PAS 2035: 2019 - Revision history

Editor at 10:41, 2 April 2025

2025-04-02T10:41:47Z

← Older revision		Revision as of 10:41, 2 April 2025
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	[[File:Extinction_rebellion_march.png\|link=File:Extinction_rebellion_march.png]]		[[File:Extinction_rebellion_march.png\|link=File:Extinction_rebellion_march.png]]

−	This article was written at a time when the government called a climate change emergency, and a new specification intended to improve the energy efficiency of UK homes was introduced by improving retrofitting practices.	+	= Context updates =

−	= ~~Introduction~~ =	+	This article was written in February 2020 at a time when the government called a climate change emergency, and a new specification intended to improve the energy efficiency of UK homes was introduced by improving retrofitting practices. Three years later in September 28th 2023, an update to PAS 2035 was published by BSi known as PAS 2035:2023. A transition arrangements for the shift between PAS 2035:2019 to PAS 2035:2023 was arranged allowing for its continued recognition, this transiation ended on 5 March 2025. At this point the 2019 version was withdrawn and all new projects were required to adhere to the new 2023 version.
		+
		+	Indicatively the standard revisions are said to more closely reflect national policy, with emphasise being on the role of PAS 2035 in protecting the consumer, the differences between PAS 2035:2019 and PAS 2035: 2023 might be described as:
		+
		+	* The inclusion of clauses have been included to facilitate scale retrofit
		+	* The inclusion of BEIS retrofit technical guides
		+	* The simplification of the risk assessment process to avoid unintended complexities.
		+	* The change in emphasis from measures-based retrofit to whole dwelling retrofit reflected in the document.
		+	* The requirements for an airtightness strategy an potentially an airtightness target and air leakage testing.
		+	* The changes brought in line with the new Approved Document F.
		+	* Monitoring and Evaluation now from inception to completion with references to the new BS 40101 standard.
		+	* Process for the distressed replacement of heating appliances to retrospectively comply.
		+	* Pre-installation building inspection requirements and qualifications for independent inspections strengthened.
		+	* Requirements and guidance on moisture in buildings has been brought in line with the language of BS 5250
		+
		+	= Background to PAS 2035 =

	The British Standards Institution, BSI, published PAS 2035: 2019: Retrofitting Dwellings for Improved Energy Efficiency – Specification and Guidance. The PAS describes a ‘publicly available specification’. While it is not officially a ‘standard’, it is a document that is likely to have a major effect on the way UK homes are retrofitted. It applies to homes of all ages and types and therefore includes traditional buildings.		The British Standards Institution, BSI, published PAS 2035: 2019: Retrofitting Dwellings for Improved Energy Efficiency – Specification and Guidance. The PAS describes a ‘publicly available specification’. While it is not officially a ‘standard’, it is a document that is likely to have a major effect on the way UK homes are retrofitted. It applies to homes of all ages and types and therefore includes traditional buildings.

Editor at 09:57, 2 April 2025

2025-04-02T09:57:01Z

← Older revision		Revision as of 09:57, 2 April 2025
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	[[File:Extinction_rebellion_march.png\|link=File:Extinction_rebellion_march.png]]		[[File:Extinction_rebellion_march.png\|link=File:Extinction_rebellion_march.png]]

−	At a time when the government ~~has~~ called a climate change emergency, a new specification is intended to improve the energy efficiency of UK homes by improving retrofitting practices.	+	This article was written at a time when the government called a climate change emergency, and a new specification intended to improve the energy efficiency of UK homes was introduced by improving retrofitting practices.

	= Introduction =		= Introduction =

−	The British Standards Institution, BSI, ~~has recently~~ published PAS 2035: 2019: Retrofitting Dwellings for Improved Energy Efficiency – Specification and Guidance. PAS describes a ‘publicly available specification’. While it is not officially a ‘standard’, it is a document that is likely to have a major effect on the way UK homes are retrofitted. It applies to homes of all ages and types and therefore includes traditional buildings.	+	The British Standards Institution, BSI, published PAS 2035: 2019: Retrofitting Dwellings for Improved Energy Efficiency – Specification and Guidance. The PAS describes a ‘publicly available specification’. While it is not officially a ‘standard’, it is a document that is likely to have a major effect on the way UK homes are retrofitted. It applies to homes of all ages and types and therefore includes traditional buildings.

	The devastating effects of climate change are increasingly being recognised: a sharp reminder is the UK government calling a ‘climate change emergency’ in May 2019. With many statistics indicating that the homes of today will be around for a very long time (estimates vary but an EU briefing in 2014 reported that ‘at least’ two thirds of existing buildings will be around in 2050), there is a lot of emphasis on making existing buildings more energy efficient.		The devastating effects of climate change are increasingly being recognised: a sharp reminder is the UK government calling a ‘climate change emergency’ in May 2019. With many statistics indicating that the homes of today will be around for a very long time (estimates vary but an EU briefing in 2014 reported that ‘at least’ two thirds of existing buildings will be around in 2050), there is a lot of emphasis on making existing buildings more energy efficient.

Editor: moved PAS 2035 to PAS 2035: 2019

2025-04-02T09:49:43Z

moved PAS 2035 to PAS 2035: 2019

← Older revision

Revision as of 09:49, 2 April 2025

Editor at 12:56, 13 October 2021

2021-10-13T12:56:13Z

← Older revision		Revision as of 12:56, 13 October 2021
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	--[[User:Institute_of_Historic_Building_Conservation\|Institute of Historic Building Conservation]]		--[[User:Institute_of_Historic_Building_Conservation\|Institute of Historic Building Conservation]]

−	= Related articles on Designing Buildings ~~Wiki~~ =	+	= Related articles on Designing Buildings =

	* Bonfield Review.		* Bonfield Review.
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	* How to deal with retrofit risks.		* How to deal with retrofit risks.
	* IHBC articles.		* IHBC articles.
		+	* IHBC COP26 virtual Conservation Helpdesk+.
	* IHBC responds to Energy Company Obligation ECO4 and PAS 2035.		* IHBC responds to Energy Company Obligation ECO4 and PAS 2035.
	* National Retrofit Strategy NRS.		* National Retrofit Strategy NRS.

Editor at 10:00, 13 September 2021

2021-09-13T10:00:28Z

← Older revision		Revision as of 10:00, 13 September 2021
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	* How to deal with retrofit risks.		* How to deal with retrofit risks.
	* IHBC articles.		* IHBC articles.
		+	* IHBC responds to Energy Company Obligation ECO4 and PAS 2035.
	* National Retrofit Strategy NRS.		* National Retrofit Strategy NRS.
	* New energy retrofit concept: 'renovation trains' for mass housing.		* New energy retrofit concept: 'renovation trains' for mass housing.

Editor at 11:39, 31 August 2021

2021-08-31T11:39:56Z

← Older revision		Revision as of 11:39, 31 August 2021
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	* National Retrofit Strategy NRS.		* National Retrofit Strategy NRS.
	* New energy retrofit concept: 'renovation trains' for mass housing.		* New energy retrofit concept: 'renovation trains' for mass housing.
		+	* PAS 2038 and older buildings.
	* PAS 2038:2021 Retrofitting non-domestic buildings for improved energy efficiency.		* PAS 2038:2021 Retrofitting non-domestic buildings for improved energy efficiency.
	* Retrofit coordinator.		* Retrofit coordinator.

Editor at 16:39, 27 August 2021

2021-08-27T16:39:10Z

← Older revision		Revision as of 16:39, 27 August 2021
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	The British Standards Institution, BSI, has recently published PAS 2035: 2019: Retrofitting Dwellings for Improved Energy Efficiency – Specification and Guidance. PAS describes a ‘publicly available specification’. While it is not officially a ‘standard’, it is a document that is likely to have a major effect on the way UK homes are retrofitted. It applies to homes of all ages and types and therefore includes traditional buildings.		The British Standards Institution, BSI, has recently published PAS 2035: 2019: Retrofitting Dwellings for Improved Energy Efficiency – Specification and Guidance. PAS describes a ‘publicly available specification’. While it is not officially a ‘standard’, it is a document that is likely to have a major effect on the way UK homes are retrofitted. It applies to homes of all ages and types and therefore includes traditional buildings.

−	The ~~devasting~~ effects of climate change are increasingly being recognised: a sharp reminder is the UK government calling a ‘climate change emergency’ in May 2019. With many statistics indicating that the homes of today will be around for a very long time (estimates vary but an EU briefing in 2014 reported that ‘at least’ two thirds of existing buildings will be around in 2050), there is a lot of emphasis on making existing buildings more energy efficient.	+	The devastating effects of climate change are increasingly being recognised: a sharp reminder is the UK government calling a ‘climate change emergency’ in May 2019. With many statistics indicating that the homes of today will be around for a very long time (estimates vary but an EU briefing in 2014 reported that ‘at least’ two thirds of existing buildings will be around in 2050), there is a lot of emphasis on making existing buildings more energy efficient.

	The fear, in particular for traditional buildings, is that we do not always know what we are doing and therefore frequently need to tackle the unintended consequences from what has been retrofitted. Overall, these have in some cases made retrofitted buildings less sustainable than they were previously, with common problems including mould, condensation and increased fire risks. Changing how we plan and implement retrofit is therefore essential and PAS 2035 aims to do that.		The fear, in particular for traditional buildings, is that we do not always know what we are doing and therefore frequently need to tackle the unintended consequences from what has been retrofitted. Overall, these have in some cases made retrofitted buildings less sustainable than they were previously, with common problems including mould, condensation and increased fire risks. Changing how we plan and implement retrofit is therefore essential and PAS 2035 aims to do that.
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	* National Retrofit Strategy NRS.		* National Retrofit Strategy NRS.
	* New energy retrofit concept: 'renovation trains' for mass housing.		* New energy retrofit concept: 'renovation trains' for mass housing.
		+	* PAS 2038:2021 Retrofitting non-domestic buildings for improved energy efficiency.
	* Retrofit coordinator.		* Retrofit coordinator.
	* Retrofit, refurbishment and the growth of connected HVAC technology.		* Retrofit, refurbishment and the growth of connected HVAC technology.

Editor at 16:15, 27 May 2021

2021-05-27T16:15:44Z

← Older revision		Revision as of 16:15, 27 May 2021
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	* How to deal with retrofit risks.		* How to deal with retrofit risks.
	* IHBC articles.		* IHBC articles.
		+	* National Retrofit Strategy NRS.
	* New energy retrofit concept: 'renovation trains' for mass housing.		* New energy retrofit concept: 'renovation trains' for mass housing.
	* Retrofit coordinator.		* Retrofit coordinator.
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	* TrustMark.		* TrustMark.

−	[[Category:~~Conservation~~]] [[Category:~~DCN_Commentary~~]] [[Category:~~DCN_Standard~~]] [[Category:~~Standards_/_measurements~~]]	+	[[Category:DCN_Commentary]] [[Category:DCN_Standard]] [[Category:Standards_/_measurements]] [[Category:Conservation]]

Designing Buildings at 08:09, 13 January 2021

2021-01-13T08:09:35Z

← Older revision		Revision as of 08:09, 13 January 2021
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	* TrustMark.		* TrustMark.

−	[[Category:Conservation]] [[Category:~~Standards_/_measurements~~]] [[Category:DCN_Standard]]	+	[[Category:Conservation]] [[Category:DCN_Commentary]] [[Category:DCN_Standard]] [[Category:Standards_/_measurements]]

Editor at 19:20, 4 August 2020

2020-08-04T19:20:39Z

← Older revision		Revision as of 19:20, 4 August 2020
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	* Retrofit.		* Retrofit.
	* The Institute of Historic Building Conservation.		* The Institute of Historic Building Conservation.
		+	* TrustMark.

−	[[Category:Conservation]] [[Category:Standards_/_measurements]]	+	[[Category:Conservation]] [[Category:Standards_/_measurements]] [[Category:DCN_Standard]]