Floor Buildup, Limecrete Floor Screed

Limecrete is a modern interpretation of a traditional lime-ash floor that can still be seen in many historic or well preserved older homes. Limecrete can be used to create an alternative to a concrete floor. It is vital to have an alternative option for a traditionally built house as an impervious, non flexible cement floor may create problems with dampness being forced into the walls at ground level which can result in poor insulation, mould growth with associated health problems and even structural damage.

Limecrete Floors Building Construction and Restoration in Limerick,Kerry and Cork.

Over the most recent couple of decades until the mid ’80s there was an inclining to utilize suspended wooden and block floors in more seasoned houses to be evacuated and a solid section laid in their place.

Suspended floors were constantly very much vented, and block floors regularly lay on common bases, that is the reason dampness underneath was by and large overseen by some methods. Impermeable cement does, in any case, cause more noteworthy issues with the dampness that normally lies underneath the building.

Since this dampness used to have the capacity to inhale into the climate, either by vanishing into the under-floor space on account of a timber floors, and after that being vented out through the block vents, or being taken up by the blocks and saturated the room air in a block floor, it never brought about any issues in the neighboring dividers.

Nonetheless, with a solid floor the dampness can’t act thusly, as it’s just way out is to ascend the dividers. As no powerful soggy confirmation course was ever incorporated with dividers in period houses, interior and outside dividers can frequently experience the ill effects of rising sodden up to a few feet over the floor.

Infusing a clammy course into brickwork has, in our experience, never delivered a successful boundary to the dampness, and introducing a consistent physical soggy course in the dividers is exceptionally costly and exceedingly troublesome to the divider structure. All the more imperatively, by diminishing the dampness content that normally happens in a divider worked without a moist course; this activity will change its entire dynamic structure, and will lessen the long haul feasibility of the block or rock work to cause issues after some time.

We have, along these lines found that the best strategy for tending to a sodden issue that is happening at the base of inside and outer dividers where solid floors have been laid, or where block or pamment floors exist is to introduce “Limecrete” floors.

Old Floor Removed 2Floor Dug out to 400mm

Limecrete floors are completely breathable and will enable dampness to move all through the floor structure in this way lessening the likelihood of causing soggy patches at the base of the inner or outer dividers.

Our floors are built in another, three section framework that gives an extremely tough base and can be done with any breathable surface, from block through to wooden boarding.

Our framework utilizes as the construct another total based with respect to frothed glass, a light-weight total that has amazing protection properties, that is non-inflammable and has a radiant execution as a free depleting layer.

Frothed Glass

Frothed Glass to a depth of 175mm

It is set up from reused glass and has no natural substance that can disintegrate. We trust that this base has an incredible favorable position over the old Lightweight Expanded Aggregate (LECA) that is usually utilized as a result of its warm and non-natural properties and its capacity to tie into a firm base by pressure.

Onto this base is laid a “piece” layer of pulverized chalk and pressure driven lime, and an extent of sharp sand to enhance work-ability, with the chalk sourced from a neighborhood chalk pit at a size changing from 0 to 6mm, which is in like manner horticultural utilize.

When this layer has been permitted to cure for a period a moment “screed” layer of a similar material is laid as a wrap up. In the event that blocks or pamments are to be laid onto this screed an extent obviously sand is included request to build the bond.

The depth of the completed floor will be 15 inches, giving an amazing warm obstruction that will deal with any dampness show, won’t move or break, and can convey any non-artistic wrap up, a workable answer for some soggy issues in more seasoned dividers.

A story radiator component can likewise be laid in the screed layer where blocks or pamments are utilized as a completed floor.

Development of Limecrete Floor

On the off chance that a warmth tangle is to be laid, it is imperative that there is no boundary to the dampness, and research has discovered that the best setup is to utilize a Devi single component tangle with a yield of 180 w for each sq. mt.

This is introduced onto the level chunk layer and the screed laid over its highest point, guaranteeing that there are no touching wires or crimps in the component, and the thermometer sender is laid between two wires.

Where pamments are being laid over the screed, these are laid specifically onto the screed while it is leveled; in this way giving a decent suction to guarantee steadiness.

Underfloor Heating Elements

Every pamment is jointed with a glue produced using blending NHL 3.5 lime and water, and once the screed has gone sufficiently off to stroll on, the joints can be indicated give an acceptable wrap up.

Completed Pamment Floor

When the floor is done, the avoiding is cut in leaving a completely breathable structure where the dampness content is overseen, and in the meantime the dependability will be guaranteed, in this way keeping the inclination for dampness to permeate into the base of the dividers.

The regions are as per the following:

Existing House ground floor = 158 m² (limecrete on 250mm compacted extended froth glass protection) (Floor complete is built timber floor introduced on treated timber secures for the lion’s share of this zone, aside from entrance lobby and utility zones which will be fitted with normal stone sections)

New form Extension ground floor = 59 m² (limecrete on 100mm kingspan protection) Floor complete is characteristic stone chunk had relations with in lime mortar fitted straightforwardly onto completed limecrete screed while still green (up to 7 days after screed establishment)

Add = 58 m² (limecrete on 100mm kingspan protection) Floor complete is normal stone piece.

All ground floor regions are fitted with underfloor warming in limecrete screed.

We have been doing our own particular research with respect to this sort of floor. As you are as of now acquainted with this ground surface development it is a guide spec for you.

Once the underfloor funnels are ran our craftsman will introduce the treated timber secures at approx 150 habitats for settling the built wooden floors before the limecrete screed.

In the event that you have any photos of limecrete floors you have finished demonstrating timber secures at the different phases of establishment I would be intrigued to see them.

Would you be able to send your citation and in the event that you have some other inquiries call me.

I will send a different email in regards to different works that I need you to cite for.

The floors are our fundamental spotlight to move the activity on so in the event that you can consent to beginning this at the earliest opportunity I will surely give you a shot at however much of the rest of the work as could reasonably be expected.

Limecrete Sub-Section of Floor

The Screed is normally 25 – 50mm thick; if you are
laying underfloor heating then the screed will need
to be 75mm thick.


For standard domestic use the limecrete slab is
100mm thick


The loosefill is the main insulation layer, the thicker
it is then the more insulated the floor is, usually
approx 250mm thick