Thermal Insulation


At Isothane we manufacture a range of different insulation products designed to meet the needs of a whole range of property types and project needs across a variety of different sectors.


Heat Loss Insulation





The Energy Saving Trust estimates that 25% of a homes heat loss is through the roof, 35% is through the walls and 25% is through air leakage or draughts so cavity wall and loft/roof insulation are two of the most effective energy efficiency measures anyone can install.

Our roof and cavity wall products can help to reduce this heat loss, reduce draughts so reducing your energy bills and making your home feel more comfortable. Our cavity wall foam and spray foam insulation products are closed cell polyurethane foams which not only improve the thermal performance of domestic properties but can be used in areas exposed to wind driven rain or which are prone to flooding. In addition, Technitherm® our cavity wall product is suitable for a range of properties which are not suitable for mineral fibre or wool. This means that expensive internal or external insulation is not the only answer you have available to you.

Thermal Insulation House Sprayfoam Roof Insulation Technitherm Cavity Wall Insulation





It isn’t only domestic properties that can benefit from being properly insulated, many commercial buildings can be insulated using our products to provide the same benefits a homeowner would.

Our products can be used in factories, warehouses, retail/exhibition spaces, offices and agricultural buildings. Our Pirthane product can be used to insulate soffits to achieve Class 1 surface spread of flame or with an additional coating to achieve Class 0 spread of flame.

For many of these applications the products will also prevent surface and interstitial condensation which provides benefits for the use of these buildings.

Insulation in Bunker Insulation Installer Roof Insulation in Hanger






Our contractors have worked with boat builders ranging from narrow boats to large vessels each with a need for insulation. Our insulation products have been used to insulate the ice room of a fishing vessel to help reduce the energy consumption, reduce condensation issues and most importantly make sure that the fish were fit for sale when the vessel returned to shore and to insulate narrow boats which due to the shape of the interior hull are difficult to treat.

Insulation in a narrow-boat Insulated-Boat-Outside Agrispray Insulation - Before Agrispray Insulation - After




We have an approved nationwide network of installers for both our injected and spray foam insulation products and this together with our own in-house technical team can help you find a solution to your needs. Our case studies show a small sample of the work carried out with our products and we are happy to discuss your requirements with you.


Case Studies

Car Park Insulation of Soffits

Client: Ardmore Construction, Sovereign Quay, Eastbourne. Problem: How to insulate the car park soffit of these luxury harbour side apartment...


Cavity Insulation and Stabilisation in High Rise Buildings

the client Rochdale Boroughwide Housing ‐ College Bank Apartments the problem 7 apartment blocks, built in the 60’s,with no cavity...


Cavity Wall Insulation with flood resilience

the client Severn Trent Water the problem Homesford Water Treatment Works supplies Nottingham with drinking water and has a capacity...


Digester Insulation

Client: United Utitlities Main Contractor: Galliford Costain Insulation Specialist: Isotech Problem: Rapid heat loss through the concrete digester roof was...


Domestic Roof

Client: Private home owner Project: To insulate roof to 0.16 Wm²K and stabilise tiles. Problem: This older traditional style roof...


Llandudno General Hospital

The Problem: The old slate roof over the hospital wards was suffering from nail fatigue and was beginning to require...


Seamless High Performance Roof Insulation and Stabilisation

Client: Barn conversion contractor: conversion of 6 solid wall barns at Lavant Problem: Solid wall construction did not meet Building...


Non-standard cavities - stone Stone Properties Cavity Wall Insulation

The client Blackburn with Darwen Council The problem A wide variety of houses built in the early 1900’s with variable...


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Newhouse Road,
Huncoat Industrial Estate,

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