BS 7457:1994

Withdrawn

Specification for polyurethane (PUR) foam systems suitable for stabilization and thermal insulation of cavity walls with masonry or concrete inner and outer leaves

Available format(s)

Hardcopy , PDF

Withdrawn date

02-01-2024

Language(s)

English

Published date

15-04-1994

Publisher

British Standards Institution

Committees responsible
Foreword
Specification
Introduction
1. Scope
2. References
3. Definitions
4. Designation of polyurethane foam
5. Property requirements
6. Processing requirements
Annexes
A. (informative) Notes for designers
B. (normative) Method for the determination of masonry
     adhesion strength
C. (normative) Method for the determination of the
     polyurethane foam appearance
D. (normative) Method for the determination of
     effective density
E. (normative) Method for the determination of the
     polyurethane foam system reaction profile
Tables
1. Designation codes for thermal conductivity
2. Property requirements: type tests
3. Property requirements: quality control tests
4. Permissible deviations on declared values for
     polyurethane foam system components
List of references

Specifies the property requirements, production parameters and composition of suitable rigid polyurethane foam (PUR) systems suitable for stabilising and thermal insulation of cavity walls with masonry or concrete inner and outer leaves. Also gives definitions, tables and annexes.

This British Standard specifies the property requirements, composition, and the production parameters of suitable rigid polyurethane foam (PUR) systems, which are dispensed on site, to fill the cavities of maximum width 150 mm of suitably constructed external walls of maximum continuous cavity height 12 m which have masonry or concrete inner and outer leaves, thereby providing additional thermal insulation to such walls and simultaneously, especially in the case of damaged wall ties improving their structural integrity.

Committee	B/540
DevelopmentNote	Supersedes 92/45661 DC and BS 7457(1991) (10/2005) Reviewed and confirmed by BSI, December 2009. (11/2009)
DocumentType	Standard
Pages	12
PublisherName	British Standards Institution
Status	Withdrawn
Supersedes	BS 7457:1991

BS 7456:1991	Code of practice for stabilization and thermal insulation of cavity walls (with masonry or concrete inner and outer leaves) by filling with polyurethane (PUR) foam systems
BS 1610-2:1985	Materials testing machines and force verification equipment Specification for the grading of equipment used for the verification of the forces applied by materials testing machines
BS 4735:1974	Laboratory method of test for assessment of the horizontal burning characteristics of specimens no larger than 150 mm x 50 mm x 13 mm (nominal) of cellular plastics and cellular rubber materials when subjected to a small flame

View more information

€131.12

Excluding VAT

Product format

I agree to the DRM document license rules apply against the PDF selection made.

Please confirm that you agree to the document license rules for this document.

I agree to the document license rules .

Please confirm that you agree to the document license rules for this document.

Access your standards online with a subscription

Features

Simple online access to standards, technical information and regulations.
Critical updates of standards and customisable alerts and notifications.
Multi-user online standards collection: secure, flexible and cost effective.

Get in touch with us

BS 7457:1994

Specification for polyurethane (PUR) foam systems suitable for stabilization and thermal insulation of cavity walls with masonry or concrete inner and outer leaves

Table of Contents

Abstract

Scope

General Product Information

Standards Referencing This Book

Category

Subcategory