Jablite's new range of Premium Inverted Roof Insulation is KIWA-certified and is available in a wide range of densities to meet the specified compression performance for applications from light traffic maintenance roofs to car parks and podiums.
An inverted roof construction places thermal insulation above the waterproof layer. This maintains the waterproof membrane at an even temperature and protects it from the damaging effects of UV radiation or the effects of the weather. The specified thermal performance of the inverted roof is achieved through the roof design and the thickness of the insulation used.
BBA Certificates and other supporting documents can be found in Technical ResourcesTechnical Resources
Jablite supplies insulation boards in a range of grades suitable for all flat roof applications.
Jablite Premium Inverted Roof Insulation boards in 200, 300 and 200+ grades have adequate resistance to the loads associated with light maintenance traffic on roofs, and to pedestrian foot traffic on balconies and roof terraces.
Jablite Premium Inverted Roof insulation in 500 and 600 grade meets higher loading requirements in applications such car parks and podiums.
Where paving slabs are to be placed over the insulation on spacer pads the point loads should be calculated to an equivalent uniformly distributed load (See datasheet for example).
1200 x 1200mm (with 15mm rebated edges). Board coverage 1.44m²
Single thickness 50mm up to 240mm
The table below shows average thickness of Jablite Inverted Roof Insulation range required to achieve U values from 0.25 W/m²K down to 0.10 W/m²K. The calculation is based on an inverted roof construction of 150mm reinforced concrete deck, hot melt waterproofing, Jablite Inverted Roof Insulation, Jablite Filter Membrane, drainage factor ƒx = 0.001 and average rate of precipitation (P) ≤ 3.000 (mm/day).
|U Value||THICKNESS (mm)|
|200 Premium*||200 Premium+*||300 Premium*||500 Premium||600 Premium|
|+||Does Jablite manufacture to ISO 14001?|
|Yes, Jablite is certified to the BS EN ISO 14001 Environmental Management System standard.|
|+||Is Jablite accredited to ISO 9001?|
|Yes, all Jablite sites are accredited to BS EN ISO 9001 Quality Management System.|
|+||How are Jablite products rated in the BRE Green Guide to Specification?|
|Jablite manufactures EPS (expanded polystyrene) products which are A+ rated in the BRE Green Guide, except for Jablite 300 grade insulation for inverted roofs which has an A rating|