Single glazing v double glazing - Revision history

Designing Buildings at 07:24, 2 March 2021

2021-03-02T07:24:28Z

← Older revision		Revision as of 07:24, 2 March 2021
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	* Window energy rating.		* Window energy rating.

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

Designing Buildings at 09:55, 19 March 2020

2020-03-19T09:55:13Z

Designing Buildings at 09:45, 19 March 2020

2020-03-19T09:45:02Z

← Older revision		Revision as of 09:45, 19 March 2020
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−	The term 'glazing' refers to the glass ~~component~~ of a building's façade or internal surfaces. Historically, windows were generally single glazed, consisting of just a single layer of glass, today there are many different options for glazing. A substantial amount of heat is lost through the window, and so double and triple glazed units have been developed to provide more insulation, improving the energy efficiency of a building.	+	The term 'glazing' refers to the glass components of a building's façade or internal surfaces. Historically, windows were generally single glazed, consisting of just a single layer of glass, today there are many different options for glazing. A substantial amount of heat is lost through the window, and so double and triple glazed units have been developed to provide more insulation, improving the energy efficiency of a building.

−	The building regulations in England and Wales require that new and replacement window units must meet certain energy efficiency requirements. Approved Document L of the building regulations classifies an external window as a 'controlled fitting', which refers to the whole unit including the frame. New and replacement windows in existing homes in England, Wales and Scotland must have a Window Energy Rating (WER) of at least band C or have a U-value of no more than 1.6 W/m²K. This is intended to reduce heat ~~loss~~, and so the requirement for heating, resulting in lower energy consumption and lower carbon emissions.	+	The building regulations in England and Wales require that new and replacement window units must meet certain energy efficiency requirements. Approved Document L of the building regulations classifies an external window as a 'controlled fitting', which refers to the whole unit including the frame. New and replacement windows in existing homes in England, Wales and Scotland must have a Window Energy Rating (WER) of at least band C or have a U-value of no more than 1.6 W/m²K. This is intended to reduce heat transfer, and so the requirement for heating or cooling, resulting in lower energy consumption and lower carbon emissions.

−	Single glazing comprises ~~off~~ one layer of glass, bedded into the window frame. Single glazing is ~~usually~~ fixed with linseed oil putty and secured with glazing nails into the frame. Glazing beads can further secure the glass and ~~is usually~~ screwed and glued to the frame. If the window frame is timber it must be painted to avoid water ingress. Typically, single glazing can achieve a U-value of around 4.5 W/m²K. The sound reduction achieved by single glazing (6 mm thick) is typically around 27 dB	+	Single glazing comprises one layer of glass, bedded into the window frame. Single glazing is sometimes fixed with linseed oil putty and secured with glazing nails into the frame. Glazing beads can further secure the glass and may be screwed and glued to the frame. If the window frame is timber it must be painted or otherwise treated to avoid water ingress. Typically, single glazing can achieve a U-value of around 4.5 W/m²K. The sound reduction achieved by single glazing (6 mm thick) is typically around 27 dB

−	Double glazing comprises two layers of glass separated by a spacer bar and a continuous hollow frame typically made of aluminium or a low heat-conductive material. The spacer bar is bonded to the panes using a primary and secondary seal which creates an airtight cavity, typically with 6-20 mm between the two layers of glass. ~~This~~ space is filled with air or with a gas such as argon, which improves the thermal properties of the window~~. Larger cavities may be provided to achieve greater sound reduction~~. Good double glazing can achieve a U-value of around 1.2 W/m²K. The sound reduction achieved by double glazing (100 mm air space) is around 42 dB	+	Double glazing comprises two layers of glass separated by a spacer bar and a continuous hollow frame typically made from aluminium or UPVC or some other low heat-conductive material such as timber. The spacer bar is bonded to the panes using a primary and secondary seal which creates an airtight cavity, typically with 6-20 mm between the two layers of glass. Larger cavities may be provided to achieve greater sound reduction. The space is filled with air or with a gas such as argon, which improves the thermal properties of the window. Good double glazing can achieve a U-value of around 1.2 W/m²K. The sound reduction achieved by double glazing (100 mm air space) is around 42 dB

	For more information see: Single glazing and Double glazing.		For more information see: Single glazing and Double glazing.

Editor2 at 17:20, 16 March 2020

2020-03-16T17:20:07Z

← Older revision		Revision as of 17:20, 16 March 2020
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	Double glazing thus provides benefits, such as improved thermal comfort and better acoustic performance and increased security as well as reduced solar gain in the summer and a reduction in the occurrence of condensation		Double glazing thus provides benefits, such as improved thermal comfort and better acoustic performance and increased security as well as reduced solar gain in the summer and a reduction in the occurrence of condensation

−	Single glazing might be beneficial in areas that are more tropical and hot and do not require heat retention. Single glazed windows also only require the glass panes to be replaced if there is damage to the glazing, unlike double glazing where the whole frame will need to be replaced ~~if there is any damage to the panes~~.	+	Single glazing might be beneficial in areas that are more tropical and hot and do not require heat retention. Single glazed windows also only require the glass panes to be replaced if there is damage to the glazing, unlike double glazing where the whole frame will need to be replaced.

	A more economical option to replace single glazed windows is to instal secondary glazing. Secondary glazing involves the installation of an additional pane of glass and frame to existing windows. This can be used as an alternative to double glazing which involves the removal and replacement of existing windows. It can be used to improve sound insulation and to reduce heat loss and draughts through windows.		A more economical option to replace single glazed windows is to instal secondary glazing. Secondary glazing involves the installation of an additional pane of glass and frame to existing windows. This can be used as an alternative to double glazing which involves the removal and replacement of existing windows. It can be used to improve sound insulation and to reduce heat loss and draughts through windows.

Editor2 at 15:54, 16 March 2020

2020-03-16T15:54:02Z

← Older revision		Revision as of 15:54, 16 March 2020
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	* Windows that require noise reduction, draught reduction.		* Windows that require noise reduction, draught reduction.

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

	* Building fabric.		* Building fabric.

Editor2: Created page with "The term 'glazing' refers to the glass component of a building's façade or internal surfaces. Historically, windows were generally single glazed, consisting of just a single lay..."

2020-03-16T15:20:50Z

Created page with "The term 'glazing' refers to the glass component of a building's façade or internal surfaces. Historically, windows were generally single glazed, consisting of just a single lay..."

New page

The term 'glazing' refers to the glass component of a building's façade or internal surfaces. Historically, windows were generally single glazed, consisting of just a single layer of glass, today there are many different options for glazing. A substantial amount of heat is lost through the window, and so double and triple glazed units have been developed to provide more insulation, improving the energy efficiency of a building.

The building regulations in England and Wales require that new and replacement window units must meet certain energy efficiency requirements. Approved Document L of the building regulations classifies an external window as a 'controlled fitting', which refers to the whole unit including the frame. New and replacement windows in existing homes in England, Wales and Scotland must have a Window Energy Rating (WER) of at least band C or have a U-value of no more than 1.6 W/m²K. This is intended to reduce heat loss, and so the requirement for heating, resulting in lower energy consumption and lower carbon emissions.

Single glazing comprises off one layer of glass, bedded into the window frame. Single glazing is usually fixed with linseed oil putty and secured with glazing nails into the frame. Glazing beads can further secure the glass and is usually screwed and glued to the frame. If the window frame is timber it must be painted to avoid water ingress. Typically, single glazing can achieve a U-value of around 4.5 W/m²K. The sound reduction achieved by single glazing (6 mm thick) is typically around 27 dB

Double glazing comprises two layers of glass separated by a spacer bar and a continuous hollow frame typically made of aluminium or a low heat-conductive material. The spacer bar is bonded to the panes using a primary and secondary seal which creates an airtight cavity, typically with 6-20 mm between the two layers of glass. This space is filled with air or with a gas such as argon, which improves the thermal properties of the window. Larger cavities may be provided to achieve greater sound reduction. Good double glazing can achieve a U-value of around 1.2 W/m²K. The sound reduction achieved by double glazing (100 mm air space) is around 42 dB

For more information see: Single glazing and Double glazing.

Double glazing thus provides benefits, such as improved thermal comfort and better acoustic performance and increased security as well as reduced solar gain in the summer and a reduction in the occurrence of condensation

Single glazing might be beneficial in areas that are more tropical and hot and do not require heat retention. Single glazed windows also only require the glass panes to be replaced if there is damage to the glazing, unlike double glazing where the whole frame will need to be replaced if there is any damage to the panes.

A more economical option to replace single glazed windows is to instal secondary glazing. Secondary glazing involves the installation of an additional pane of glass and frame to existing windows. This can be used as an alternative to double glazing which involves the removal and replacement of existing windows. It can be used to improve sound insulation and to reduce heat loss and draughts through windows.

Secondary glazing is considered most suitable for:

* Listed buildings, period properties and heritage/conservation areas.
* Areas where there is traffic noise (such as hotels on main roads).
* Properties where it may be uneconomical to install double glazing.
* Properties where it would be difficult to modify existing external windows (such as single glazed timber sash windows).
* Windows that require noise reduction, draught reduction.

Related Articles on Designing Buildings Wiki

* Building fabric.
* Choosing the correct glazed facade heating system.
* Domestic windows.
* Double glazing.
* Double glazing v triple glazing.
* Emissivity.
* Glass.
* Glazing.
* Heat transfer.
* Preventing overheating.
* Security glazing.
* Single glazing
* Triple glazing.
* Window.
* Window energy rating.

[[Category:Products_/_components]]

← Older revision		Revision as of 09:55, 19 March 2020
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	For more information see: Single glazing and Double glazing.		For more information see: Single glazing and Double glazing.

−	Double glazing ~~thus~~ provides benefits, such as improved thermal comfort and better acoustic performance and increased security as well as reduced solar gain in the summer and a reduction in the occurrence of condensation	+	Double glazing provides benefits, such as improved thermal comfort and better acoustic performance and increased security as well as reduced solar gain in the summer and a reduction in the occurrence of condensation. However, it is more expensive, heavier and may be more difficult to instal.

−	Single glazing might be beneficial in ~~areas~~ that ~~are more tropical and hot and~~ do not require heat retention~~. Single glazed windows also only require the glass panes to be replaced if there is damage to the glazing~~, ~~unlike double glazing where the whole frame will need to be replaced~~.	+	Single glazing might be beneficial in climates or building types that do not require heat retention, such as storage facilities.

−	A more economical option to ~~replace~~ single glazed windows is to instal secondary glazing. Secondary glazing involves the installation of an additional pane of glass and frame to existing windows. This can be used ~~as an alternative to double glazing which involves the removal and replacement of existing windows. It can~~ be used to improve sound insulation and to reduce heat loss and draughts through windows.	+	A more economical option to replacing single glazed windows can be to instal secondary glazing. Secondary glazing involves the installation of an additional pane or panes of glass and a internal frame to existing windows. This can be used be used to improve sound insulation and to reduce heat loss and draughts through windows, or in situations where it is not permitted to change existing glazing such as listed buildings.

−	Secondary glazing ~~is considered most~~ suitable for:	+	Secondary glazing may be suitable for:

	* Listed buildings, period properties and heritage/conservation areas.		* Listed buildings, period properties and heritage/conservation areas.
	* Areas where there is traffic noise (such as hotels on main roads).		* Areas where there is traffic noise (such as hotels on main roads).
−	* Properties where it may be uneconomical to ~~install~~ double glazing.	+	* Properties where it may be uneconomical to instal double glazing.
	* Properties where it would be difficult to modify existing external windows (such as single glazed timber sash windows).		* Properties where it would be difficult to modify existing external windows (such as single glazed timber sash windows).
	* Windows that require noise reduction, draught reduction.		* Windows that require noise reduction, draught reduction.
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	* Window energy rating.		* Window energy rating.

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