BS 5803-5:1985

Foreword
Committees responsible
Specification
1 Scope
2 Definitions
3 Insulation materials
4 Condition of roof space
5 Assessment of work required in roof space
6 Application of insulation material
7 Application of additional insulation
8 Assessment of roof spaces after completion of work
9 Maintenance
10 Certification
Appendices
A Thermal insulation at rafter level
B Ventilation of roof space
C Avoidance of overheating of electric cables
Figures
1 Laying mat insulation with eaves ventilation baffle
2 Insulation with eaves ventilation
3 Soffit-less eaves: method of ventilating existing
    mat insulation
4 Insulation with eaves ventilation, cavity closure,
    insulation over joists
5 Blown fibre insulation with eaves ventilation and
    cavity closure
6 Insulation of elevated cold water tank
7 Insulation of cold water tank on joists (mat
    material)
8 Insulation of cold water tank using sheet material
9 Insulation of loft hatch
10 Typical insulation of water pipes

Specifies requirements for installation of mineral fibre and cellulose fibre insulation in pitched roof spaces in new and existing dwellings.

This Part of BS 5803 specifies requirements for the application of thermal insulation in pitched roof spaces in new and existing dwellings. It covers both the insulation of an uninsulated roof and the application of additional insulation to increase the existing standard of insulation. Insulation at rafter level is not included but advice on this type of installation is given in appendix A.

The standard specifies essential procedures and precautions to be undertaken, and makes recommendations to ensure an adequate installation.

It covers fibrous materials that may be substantially inorganic or organic and may be in the form of mats or loose-fill suitable for application by blowing.

It covers the following situations:

1. an individual dwelling where the work is carried out by an insulation installer;
2. a number of dwellings where the work is carried out by an insulation installer;
3. an individual dwelling where the work is carried out without a contract.

NOTE. In all cases the clauses covering workmanship apply.

NOTE. The titles of the publications referred to in this standard are listed on the inside back cover.