Underfloor Heating Contractors in Counties Kerry and Cork
Lime Mortar Repointing North Mall Cork City
WAWC Roofing and Roof Repairs Contractors in Kerry and Cork.
Roofing Services we are experts in roofing and guttering and the laying and repairing of domestic & industrial roofs.
With over 30 years of experience in roof repairs in all area’s of Cork, we can supply and carry out the installation of all aspects of roofing, Slating and tiling repairs.
Slated and Tiled Roofs
Lead Valley’s Repaired and replaced, Velux windows fitted and repaired, Chimney Flashing Before and Chimney Flashing After Work
Guttering Repair we offer:
Fascias, Soffits, Gutter Installation, Gutter Cleaning.
Roofing Cork Roofing have been serving the people of since 1978. We are specialists in repairing and replacing flat roofs.
We are C2 Registered and Fully Insured. All our work is carried out by experienced professionals to the highest standards. No job too big or small and will provide a free quote.
We specialise in all types of roofing repair and replacement. We repair and replace all types of flat roofs.
Felting, Tiling, Flat Roofs, Slating and Lathing
All waste materials are removed from site. We are a proud Irish owned company and we only use the best Irish materials.
We are the Recommended Roofers Cork who specialise in flat roofs, slating and tiling which are guaranteed for 25 years.
Restoration & Conservation PVC Fascia & Soffit Flat Roof Repair
Contact Roofing in Mallow
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 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.
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
The loosefill is the main insulation layer, the thicker
it is then the more insulated the floor is, usually
approx 250mm thick
Old buildings allow moisture to be absorbed by the fabric of the building and evaporate away naturally. This is what we call a ‘breathable’ fabric.
Breathability can be important when it comes to floors in old buildings, as they often consist of stone floors laid directly on the earth. In its original situation any moisture below the floor could rise to the floor surface to evaporate away with no detriment.
If we then install a concrete insulated floor with a dampproof membrane (DPM), any moisture below the floor will continue to rise and, as the floor is now impermeable, may get pushed to the walls where it could appear as damp spots. It is this that gives rise to the idea of a breathable floor and where limecrete comes to the rescue for old building owners.
Limecrete is a mix of natural hydraulic lime and sharp sand or glass fibers are mixed in to give a more durable surface.
Once the limecrete has been installed, any breathable floor finishing material can be used to finish.
The low thermal conductivity of earth floors mean that they provide good thermal mass. They are capable of absorbing heat and releasing it when the internal temperature drops. When the earth is reasonably dry, the ground under the building will maintain a fairly stable temperature of around 10°C year round. But that is not enough to meet modern standards of thermal efficiency and potential heat loss, so some form of insulation and, perhaps ironically, a moisture barrier, is needed. Standard insulation materials are not breathable, so cannot be used, neither can a traditional DPM.
Recycled Foam Glass as an Insulator
The default option is recycled foam glass – small foamed glass beads used as the base to limecrete (rather than hardcore) – that provides both the insulation and the moisture barrier, although a breathable moisture barrier can also be used.
There is another reason why recycled foam glass may be used. Achieving true breathability is always tricky and lime is a more tricky material to work with than cement. It needs mixing in a different way, and needs different laying and curing methods.
Laying limecrete in cold or wet weather conditions can be problematic and the usual hardcore base will also be a problem. Hardcore allows capillary action that could draw up ground moisture. As a breathable floor cannot have a traditional DPM, that moisture could penetrate the limecrete and cause damp problems. There are not many non-capillary substrate materials available, which is why foamed glass beads have become the default option.
Any Floor Finishes Can Be Used
Any breathable floor finishing material will be fine. If stone, slate or tiles are used then the grout gap needs to be a little wider than usual and the adhesive must also be breathable. Wood is the most favourable and presents no problems.
Limecrete in All Old Homes
Limecrete ability to deal with naturally occurring moisture. It has nothing to do with air moving in and out of the house. A modern house, built to modern standards, will be able to deal with moisture, without the trouble and expense of breathable construction.
Geocell foam glass is now widely used under concrete construction in new builds, with a separate LABC approved systems.
When it comes to old properties with stone floors laid directly on the earth, there is an argument that these are breathable floors and if you are replacing them, then there is a need for limecrete. There are two problems with this argument:
- The stone making up the floor may or may not be breathable. Slate, for instance, is not a breathable material and was commonly used as flooring. Any ‘breathing’ (i.e. moisture dispersal) can only be through the joints between the slate slabs. The implication is that if we laid a concrete floor but left sufficient gaps around the edges, that too would be breathable.
- If we have a breathable floor, by implication at least, we will also need breathable wall.
The problem facing people converting old buildings is how to bring them to modern standards of comfort and meet the ever-growing demands for CO2 reduction while retaining the character of the original building.
A limecrete floor, laid on foamed glass, is seen as one way of helping with this problem. It prevents damp penetration, provides insulation, maintains breath ability and provides a solid, durable floor, in character with the original building. But it is an expensive option using materials that are tricky to work with, and not necessary as often as might be imagined.