There are no restrictions on installing the product at low temperatures - Qualify?

EPS can be used within the temperature range -150°C to +80°C. Jablite EPS is unaffected by the normal range of climatic temperatures and can be safely used in cold stores and similar applications

Yes. Jablite produce a range of under floor heating insulation products in a variety of thicknesses and strengths to suit either screed or chipboard floor finishes for both domestic and non-domestic applications.

Jablite have 3 key products

UFH-L for screed finishes has a laminated grid top sheet - this allows easy, accurate spacing of pipes and also provides secure pipe clip fixing.

UFH-M for chipboard finishes - Moulded panels to make installation of pipe even easier - the large diameter bearing surface enables easy installation of floating chipboard floor finishes..

UFH-C for screed finishes - Castellated panel design enabling secure multi-position pipe placement below screed finishes.

Jablite EPS is A+ rated in the BRE Green Guide to Sustainability. Compared to other insulants:

• Jablite Dynamic offers U-values lower than any other conventional insulation on the market
• Jablite EPS is available in a wide variety of grades offering different compressive strengths from 70kPa to 500kPa
• Jablite EPS can be supplied in virtually any thickness, from 25mm to 600mm in a single layer saving installation time
• Jablite EPS is available in both Classic and Premium offering even lower U-values

• Jablite Dynamic Cavity can meet U-values as low as 0.07W/m²K in conventional masonry constructed walls - the lowest conventional insulation U-value in the market
• Jablite's product range exceeds Building Regulation requirements and has the solution to your specification needs.
• Whether it's a simple floor or a civil engineering application our accredited product portfolio provides the answer.
• Jablite products are flexible in terms of thickness, strength, thermal conductivity, flame retardancy and application.

Yes. Technical advice is provided by our team of construction professionals with years of experience in the industry. Click here to view our contacts page. 

No. Jablite products are available Euroclass E, containing flame retardant additives. We hold third party independent test reports and data which are available via our Technical Department on request.

Target U-values for domestic buildings in England and Wales are 0.2W/m²K in roofs insulated at rafter level, 0.16W/m²K in roofs insulated at horizontal ceiling level, 0.3W/m²K in walls and 0.22W/m²K in floors.

In Scotland there is a two tier system according to the efficiency of the boiler.

For oil boilers with a minimum SEDBUK rating of 85%, natural gas boilers with a rating of 78% and LPG boilers with a rating of 80% the requirements are as above with the exception of flat roofs and floors where the requirement is 0.25W/m²K.

For boilers below those ratings, the requirements are 0.18W/m²K in roofs insulated at rafter level, 0.16W/m²K in roofs insulated at horizontal ceiling level, 0.27W/m²K in walls and 0.22W/m²K in flat roofs and floors.

SEDBUK is the Seasonal Efficiency of Domestic Boilers in the UK.

Please contact the Jablite Technical Department with any special queries

Yes. Jablite has developed a specific product for inverted roof applications called Jablite Flat Roof Inverted (FRI). Jablite FRI is manufactured from a special bead with very low water absorbency (less than 1%) which is a key requirement for inverted roofs.

In addition Jablite FRI is

• Available in larger panels than alternative insulants for faster installation
• Available in different thicknesses so only a single piece is required meaning faster installation

Yes. EPS can be placed below or above the damp poof membrane. Because it is inert it can also be used in the ground in civil engineering applications without the risk of any leeching.

Yes. Jablite has developed Jabfill, a product specially designed for fully filling masonry cavities. Jabfill is tongue and grooved to ensure moisture is not transmitted across the cavity. It also has an external profile that aids moisture run off and prevents insulation becoming damp.

Yes. Jablite EPS can continue below the damp proof course.

No, down lighters should not be recessed into insulated ceilings as they penetrate the vapour control layer (VCL) and act like a flue, drawing warm moist air into the roof space where it condenses and drips back out of the fitting, possibly causing a fire risk.

If down lighters are to be used, they should be fitted in a false ceiling below the structural ceiling.

Yes, Jabfloor Classic and Jabfloor Premium are the most versatile insulants for use in all floor specifications and are available in:

• A wide range of compressive strengths from 70kPa grade to 500kPa.
• A wide range of thicknesses

Yes. Services such as Electric Cables, Gas and Water Pipes etc should be installed in accordance with the relevant Byelaws or Regulations and wherever possible not through the insulation zone.

EPS should not be permitted to come into contact with PVC-sheathed electrical cables since this will lead to migration of plasticiser from the PVC resulting in brittle cable sheathing. Cables should be protected by the use of a physical barrier, for example by being enclosed in conduit or by an air gap. Hot water pipes should be no closer than 12mm to the EPS and lagged or haunched with sand and cement as appropriate depending on the application.

Jablite EPS can be installed above the flat roof deck, fully supported, creating a warm roof construction or between and below the joists creating a cold roof construction. Both roof types require sufficient ventilation to reduce the risk of interstitial condensation.

When using between the joists a 50mm ventilation gap must be left above the insulation.

 Please contact our Technical Department if you are unsure as to the correct installation

You are allowed 25% of the floor area as glazing plus any windows covered by the proposal if applicable. Excessive glazing can be compensated for by over-insulating the walls, roof and floor.

Condensation is a process where water vapour contained within the atmosphere condenses into water. Condensation forms where warm air is in direct contact with a cool surface.

Condensation can form on visible surfaces like the inside surface of a wall or the inside surface of a single glazed window.

It is possible for condensation to form within the structure of a building and this is known as interstitial condensation. For example it may form on the roof timbers or within the structure of a wall if precautions are not taken.

As thermal insulation standards have risen the risk of condensation has been increased. For example if your loft is highly insulated the loft area will be very cold in winter - this in turn increases the risk of condensation forming on the underside of roof felt or the roof tiles/slates.

Condensation can be controlled with the following methods:

• Vapour control layer - a material with a high resistance to passage of water vapour e.g. polyethylene membrane. The principal is to stop moisture reaching the cold side of the insulation - where it could meet cold air and condense.
• Ventilation - a ventilated cavity left on the cold side of the insulation. Any vapour reaching the area quickly dissipates before it can condense e.g. a traditional cold roof construction.
• Good design - Careful design can minimise condensation risk. A warm frame construction can be created by placing insulation outside of a steel warm frame thus reducing the risk of condensation forming on studs.

The Jablite Technical Department can give advice and provide condensation risk analysis to ensure compliance with building regulations.

Yes. All of the Jablite Technical Department are trained to carry out U-value calculations in accordance with BR443 Conventions for U-value Calculations and ISO 6946.

Jablite Premium technology increases thermal performance by approximately 20% over Jablite Classic of identical grade. Jablite introduces graphite particles into the cell structure of conventional EPS via an extrusion process; these particles reflect infra-red radiation and thereby heat, creating a superior performing material.