Energy Efficiency and Historic Buildings: Insulating solid walls
Whether applied externally or internally, this type of work can have a significant impact on the appearance of the building. Wall insulation will also alter the technical performance of the solid wall and can either exacerbate existing moisture-related problems or create new ones. In some cases the technical risks of adding insulation to solid walls will be too great and alternative ways of providing a more cost effective long-term solution to improving energy efficiency may be more appropriate.
External insulation can be particularly difficult to incorporate into some older buildings as costly ancillary adaptations such as changes to the eaves and verges of roofs, drainage pipework, and window and door reveals are often required. As a consequence such works needs a high degree of quality control.
For listed buildings any form of wall insulation is likely to require consent. For many buildings, including those in conservation areas and national parks, external wall insulation will usually require planning permission.
This guidance forms one of a series of thirteen guidance notes covering the thermal upgrading of building elements such as roofs, walls and floors.
First published by English Heritage March 2012 (51585).
- Issues to consider before adding wall insulation
- Solid wall insulation
- External wall insulation
- Internal wall insulation
- Where to get advice
- Series: Guidance
- Publication Status: Completed
- Pages: 26
- Product Code: HEAG081
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