Cold roof - Revision history

Editor at 15:27, 20 February 2023

2023-02-20T15:27:11Z

← Older revision		Revision as of 15:27, 20 February 2023
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	Particular care must be taken when installing loft insulation, as this can convert a pitched roof from a warm to a cold roof. Ventilation must then be provided to prevent the accumulation of moist air and so condensation, as this can cause the roof structure to deteriorate and ultimately to fail.		Particular care must be taken when installing loft insulation, as this can convert a pitched roof from a warm to a cold roof. Ventilation must then be provided to prevent the accumulation of moist air and so condensation, as this can cause the roof structure to deteriorate and ultimately to fail.

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

	* Blue roof.		* Blue roof.

Designing Buildings at 07:32, 22 November 2020

2020-11-22T07:32:09Z

← Older revision		Revision as of 07:32, 22 November 2020
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−	A cold roof is roof in which the thermal insulation layer is located immediately above the ceiling joists meaning that everything above the insulation, such as the rafters, and any roof space, will be colder than the living space below it.	+	A cold roof is roof in which the thermal insulation layer is located immediately above or between the ceiling joists meaning that everything above the insulation, such as the rafters, and any roof space, will be colder than the living space below it.

	When warm, damp air permeates up through the ceiling and reaches the cold roof space, the change in temperature can result in condensation forming. Adequate roof space ventilation must be provided therefore to remove this air. This requirement, and the need for preventative measures to tackle cold bridging, means that warm roofs can be preferable.		When warm, damp air permeates up through the ceiling and reaches the cold roof space, the change in temperature can result in condensation forming. Adequate roof space ventilation must be provided therefore to remove this air. This requirement, and the need for preventative measures to tackle cold bridging, means that warm roofs can be preferable.
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	Particular care must be taken when installing loft insulation, as this can convert a pitched roof from a warm to a cold roof. Ventilation must then be provided to prevent the accumulation of moist air and so condensation, as this can cause the roof structure to deteriorate and ultimately to fail.		Particular care must be taken when installing loft insulation, as this can convert a pitched roof from a warm to a cold roof. Ventilation must then be provided to prevent the accumulation of moist air and so condensation, as this can cause the roof structure to deteriorate and ultimately to fail.

−	~~= Find out more =~~	+	= Related articles on Designing Buildings Wiki =
−		+
−	=== Related articles on Designing Buildings Wiki ===	+

	* Blue roof.		* Blue roof.

134.225.31.205 at 18:23, 21 November 2020

2020-11-21T18:23:05Z

← Older revision		Revision as of 18:23, 21 November 2020
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−	A cold roof is roof in which the thermal insulation layer is located ~~between~~ the ceiling joists meaning that everything above the insulation, such as the rafters, and any roof space, will be colder than the living space below it.	+	A cold roof is roof in which the thermal insulation layer is located immediately above the ceiling joists meaning that everything above the insulation, such as the rafters, and any roof space, will be colder than the living space below it.

	When warm, damp air permeates up through the ceiling and reaches the cold roof space, the change in temperature can result in condensation forming. Adequate roof space ventilation must be provided therefore to remove this air. This requirement, and the need for preventative measures to tackle cold bridging, means that warm roofs can be preferable.		When warm, damp air permeates up through the ceiling and reaches the cold roof space, the change in temperature can result in condensation forming. Adequate roof space ventilation must be provided therefore to remove this air. This requirement, and the need for preventative measures to tackle cold bridging, means that warm roofs can be preferable.

Designing Buildings at 09:43, 2 October 2020

2020-10-02T09:43:16Z

← Older revision		Revision as of 09:43, 2 October 2020
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	* Warm roof.		* Warm roof.

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

Designing Buildings: Reverted edits by 86.150.64.10 (talk) to last revision by Designing Buildings

2019-03-20T07:26:49Z

Reverted edits by 86.150.64.10 (talk) to last revision by Designing Buildings

← Older revision		Revision as of 07:26, 20 March 2019
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	* Warm roof.		* Warm roof.

−	[[Category:~~Articles_needing_more_work~~]] [[Category:~~Construction_techniques~~]] [[Category:~~Products_/_components~~]]	+	[[Category:Construction_techniques]] [[Category:Products_/_components]] [[Category:DCN_Product_Knowledge]]

86.150.64.10 at 18:28, 19 March 2019

2019-03-19T18:28:00Z

← Older revision		Revision as of 18:28, 19 March 2019
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	When warm, damp air permeates up through the ceiling and reaches the cold roof space, the change in temperature can result in condensation forming. Adequate roof space ventilation must be provided therefore to remove this air. This requirement, and the need for preventative measures to tackle cold bridging, means that warm roofs can be preferable.		When warm, damp air permeates up through the ceiling and reaches the cold roof space, the change in temperature can result in condensation forming. Adequate roof space ventilation must be provided therefore to remove this air. This requirement, and the need for preventative measures to tackle cold bridging, means that warm roofs can be preferable.

−	A warm roof is one in which the insulation layer is laid on ~~your mom~~ top of roof structure (or above the loft or attic space in the case of pitched roofs) so that the roof structure or roof space is closer to the inside temperature and so the risk of condensation is reduced.	+	A warm roof is one in which the insulation layer is laid on top of roof structure (or above the loft or attic space in the case of pitched roofs) so that the roof structure or roof space is closer to the inside temperature and so the risk of condensation is reduced.

	Particular care must be taken when installing loft insulation, as this can convert a pitched roof from a warm to a cold roof. Ventilation must then be provided to prevent the accumulation of moist air and so condensation, as this can cause the roof structure to deteriorate and ultimately to fail.		Particular care must be taken when installing loft insulation, as this can convert a pitched roof from a warm to a cold roof. Ventilation must then be provided to prevent the accumulation of moist air and so condensation, as this can cause the roof structure to deteriorate and ultimately to fail.

86.150.64.10 at 18:27, 19 March 2019

2019-03-19T18:27:40Z

← Older revision		Revision as of 18:27, 19 March 2019
Line 3:		Line 3:
	When warm, damp air permeates up through the ceiling and reaches the cold roof space, the change in temperature can result in condensation forming. Adequate roof space ventilation must be provided therefore to remove this air. This requirement, and the need for preventative measures to tackle cold bridging, means that warm roofs can be preferable.		When warm, damp air permeates up through the ceiling and reaches the cold roof space, the change in temperature can result in condensation forming. Adequate roof space ventilation must be provided therefore to remove this air. This requirement, and the need for preventative measures to tackle cold bridging, means that warm roofs can be preferable.

−	A warm roof is one in which the insulation layer is laid on top of roof structure (or above the loft or attic space in the case of pitched roofs) so that the roof structure or roof space is closer to the inside temperature and so the risk of condensation is reduced.	+	A warm roof is one in which the insulation layer is laid on your mom top of roof structure (or above the loft or attic space in the case of pitched roofs) so that the roof structure or roof space is closer to the inside temperature and so the risk of condensation is reduced.

	Particular care must be taken when installing loft insulation, as this can convert a pitched roof from a warm to a cold roof. Ventilation must then be provided to prevent the accumulation of moist air and so condensation, as this can cause the roof structure to deteriorate and ultimately to fail.		Particular care must be taken when installing loft insulation, as this can convert a pitched roof from a warm to a cold roof. Ventilation must then be provided to prevent the accumulation of moist air and so condensation, as this can cause the roof structure to deteriorate and ultimately to fail.
Line 23:		Line 23:
	* Warm roof.		* Warm roof.

−	[[Category:Construction_techniques]] [[Category:Products_/_components]]	+	[[Category:Articles_needing_more_work]] [[Category:Construction_techniques]] [[Category:Products_/_components]]

Designing Buildings at 13:21, 21 November 2017

2017-11-21T13:21:16Z

← Older revision		Revision as of 13:21, 21 November 2017
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−	A cold roof is ~~where~~ the thermal insulation layer is located between the ceiling joists meaning that everything above the insulation, such as the rafters, and any roof space will be colder than the living space below it.	+	A cold roof is roof in which the thermal insulation layer is located between the ceiling joists meaning that everything above the insulation, such as the rafters, and any roof space, will be colder than the living space below it.

	When warm, damp air permeates up through the ceiling and reaches the cold roof space, the change in temperature can result in condensation forming. Adequate roof space ventilation must be provided therefore to remove this air. This requirement, and the need for preventative measures to tackle cold bridging, means that warm roofs can be preferable.		When warm, damp air permeates up through the ceiling and reaches the cold roof space, the change in temperature can result in condensation forming. Adequate roof space ventilation must be provided therefore to remove this air. This requirement, and the need for preventative measures to tackle cold bridging, means that warm roofs can be preferable.

−	A 'warm roof' is one in which the insulation layer is laid on top of roof structure (or above the loft or attic space in the case of pitched roofs) so that the roof structure or roof space is closer to the inside temperature and so the risk of condensation is reduced.	+	A warm roof is one in which the insulation layer is laid on top of roof structure (or above the loft or attic space in the case of pitched roofs) so that the roof structure or roof space is closer to the inside temperature and so the risk of condensation is reduced.

	Particular care must be taken when installing loft insulation, as this can convert a pitched roof from a warm to a cold roof. Ventilation must then be provided to prevent the accumulation of moist air and so condensation, as this can cause the roof structure to deteriorate and ultimately to fail.		Particular care must be taken when installing loft insulation, as this can convert a pitched roof from a warm to a cold roof. Ventilation must then be provided to prevent the accumulation of moist air and so condensation, as this can cause the roof structure to deteriorate and ultimately to fail.

Designing Buildings at 13:19, 21 November 2017

2017-11-21T13:19:53Z

← Older revision		Revision as of 13:19, 21 November 2017
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−	~~When designing a timber flat~~ roof ~~construction, it~~ is ~~important that~~ the ~~designer ensures~~ the ~~appropriate provision of~~ insulation ~~to control both condensation and heat loss through~~ the roof ~~construction~~.	+	A cold roof is where the thermal insulation layer is located between the ceiling joists meaning that everything above the insulation, such as the rafters, and any roof space will be colder than the living space below it.

−	~~A cold roof is where the thermal insulation layer is located between~~ the ceiling ~~joists meaning that everything above~~ the ~~insulation~~, ~~such as~~ the ~~rafters, will~~ be ~~colder than~~ the ~~living space below it~~.	+	When warm, damp air permeates up through the ceiling and reaches the cold roof space, the change in temperature can result in condensation forming. Adequate roof space ventilation must be provided therefore to remove this air. This requirement, and the need for preventative measures to tackle cold bridging, means that warm roofs can be preferable.

−	~~When~~ warm~~, damp air permeates up through a ceiling and reaches~~ the ~~cold~~ roof ~~space,~~ the ~~change~~ in ~~temperature can result in interstitial condensation forming within~~ the ~~construction. Adequate~~ roof space ~~ventilation must be provided between~~ the ~~insulation layer~~ and the ~~underside~~ of ~~the roof deck to remove this air~~.	+	A 'warm roof' is one in which the insulation layer is laid on top of roof structure (or above the loft or attic space in the case of pitched roofs) so that the roof structure or roof space is closer to the inside temperature and so the risk of condensation is reduced.

−	~~A cold roof may~~ be ~~an easy option because of it being relatively low impact~~, ~~however, it is generally isn’t recommended for new flat~~ roof ~~applications. This is because of the requirement for roof void ventilation and preventative measures~~ to ~~tackle~~ cold ~~bridging~~.	+	Particular care must be taken when installing loft insulation, as this can convert a pitched roof from a warm to a cold roof. Ventilation must then be provided to prevent the accumulation of moist air and so condensation, as this can cause the roof structure to deteriorate and ultimately to fail.
−		+
−	~~It can also prove time-consuming and overly complex to insulate an existing flat roof, since the roof surface will have to~~ be ~~taken up,~~ to ~~enable~~ the ~~laying~~ of ~~the insulation,~~ and ~~then replaced. Instead~~, ~~it is recommended that new insulation be incorporated to~~ the ~~roofing system, or the design be converted~~ to ~~a warm roof~~.	+

	= Find out more =		= Find out more =

Editor at 15:57, 12 November 2017

2017-11-12T15:57:20Z

← Older revision		Revision as of 15:57, 12 November 2017
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	=== Related articles on Designing Buildings Wiki ===		=== Related articles on Designing Buildings Wiki ===

		+	* Blue roof.
	* Condensation in buildings.		* Condensation in buildings.
	* Domestic roofs.		* Domestic roofs.