Jablite's KIWA-certified Premium Tapered Inverted Roof Insulation is the only tapered insulation for inverted roofs on the market. It provides a bespoke-designed drainage fall - removing the need for a screed layer to create a fall.
Jablite Premium Tapered Roof Insulation is supplied 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 Tapered Inverted Roof 200 and 300 Premium and 200 Premium+ 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 Tapered Inverted roof 500 and 600 is available for higher loading requirements.
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).
|Size||1200 x 600 mm (with 15 mm rebated edges). Board coverage 0.72 m²|
|Thickness||Single thickness 70 – 205 mm
(in 15mm increments)
|Taper||Over the 1200 dimension|
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||AVERAGE THICKNESS (mm)|
|200 Premium*||200 Premium+*||300 Premium*||500 Premium||600 Premium|
|+||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|
|+||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.|