Sundolitt EPS will provide insulation levels which comply with the new Part L of Building Regulations (England & Wales) and for Scotland, Section 6 (previously Part J).
Ground floor construction methods can easily be adapted to accommodate the increased thicknesses of insulation demanded by the new regulations.
Glossary of Terms
Click here for a useful explanation of terms used throughout this website
PA Ratio
The perimeter and the area need to be measured in order to obtain the PA Ratio, which, in turn, is essentail in establishing the U Value.
The Perimeter - in metres
This should be measured as the internal finished surface of walls enclosing the heated space of the property in question. Unheated areas, for example, garages and porches, need not be included in this measurement.
For blocks of flats, the total gross groundfloor area will provide the perimeter measurement.
The Area - in square metres
This is the total area enclosed by the walls included in the periemeter measurement (above).
U Value - expressed as W/m²K
The watts per square metre, per degree of temperature difference.
• U Value Calculation Service
Click here for Sundolitt's free U Value Calculation Service.
Installation Guidelines
Damp Proof Membranes
EPS insulation is not a damp-proof membrane - DPM.
A DPM must be used to protect floors which are in contact with the ground. The membrane can be installed either above or below the slab or the EPS.
If the DPM is installed below the slab and a chipboard finish is specified, then a vapour control layer - VCL, should be laid above the EPS.
Accommodating Services
It is normal practice to accommodate gas and water piping and electrical conduits within the slab, however, if this is not possible, then these may be accommodated within the thickness of the EPS but secured to the slab.
If accommodating services within the EPS, please note:
- Water pipes must be pre-lagged and a minimum clearance of 5mm must be maintained between the EPS and any insulated hot piping
- Plasticised PVC electric cabling may react when in direct contact with EPS. Neither the thermal performance of the EPS nor the insulation properties of the cabling is affected, however, it is recommended that PVC cabling be run through a conduit
Fire
Sundolitt EPS is available to order in Euroclass e - self-extinguishing.
A solid ground floor is not required to provide fire resistance.
EPS insulation should be used in such a way that the availability of oxygen to feed a fire is minimised.
Insulation panels are normally surrounded by other materials such as concrete in substructures, or sandwiched inside walls, beneath floors or in roofs.
In the event of fire, the gasses given off by EPS do not differ essentially from those of any other organic material, consisting as it does, of 98% air.
No special measures are required for dealing with the residues or water used to extinguish a fire.
Sundolitt EPS Insulation - Standard materials
Sundolitt EPS Insulation - Applications
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