Jablite is the UK's largest producer of EPS products for insulation and civil engineering applications



Monomitre™ insulation boards are single piece pre-mitred hip and valley joints available in EPS (expanded polystyrene) grades 100-500.

The hip and valley joints are designed to work in conjunction with Jablite insulation boards as part of a bespoke-designed roof insulation.

Key Benefits
  • Makes installation of a tapered insulation fast and easy
  • Can be bonded or mechanically fixed to the deck
  • Single layer installation
  • Resistant to moisture
  • Lightweight and durable
  • Excellent compressive strength
  • Easy to handle A+ rated in the BRE Green Guide to Specification
Downloads & Specifications

BBA Certificates and other supporting documents can be found in Technical Resources

Technical Resources
Technical information
Product specification

Jablite Monomitre™ insulation is supplied

Single piece pre-mitred hip and valley joints
As EPS 100 to EPS 500 as defined in BS EN13163
In boards sized 1200 x 1200mm
With a flame-retardant additive achieving Fire Class E
Available with 3B and SBS felts one or both sides if required
Achieves EXT.F.AB fire testing under single ply weathering membrane to BS 476: Part 3: 2004

Thermal Resistance (R value)

Indicative thermal resistance or R-value figures of Jablite Monomitre™ are:

100mm 3.03m²K/W
120mm 3.64m²K/W
140mm 4.24m²K/W
150mm 4.55m²K/W
160mm 4.85m²K/W
175mm 5.30m²K/W
200mm 6.06m²K/W


Jablite Monomitre™ is produced to the requirements of BS EN 13163 ‘Thermal insulation products for buildings – Factory made products of expanded polystyrene (EPS) – specification’.



+Is Jablite accredited to ISO 9001?
Yes, all Jablite sites are accredited to BS EN ISO 9001 Quality Management System.
+Does Jablite manufacture to ISO 14001?
Yes, Jablite is certified to the BS EN ISO 14001 Environmental Management System standard.