Celotex / SOPRATHERM  XR4000 PIR Insulation Board

SOPRATHERM XR4000 covers the thicker end of the multi-purpose PIR range, from 110mm to 200mm. It is used where a wall, floor or pitched roof requires more thermal resistance from a single insulation layer.

The 2400 x 1200mm boards have foil facings and a declared thermal conductivity of 0.022 W/mK. Larger thicknesses are heavier and need more care during handling and cutting.

Support boards properly during installation and avoid forcing over-thick cuts between timbers, which can bow the surrounding lining.

Why Choose This Product?

Choose this as a practical rigid insulation board for straightforward wall, floor or pitched-roof work. PIR gives strong thermal resistance without the depth required by most mineral wool products.

Key Features

·        110mm to 200mm PIR

·        2400 x 1200mm

·        Declared conductivity: 0.022 W/mK

·        Foil faced

Common Uses

·        Deep pitched roof insulation

·        Floor insulation

·        Framed walls

Installation

Cut boards or rolls accurately, close every joint and keep the insulation layer continuous at corners, openings and service penetrations. Use the fixings, tapes, membranes and covering layers stated for the selected construction.

Before You Install

·        Leaving narrow gaps between boards.

·        Assuming foil tape repairs large or badly cut joints.

·        Using a general-purpose board in a cavity or flat-roof application without approval.

·        Calculating quantity from pack size instead of board coverage.

Frequently Asked Questions

Is this the same as Kingspan?

It is the same broad insulation type where both products are foil-faced PIR with the same declared lambda, but approvals, facings, dimensions and application documents can differ.

Can it be used between rafters?

Yes where the product certification covers pitched roofs. Cut tightly and maintain any required ventilation path.

Can it go under a screed?

Only where the floor construction and product documentation permit it.

Should foil joints be taped?

Tape joints where the foil facing forms part of the air or vapour-control layer.

How much does one board cover?

A 2400 x 1200mm board covers 2.88m².

What You'll Need

·        Foil insulation tape

·        Low-expansion insulation foam

·        Insulation fixings

·        PIR cutting saw

·        Vapour-control layer where required

Do You Need These Too?

These products are often useful for completing this type of installation:

·        Alpha Foil Tape — Seal foil-faced board joints and repair small tears for a neat, continuous finish.

·        VCL Vapour Control Layer — Control moisture movement on the warm side of suitable roof, wall and floor constructions.

·        Double Sided Butyl DPM Sealing Tape — Seal suitable membrane laps and perimeter details; check compatibility with your chosen build-up.

You May Also Like

·        Celotex GA4000 PIR Insulation Board — another option for a similar application. Compare thickness, dimensions, thermal performance and system approval before ordering.

·        Celotex TB4000 PIR Insulation Board — another option for a similar application. Compare thickness, dimensions, thermal performance and system approval before ordering.

·        Ecotherm Eco-Versal PIR Insulation Board — another option for a similar application. Compare thickness, dimensions, thermal performance and system approval before ordering.

Looking for an Upgrade?

Kingspan Kooltherm K103 Floor Board — consider this higher-performance or more integrated route where it suits the construction and required specification.