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BS 8221-2:2000

Current
Current

The latest, up-to-date edition.

Code of practice for cleaning and surface repair of buildings Surface repair of natural stones, brick and terracotta
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

15-04-2000

Publisher

British Standards Institution

Committees responsible
Foreword
Introduction
1 Scope
2 Normative references
3 Definitions
4 Considerations affecting surface repair decisions
5 Procedures associated with surface repair
6 Pointing and bedding mortars
7 Repointing
8 Stone masonry repair
9 Brickwork repair
10 Repair of terracotta and faience
11 Surface coverings
12 External render repairs
13 Treatment and protection of surfaces
14 Coatings
15 Maintenance of the exteriors of building
Annex A (informative) Non-destructive and "key-hole" survey
                      methods
Annex B (informative) Use of consolidants on weathered stone
                      and other porous materials
Bibliography
Table 1 - Austenitic stainless steel grades and uses
Table 2 - Mortar types and applications
Table 3 - Mortar mixes for Groups A1 to D5
Table 4 - Non-hydraulic mortar mixes
Table 5 - Lime mortar mixes with pozzolanic additives
Table 6 - Classification of hydraulic limes

Gives recommendations for surface repair of natural stones, clay brick, calcium silicate brick, glazed and unglazed terracotta and faience masonry in buildings. Describes repointing and selection of mortars and gives guidance on protection treatment for surfaces.

This British Standard provides recommendations for surface repair of natural stones, clay brick, calcium silicate brick, glazed and unglazed terracotta, and faience masonry in buildings. It covers repointing and selection of mortars, and provides guidance on treatment for protection of surfaces.

Surface repairs of concrete and structural repairs are not covered by this code of practice. For guidance on structural repairs, reference should be made to BS 5390 and BS 5628-1.

Committee
B/560
DevelopmentNote
Supersedes 96/108387 DC, BS 6270-1(1982) and BS 6270-2(1985) (10/2005) Reviewed and confirmed by BSI, October 2012. (09/2012)
DocumentType
Standard
Pages
30
PublisherName
British Standards Institution
Status
Current
Supersedes

11/30241242 DC : 0 BS 8221-1 - CODE OF PRACTICE FOR CLEANING AND SURFACE REPAIR OF BUILDINGS - PART 1: CLEANING OF NATURAL STONES, BRICK, TERRACOTTA AND CONCRETE
BS 8297:2000 Code of practice for Design and installation of non-loadbearing precast concrete cladding
BS 8221-1:2000 Code of practice for cleaning and surface repair of buildings Cleaning of natural stones, brick, terracotta and concrete
BS 8298-1:2010 Code of practice for the design and installation of natural stone cladding and lining General
BS 5628-3:2005 CODE OF PRACTICE FOR THE USE OF MASONRY - PART 3: MATERIALS AND COMPONENTS, DESIGN AND WORKMANSHIP
BS 8221-1:2012 Code of practice for cleaning and surface repair of buildings Cleaning of natural stone, brick, terracotta and concrete
05/30131954 DC : DRAFT APR 2005 BS 5628-3 - CODE OF PRACTICE FOR THE USE OF MASONRY - PART 3: MATERIALS AND COMPONENTS, DESIGN AND WORKMANSHIP
08/30140557 DC : DRAFT JULY 2008 BS 8298-3 - CODE OF PRACTICE FOR THE DESIGN AND INSTALLATION OF NATURAL STONE CLADDING AND LINING - PART 3: STONE-FACED PRE-CAST CONCRETE CLADDING SYSTEMS
17/30359267 DC : 0 BS EN 17138 - CONSERVATION OF CULTURAL HERITAGE - METHODS AND MATERIALS FOR CLEANING POROUS INORGANIC MATERIALS
07/19983222 DC : 0 BS 8298-1 - CODE OF PRACTICE FOR THE DESIGN AND INSTALLATION OF NATURAL STONE CLADDING AND LINING - PART 1: GENERAL
PREN 17138 : DRAFT 2017 CONSERVATION OF CULTURAL HERITAGE - METHODS AND MATERIALS FOR CLEANING POROUS INORGANIC MATERIALS

BS 882:1992 Specification for aggregates from natural sources for concrete
BS 6213:1982 Guide to selection of constructional sealants
BS 812-103.1:1985 Testing aggregates. Method for determination of particle size distribution Sieve tests
BS 6431-17:1983 Ceramic floor and wall tiles Method for determination of crazing reistance. Glazed tiles
BS 8210:1986 Guide to building maintenance management
BS EN 10088-3:2014 Stainless steels Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes
BS 5390:1976 Code of practice for stone masonry
BS 4551:1980 Methods of testing mortars, screeds and plasters
BS 1199 & 1200(1976) : 1976 AMD 5126 SPECIFICATIONS FOR BUILDING SANDS FROM NATURAL SOURCES
BS 5262:1991 Code of practice for external renderings
BS 1014:1975 Specification for pigments for Portland cement and Portland cement products
BS 6915:1988 Specification for design and construction of fully supported lead sheet roof and wall coverings
BS 4729:1990 Specification for dimensions of bricks of special shapes and sizes
BS EN 10088-2:2014 Stainless steels Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes
BS 4721:1981 Specification for ready-mixed building mortars
BS 5628-3:1985 Code of practice for use of masonry Materials and components, design and workmanship
BS 6037:1990 Code of practice for permanently installed suspended access equipment
BS 2873:1969 Specification for copper and copper alloys. Wire
BS EN ISO 3506-1:2009 Mechanical properties of corrosion-resistant stainless steel fasteners Bolts, screws and studs
BS 187:1978 Specification for calcium silicate (sandlime and flintlime) bricks
DD ENV 459-1:1995 Building lime Definitions, specifications and conformity criteria
BS 6477:1992 Specification for water repellents for masonry surfaces
BS 7913:1998 Guide to the principles of the conservation of historic buildings
BS 1139:1964 Metal scaffolding
BS 5838-2:1980 Specification for dry packaged cementitious mixes Prepacked mortar mixes
PD 6472:1974 Guide to specifying the quality of building mortars
BS EN ISO 3506-2:2009 Mechanical properties of corrosion-resistant stainless steel fasteners Nuts
BS 4887-1:1986 Mortar admixtures Specification for air-entraining (plasticizing) admixtures
BS 2482:1981 Specification for timber scaffold boards
BS 6649:1985 Specification for clay and calcium silicate modular bricks

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