GEOCELL in the capillary fringe of ground water or water source areas is not recommended. Install drainage system/capillary moisture barrier if required
- For design thicknesses greater than 300 mm, placing and compaction should be undertaken in 2 or 3 separate layers
Glasscrete Components
Glasscrete Components
Below you will find the individual components used to create a Glasscrete Floor system.
However, you don’t have to waste your time calculating volumes and costs. We have a free design and quotation service you can use – therefore all we need from you is your floor area, total available depth (or target U value), the length of the external perimeter walls, and the delivery postcode, we’ll take care of the rest!
This vapour permeable, geotextile membrane can be used for gardening or landscaping purposes. We supply it for use in a build up for breathable flooring systems. It comes in a 4.5 m roll so we cut it down into linear metre lengths as required for ease of carriage.
GEOCELL Foam Glass aggregate (or gravel) is versatile because of its unique light weight, load bearing, draining and insulating properties providing a sustainable replacement for conventional building materials.
Foam glass aggregate is a natural insulation material for underground structures that saves energy, insulates and contributes to a comfortable indoor environment. It is both economical and environmentally sound.
✔︎ EXCELLENT INSULATING VALUES: the large number of enclosed cells in each pellet, ensures excellent insulation characteristics. lambda = 0,08 w/mK
✔︎ INCREDIBLY STRONG: due to its glass cell structure, GEOCELL foam glass provides excellent compressive strength
✔︎ NON-CAPILLARY, NON COMBUSTIBLE: Cellular glass is comprised of closed cells that do not absorb water. Classified as an A1 building material
✔︎ PERMANENTLY STABLE: stability, durability, resistance against insects and rodents
✔︎ SUSTAINABLE AND ENVIRONMENTALLY FRIENDLY: made from 100% recycled glass – inert and essentially ph-neutral
✔︎ SAVING TIME AND MONEY: Foam glass is quicker to install than conventional methods cutting construction time and cost
Standard GEOCELL Foam Glass aggregate grain sizes range from 10 mm to 60 mm*.
*A 10 mm to 30 mm grade size is available for depths less than 150 mm.
Foam glass needs to be compacted by wacker plate if being used as flooring or foundations. You should allow up to 30% extra volume when calculating for a compacted application.
Secil NHL5 is fast setting and ideal for limecrete floors whether used with sand aggregates or insulating aggregate such as ‘light expanded clay aggregate’. The Secil NHL has a similar strength to the French NHLs.
NHL5 is supplied in 25 kg moisture resistant bags and due to our bulk purchasing power we can offer unbeatable prices.
Cork board insulation by SecilVit is a high performance, natural, sustainable and vapour permeable insulation.
Cork board insulation by SecilVit is made entirely from natural and renewable cork.
We supply 30 mm Cork Boards in pack or individually which are cut to size and installed against the external walls before the screed is installed. For more information on Cork Boards click here.
Limecrete (The Original)
The original form of limecrete floor offers an option using an insulating clay aggregate instead of foam glass. This can be incorporated into the slab rather than using sand and, in its coated form, can be used as an effective loose lay material below the slab to help prevent capillary action pulling moisture from the ground.
Limecrete offers a number of advantages:
✔︎ Good vapour permeability, which is important in older properties
✔︎ It can be designed to meet the insulation requirements of building regulations
✔︎ Natural and environmentally friendly
It is important to match the design of the limecrete to the needs of the building. Factors include the type of construction for both floor and walls, floor area and groundwater levels.
- Levelled and compacted ground.
- Layer of geotextile membrane.
- Loose fill. 100 mm – 500 mm layer of loose fill 10- 20 mm coated clay natural insulation.
- Layer of geotextile membrane..
- Limecrete slab 3 parts clay aggregate 1 part NHL5 by volume at 100 mm to 150 mm.
- Optional 75 mm screed of 2 parts aggregate 1 part NHL5 to bed heating pipes.
- Floor finish
Limecrete Components
Below you will find the individual components used to create a Limecrete Floor system.
However, you don’t have to waste your time calculating volumes and costs. We have a free design and quotation service you can use – therefore all we need from you is your floor area, total available depth (or target U value), the length of the external perimeter walls, and the delivery postcode, we’ll take care of the rest!
This vapour permeable, geotextile membrane can be used for gardening or landscaping purposes. We supply it for use in a build up for breathable flooring systems. It comes in a 4.5 m roll so we cut it down into linear metre lengths as required for ease of carriage.
Secil NHL5 is fast setting and ideal for limecrete floors whether used with sand aggregates or insulating aggregate such as ‘light expanded clay aggregate’. The Secil NHL has a similar strength to the French NHLs.
NHL5 is supplied in 25 kg moisture resistant bags and due to our bulk purchasing power we can offer unbeatable prices.
Techniclay expanded clay aggregate consists of lightweight, porous, ceramic granules formed by expanding special clay at high temperatures.
The coated version of the aggregate is free-draining and has negative capillary action, good load-bearing properties and good thermal qualities (k = 0.10 w/mk), and is used as an insulating layer below the limecrete slab. This is a vital part of the build-up of a limecrete floor, offering an effective vapour permeable barrier to excessive moisture levels.
See the graph image below of the test results. This shows that a minimum of 120 mm is required for a completely effective capillary barrier.
Water suction height above water surface and moisture content in kg/kg for the individual layers
The uncoated aggregate is mixed with NHL to form a limecrete slab – we recommend Secil NHL5 for this slab.
Weight varies due to the variation in moisture content.
| 50 litre bag | Bulk bag | |||||||
| Price | Weight | 1.2 m3 | Weight | 2 m3* | Weight | |||
|
0-20 mm
|
£8.25 | 22 kg | £93.00 |
570 kg
|
POA |
750-950 kg
|
||
|
2-8 mm
|
£8.50 | 22 kg | £97.50 |
500 kg
|
POA |
700-900 kg
|
||
|
10-20 mm
|
N/A | N/A | £107.00 |
500 kg
|
POA |
1,000 kg
|
||
All prices exclude carriage and VAT.
* Please note: 2 m3 bulk bags are unstable due to their height, and can only be supplied on dedicated transport to delivery locations with offload facilities. Please ask us for details.
Cork board insulation by SecilVit is a high performance, natural, sustainable and vapour permeable insulation.
Cork board insulation by SecilVit is made entirely from natural and renewable cork.
We supply 30 mm Cork Boards in pack or individually which are cut to size and installed against the external walls before the screed is installed. For more information on Cork Boards click here.