External Solid Wall Insulation

• Introduction
• Materials and installation
• Planning considerations

Introduction

External solid wall insulation wraps the masonry exterior walls of the building within insulation so that rooms will cool down more slowly after the insulation is installed and hence is more suited to buildings that are heated all day rather than those that are heated intermittently.

Although the work can be completed whilst the occupants remain in the building this type of insulation is worth considering if the exterior walls are in need of repair or if major internal renovation is planned as there is a significant amount of disruption involved. Furthermore if the work is not carried out in conjunction with other repairs this form of insulation will have a very long payback period.

|Back to top

---

Materials and installation

External wall insulation is usually installed as a composite system consisting of insulation material protected by render, cladding or tiles and the use of proprietary systems with British Board of Agrement certificates are recommended. Further information is available on the British Board of Agrement and can be found by following the link to their website located in the external links section at the bottom of the page. The installation of proprietary systems must be carried out by a specialist contractor, however an architect designed system can be installed by a general builder. The External Wall Insulation Association maintains a register of proven systems and installers and further information can be obtained by contacting them at the following address:

The External Wall Insulation Association
PO Box 12
Haslemere
Surrey
GU27 3AH

Tel: 01428 654 011

The overall thickness of the insulation and render or cladding is often quite substantial so care must be taken around rainwater down-pipes, window sills and where the walls meet the roof. Certain finishes may be vulnerable to impact damage and hence may require additional protection at ground level. A specialist contractor will employ the latest approved techniques and materials to deal with these problems.

|Back to top

---

Planning considerations

Additional restrictions on the installation of external solid wall insulation may apply in certain local authority areas and particular care must be taken when considering installation within a conservation area or to a building listed as being of special architectural or historic interest. It is therefore highly advisable to check with the planning department before proceeding with any work. It is also recommended that approval is sought from building control before work commences.

|Back to top

---

Useful External Links

The following links are not part of the Haringey Council website. Please read our legal disclaimer before using these links

• British Board of Agrément

|
|