BS 1251:2015 - Open-fireplace components
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BS 1251:2015

Open-fireplace components

Status : Confirmed, Current   Published : March 2015



This British Standard specifies requirements for components which, when assembled in accordance with BS 8303, form the setting for inset open fires of nominal sizes 400 mm and 450 mm (see Figure 1).

Clause 3 specifies requirements for firebacks for inset open fires without boilers or underfloor air supply used with solid fuel.

Clause 4 specifies requirements for prefabricated fireplace surrounds and hearths and excludes constructional hearths at floor level (see Figure 1).

Clause 5 specifies requirements for precast, reinforced concrete throat-forming lintels, excluding those designed to form part of a complete appliance.


Lintels conforming to this British Standard are suitable for use as load-bearing supports for brickwork.


Requirements for fireguards are specified in BS 8423.

Standard NumberBS 1251:2015
TitleOpen-fireplace components
StatusConfirmed, Current
Publication Date31 March 2015
Confirm Date15 May 2020
Normative References(Required to achieve compliance to this standard)BS 4550-3, BS 4550-6, BS EN 14647, BS EN 12390-3, BS EN 12620, BS EN 197-1, BS 8303:2018
Informative References(Provided for Information)BS 8423, Building Regulations (Northern Ireland) 2012, BS EN ISO 10545-3, Building (Scotland) Regulations 2004, Building Regulations 2010 (England and Wales)
ReplacesBS 1251:1987
Draft Superseded By13/30157623 DC
DescriptorsReinforced concrete, Design, Lintels, Prefabricated parts, Marking, Firebacks, Construction systems parts, Compressive strength, Frames for openings, Heating tests, Thermal resistance, Dimensions, Hearths, Components, Fixing, Solid fuels, Throats (chimneys)
ISBN978 0 580 57839 7
File Size736 KB

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