Solid wall insulation - Revision history

Editor at 09:58, 13 September 2021

2021-09-13T09:58:27Z

← Older revision		Revision as of 09:58, 13 September 2021
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	* Designing out unintended consequences when applying solid wall insulation FB 79.		* Designing out unintended consequences when applying solid wall insulation FB 79.
	* Floor insulation.		* Floor insulation.
		+	* IHBC responds to Energy Company Obligation ECO4 and PAS 2035.
	* Insulation specification.		* Insulation specification.
	* Insulation.		* Insulation.

Designing Buildings at 09:44, 2 October 2020

2020-10-02T09:44:00Z

← Older revision		Revision as of 09:44, 2 October 2020
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	* [http://www.uswitch.com/insulation/guides/wall-insulation-types/ uswitch], wall insulation types.		* [http://www.uswitch.com/insulation/guides/wall-insulation-types/ uswitch], wall insulation types.

−	[[Category:~~Sustainability~~]] [[Category:~~Construction_techniques~~]] [[Category:~~Products_/_components~~]] [[Category:~~DCN_Product_Knowledge~~]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Sustainability]] [[Category:Construction_techniques]] [[Category:Products_/_components]]

Designing Buildings at 11:37, 15 July 2020

2020-07-15T11:37:44Z

← Older revision		Revision as of 11:37, 15 July 2020
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	You can read about the report [[Solid_wall_insulation_credibility\|here]].		You can read about the report [[Solid_wall_insulation_credibility\|here]].

−	~~= Find out more =~~	+	For further guidance, see: [https://historicengland.org.uk/images-books/publications/eehb-insulating-solid-walls/ https://historicengland.org.uk/images-books/publications/eehb-insulating-solid-walls/]

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

	* BRE and Willmott Dixon project to retrofit of a 1920s semi-detached house.		* BRE and Willmott Dixon project to retrofit of a 1920s semi-detached house.
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	* [http://www.uswitch.com/insulation/guides/wall-insulation-types/ uswitch], wall insulation types.		* [http://www.uswitch.com/insulation/guides/wall-insulation-types/ uswitch], wall insulation types.

−	[[Category:Sustainability]] [[Category:Construction_techniques]] [[Category:Products_/_components]]	+	[[Category:Sustainability]] [[Category:Construction_techniques]] [[Category:Products_/_components]] [[Category:DCN_Product_Knowledge]]

Designing Buildings at 11:07, 25 November 2018

2018-11-25T11:07:34Z

← Older revision		Revision as of 11:07, 25 November 2018
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	* Insulation specification.		* Insulation specification.
	* Insulation.		* Insulation.
		+	* Reducing thermal bridging at junctions when designing and installing solid wall insulation FB 61.
	* Roof insulation.		* Roof insulation.
	* Solid Wall Insulation: Unlocking demand and driving up standards.		* Solid Wall Insulation: Unlocking demand and driving up standards.
−	* Sustainability.
−	* Temperature.
−	* Thermal comfort.
	* Types of insulation.		* Types of insulation.
	* Understanding the performance of solid walls.		* Understanding the performance of solid walls.

62.60.23.206 at 12:40, 3 July 2018

2018-07-03T12:40:10Z

← Older revision		Revision as of 12:40, 3 July 2018
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	Typically the U-values (a measure thermal conductance) of walls are:		Typically the U-values (a measure thermal conductance) of walls are:

−	* Solid brick wall 2.0 W/m2K.	+	* Solid brick wall 1.7 W/m2K.
	* Cavity wall with no insulation 1.5 W/m2K.		* Cavity wall with no insulation 1.5 W/m2K.
	* Insulated wall 0.3 W/m2K.		* Insulated wall 0.3 W/m2K.

Designing Buildings at 13:52, 4 May 2018

2018-05-04T13:52:40Z

← Older revision		Revision as of 13:52, 4 May 2018
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	* BRE and Willmott Dixon project to retrofit of a 1920s semi-detached house.		* BRE and Willmott Dixon project to retrofit of a 1920s semi-detached house.
		+	* BREEAM Insulation.
	* Cavity wall insulation.		* Cavity wall insulation.
	* Cold bridge.		* Cold bridge.
−	* Condensation.
	* Defects in brickwork.		* Defects in brickwork.
	* Designing out unintended consequences when applying solid wall insulation FB 79.		* Designing out unintended consequences when applying solid wall insulation FB 79.
−	* Dry lining.
	* Floor insulation.		* Floor insulation.
−	* Green deal.
	* Insulation specification.		* Insulation specification.
	* Insulation.		* Insulation.

Editor at 15:09, 23 January 2018

2018-01-23T15:09:50Z

← Older revision		Revision as of 15:09, 23 January 2018
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	= Introduction =		= Introduction =

−	It is only relatively recently that the external walls of buildings have been insulated, and only since the ~~1920’s~~ or ~~30’s~~ that they have even included cavities between the inner and outer layers that could accept insulation. Before this, walls were largely uninsulated and solid. Buildings built in this way they tend to lose more heat from the inside to the outside and so can be cold, can suffer condensation and can be expensive to heat.	+	It is only relatively recently that the external walls of buildings have been insulated, and only since the 1920s or 30s that they have even included cavities between the inner and outer layers that could accept insulation. Before this, walls were largely uninsulated and solid. Buildings built in this way they tend to lose more heat from the inside to the outside and so can be cold, can suffer condensation and can be expensive to heat.

	Typically the U-values (a measure thermal conductance) of walls are:		Typically the U-values (a measure thermal conductance) of walls are:
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	= Internal insulation =		= Internal insulation =

−	External walls can be insulated by fixing insulation boards to their internal surface, or by building an internal stud-wall adjacent to their surface and then insulating the cavity between the stud wall and the external wall. Internal insulation is generally less expensive than external insulation, although it may still take more than 10 years to recover the cost in terms of reductions in energy bills (~~ref~~ [http://www.uswitch.com/insulation/guides/wall-insulation-types/ uswitch]).	+	External walls can be insulated by fixing insulation boards to their internal surface, or by building an internal stud-wall adjacent to their surface and then insulating the cavity between the stud wall and the external wall. Internal insulation is generally less expensive than external insulation, although it may still take more than 10 years to recover the cost in terms of reductions in energy bills (Ref. [http://www.uswitch.com/insulation/guides/wall-insulation-types/ uswitch]).

−	Installing internal insulation can be very disruptive, involving the replacement of skirting boards, door frames, electrical fittings, shelves, radiators, pipe work, coving and cornices. It also reduces the habitable space within the building. Metal or wooden stud wall constructions require the greatest depth and so result in the greatest loss of habitable space. For example, if the stud and insulation construction is ~~120mm~~ thick, in a 3m x 3m corner room this would result in a loss of habitable floor area of more than 7%. Insulation boards are thinner, but more difficult to attach fixtures and fittings to.	+	Installing internal insulation can be very disruptive, involving the replacement of skirting boards, door frames, electrical fittings, shelves, radiators, pipe work, coving and cornices. It also reduces the habitable space within the building. Metal or wooden stud wall constructions require the greatest depth and so result in the greatest loss of habitable space. For example, if the stud and insulation construction is 120 mm thick, in a 3 m x 3 m corner room this would result in a loss of habitable floor area of more than 7%. Insulation boards are thinner, but more difficult to attach fixtures and fittings to.

−	Internal insulation can conceal damp problems, and so these must be dealt with before the insulation is fitted. In addition, where there are any gaps in the insulation, condensation problems can occur (see ~~cold~~ bridge). This means that particular attention must be given to the standard of workmanship, and care taken with joints and to insulate areas around windows and where internal walls meet external walls.	+	Internal insulation can conceal damp problems, and so these must be dealt with before the insulation is fitted. In addition, where there are any gaps in the insulation, condensation problems can occur (see Cold bridge). This means that particular attention must be given to the standard of workmanship, and care taken with joints and to insulate areas around windows and where internal walls meet external walls.

	Some condensation issues can be mitigated by adding a vapour membrane to the inner surface of the insulation to prevent damp air reaching the cold external wall, however, care must then be taken with jointing panels (if the membrane is integral to the panel) and if holes are subsequently made in the membrane, these must be re-sealed.		Some condensation issues can be mitigated by adding a vapour membrane to the inner surface of the insulation to prevent damp air reaching the cold external wall, however, care must then be taken with jointing panels (if the membrane is integral to the panel) and if holes are subsequently made in the membrane, these must be re-sealed.
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	The external surfaces of walls can be insulated by fixing an insulating material to them and then finishing the insulation with render or with cladding materials.		The external surfaces of walls can be insulated by fixing an insulating material to them and then finishing the insulation with render or with cladding materials.

−	External insulation is generally less disruptive than internal insulation and it does not reduce the habitable area. It can also improve durability, weatherproofing and acoustic insulation and can reduce condensation problems. However, it may need planning permission, and tends to be more expensive. The cost of external insulation may take more than twenty years to recover through savings in energy bills (~~ref~~ [http://www.uswitch.com/insulation/guides/wall-insulation-types/ uswitch]).	+	External insulation is generally less disruptive than internal insulation and it does not reduce the habitable area. It can also improve durability, weatherproofing and acoustic insulation and can reduce condensation problems. However, it may need planning permission, and tends to be more expensive. The cost of external insulation may take more than twenty years to recover through savings in energy bills (Ref. [http://www.uswitch.com/insulation/guides/wall-insulation-types/ uswitch]).

	As with internal insulation, external insulation may require repositioning of pipework and other fittings, as well as window sills and sometimes even roof overhangs. External passageways or driveways may be made narrower, and there is the possibility of elements of the building protruding beyond the boundaries of the site.		As with internal insulation, external insulation may require repositioning of pipework and other fittings, as well as window sills and sometimes even roof overhangs. External passageways or driveways may be made narrower, and there is the possibility of elements of the building protruding beyond the boundaries of the site.
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	* Temperature.		* Temperature.
	* Thermal comfort.		* Thermal comfort.
		+	* Types of insulation.
	* Understanding the performance of solid walls.		* Understanding the performance of solid walls.
	* U-value.		* U-value.

Designing Buildings at 13:52, 8 September 2017

2017-09-08T13:52:54Z

← Older revision		Revision as of 13:52, 8 September 2017
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	* Temperature.		* Temperature.
	* Thermal comfort.		* Thermal comfort.
		+	* Understanding the performance of solid walls.
	* U-value.		* U-value.
	* Wall insulation and moisture risk.		* Wall insulation and moisture risk.

Designing Buildings at 10:02, 23 May 2017

2017-05-23T10:02:43Z

← Older revision		Revision as of 10:02, 23 May 2017
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	* Thermal comfort.		* Thermal comfort.
	* U-value.		* U-value.
		+	* Wall insulation and moisture risk.

	=== External references ===		=== External references ===

Designing Buildings at 08:10, 7 May 2017

2017-05-07T08:10:04Z

← Older revision		Revision as of 08:10, 7 May 2017
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	* Condensation.		* Condensation.
	* Defects in brickwork.		* Defects in brickwork.
		+	* Designing out unintended consequences when applying solid wall insulation FB 79.
	* Dry lining.		* Dry lining.
	* Floor insulation.		* Floor insulation.