Pressure equalized rainscreen systems - Revision history

Editor at 07:53, 11 September 2024

2024-09-11T07:53:34Z

← Older revision		Revision as of 07:53, 11 September 2024
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	Pressure equalized rainscreen (PER) systems are a design that aims to achieve equal pressure on the exterior of a cladding system and to the interior air cavity beneath it, thus no pressure gains or losses mean no route for rain to enter the system. The concept of pressure equalization has been proven in many applications and continues to be widely used throughout the industry. Generally tested in the US to AAMA 508 standards, in the UK fire class tests will likely be according to Euroclass A1 or A2, A or B as the lower rating.		Pressure equalized rainscreen (PER) systems are a design that aims to achieve equal pressure on the exterior of a cladding system and to the interior air cavity beneath it, thus no pressure gains or losses mean no route for rain to enter the system. The concept of pressure equalization has been proven in many applications and continues to be widely used throughout the industry. Generally tested in the US to AAMA 508 standards, in the UK fire class tests will likely be according to Euroclass A1 or A2, A or B as the lower rating.
		+
		+	The Centre for Window and Cladding Technology (CWCT) defines a rainscreen cladding system as '...a wall comprising an outer skin of panels and an airtight insulated backing wall separated by a ventilated cavity. Some water may penetrate into the cavity but the rainscreen is intended to provide protection from direct rain'.

	[https://metalconstruction.org/ The Metal Constuction Association], [https://metalconstruction.org/index.php/online-education/mcm-panel-system-definitions Technical Bulletin MCM Panel System Definitions, dated March 2018] describes the [https://www.designingbuildings.co.uk/wiki/Design design] and [https://www.designingbuildings.co.uk/wiki/Function functions] of MCM Pressure equalized rainscreen (PER) systems as thus:		[https://metalconstruction.org/ The Metal Constuction Association], [https://metalconstruction.org/index.php/online-education/mcm-panel-system-definitions Technical Bulletin MCM Panel System Definitions, dated March 2018] describes the [https://www.designingbuildings.co.uk/wiki/Design design] and [https://www.designingbuildings.co.uk/wiki/Function functions] of MCM Pressure equalized rainscreen (PER) systems as thus:

Editor at 13:21, 10 September 2024

2024-09-10T13:21:11Z

← Older revision		Revision as of 13:21, 10 September 2024
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	"Equalization is achieved by venting the interior airspace in precisely the correct locations and amounts. This venting allows air to quickly pass through the cladding joinery allowing the interior air space to quickly equalize with the exterior pressure while controlling water infiltration. However, this pressure equalization also means that the solid backing (such as gypsum board) must be properly designed and constructed behind the panel system. The air/water barrier becomes the primary air barrier for the building. In addition to the air/water barrier, the interior air space behind the panel system is typically divided into sealed and separate compartments. This prevents the air within the air space from migrating between higher and lower pressure zones. One method to create movement of air in differing pressure zones is the use of vertical and/or horizontal sealant as shown in Figure 6, however the design of adequate compartmentalization is beyond the scope of AAMA 508. When properly designed and installed, acceptable levels of pressure equalization can be proven in laboratory test results to nationally recognized standards."		"Equalization is achieved by venting the interior airspace in precisely the correct locations and amounts. This venting allows air to quickly pass through the cladding joinery allowing the interior air space to quickly equalize with the exterior pressure while controlling water infiltration. However, this pressure equalization also means that the solid backing (such as gypsum board) must be properly designed and constructed behind the panel system. The air/water barrier becomes the primary air barrier for the building. In addition to the air/water barrier, the interior air space behind the panel system is typically divided into sealed and separate compartments. This prevents the air within the air space from migrating between higher and lower pressure zones. One method to create movement of air in differing pressure zones is the use of vertical and/or horizontal sealant as shown in Figure 6, however the design of adequate compartmentalization is beyond the scope of AAMA 508. When properly designed and installed, acceptable levels of pressure equalization can be proven in laboratory test results to nationally recognized standards."

−	[[Category:~~Articles_needing_more_work~~]]	+	= Related articles on Designing Buildings =
		+
		+	* Building fabric.
		+	* Cladding.
		+	* Composites.
		+	* Copper.
		+	* Crinkly tin.
		+	* Curtain wall systems.
		+	* Drained and back ventilated rainscreen systems.
		+	* Dry Seals for metal composite material systems.
		+	* Glazing.
		+	* Metal.
		+	* Metal composite material panel systems MCM and MCP.
		+	* Metal profile cladding.
		+	* Metal roofing.
		+	* Modernising composite materials regulations.
		+	* Rainscreen.
		+	* Sandwich panel.
		+	* Shingle roofing.
		+	* Wall types.
		+	* Weatherboarding.
		+	* Wet Seals for metal composite material systems.
		+	* Zinc
		+
		+	[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:Definitions]] [[Category:Publications_/_reports]] [[Category:Products_/_components]]

Editor at 09:59, 10 September 2024

2024-09-10T09:59:33Z

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−	~~Wet Seal System~~ are ~~one~~ of the ~~original MCM installation systems~~, ~~along with dry seals, used~~ for ~~around 40 years in~~ the US and ~~still~~ widely used ~~today~~. ~~Also known as a “single line barrier wall” or “fully-sealed wall”, wet seal systems are installed with a joint located between adjacent panels that is fully sealed with exposed sealant. Tested~~ in the US to AAMA ~~501 & 501.1~~ standards, in the UK fire class tests will likely be according to Euroclass A1 or A2, A or B as the lower rating.	+	Pressure equalized rainscreen (PER) systems are a design that aims to achieve equal pressure on the exterior of a cladding system and to the interior air cavity beneath it, thus no pressure gains or losses mean no route for rain to enter the system. The concept of pressure equalization has been proven in many applications and continues to be widely used throughout the industry. Generally tested in the US to AAMA 508 standards, in the UK fire class tests will likely be according to Euroclass A1 or A2, A or B as the lower rating.

−	[https://metalconstruction.org/ The Metal Constuction Association], [https://metalconstruction.org/index.php/online-education/mcm-panel-system-definitions Technical Bulletin MCM Panel System Definitions, dated March 2018] describes the [https://www.designingbuildings.co.uk/wiki/Design design] and [https://www.designingbuildings.co.uk/wiki/Function functions] of MCM ~~Wet Seal [https://www.designingbuildings.co.uk/wiki/Systems Systems]~~ as thus:	+	[https://metalconstruction.org/ The Metal Constuction Association], [https://metalconstruction.org/index.php/online-education/mcm-panel-system-definitions Technical Bulletin MCM Panel System Definitions, dated March 2018] describes the [https://www.designingbuildings.co.uk/wiki/Design design] and [https://www.designingbuildings.co.uk/wiki/Function functions] of MCM Pressure equalized rainscreen (PER) systems as thus:

−	A pressure equalized rainscreen (PER) system design is based on the concept of having equal pressure on the exterior of the cladding and the interior air cavity. With no pressure gain/loss there is no method for the rain to enter into the system. The concept of pressure equalization has been proven in many applications and is widely used throughout the industry. Equalization is achieved by venting the interior airspace in precisely the correct locations and amounts. This venting allows air to quickly pass through the cladding joinery allowing the interior air space to quickly equalize with the exterior pressure while controlling water infiltration. However, this pressure equalization also means that the solid backing (such as gypsum board) must be properly designed and constructed behind the panel system. The air/water barrier becomes the primary air barrier for the building. In addition to the air/water barrier, the interior air space behind the panel system is typically divided into sealed and separate compartments. This prevents the air within the air space from migrating between higher and lower pressure zones. One method to create movement of air in differing pressure zones is the use of vertical and/or horizontal sealant as shown in Figure 6, however the design of adequate compartmentalization is beyond the scope of AAMA 508. When properly designed and installed, acceptable levels of pressure equalization can be proven in laboratory test results to nationally recognized standards.	+	"Equalization is achieved by venting the interior airspace in precisely the correct locations and amounts. This venting allows air to quickly pass through the cladding joinery allowing the interior air space to quickly equalize with the exterior pressure while controlling water infiltration. However, this pressure equalization also means that the solid backing (such as gypsum board) must be properly designed and constructed behind the panel system. The air/water barrier becomes the primary air barrier for the building. In addition to the air/water barrier, the interior air space behind the panel system is typically divided into sealed and separate compartments. This prevents the air within the air space from migrating between higher and lower pressure zones. One method to create movement of air in differing pressure zones is the use of vertical and/or horizontal sealant as shown in Figure 6, however the design of adequate compartmentalization is beyond the scope of AAMA 508. When properly designed and installed, acceptable levels of pressure equalization can be proven in laboratory test results to nationally recognized standards."

	[[Category:Articles_needing_more_work]]		[[Category:Articles_needing_more_work]]

Editor at 09:55, 10 September 2024

2024-09-10T09:55:19Z

← Older revision		Revision as of 09:55, 10 September 2024
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−	~~xxxx~~	+	Wet Seal System are one of the original MCM installation systems, along with dry seals, used for around 40 years in the US and still widely used today. Also known as a “single line barrier wall” or “fully-sealed wall”, wet seal systems are installed with a joint located between adjacent panels that is fully sealed with exposed sealant. Tested in the US to AAMA 501 & 501.1 standards, in the UK fire class tests will likely be according to Euroclass A1 or A2, A or B as the lower rating.
		+
		+	[https://metalconstruction.org/ The Metal Constuction Association], [https://metalconstruction.org/index.php/online-education/mcm-panel-system-definitions Technical Bulletin MCM Panel System Definitions, dated March 2018] describes the [https://www.designingbuildings.co.uk/wiki/Design design] and [https://www.designingbuildings.co.uk/wiki/Function functions] of MCM Wet Seal [https://www.designingbuildings.co.uk/wiki/Systems Systems] as thus:
		+
		+	A pressure equalized rainscreen (PER) system design is based on the concept of having equal pressure on the exterior of the cladding and the interior air cavity. With no pressure gain/loss there is no method for the rain to enter into the system. The concept of pressure equalization has been proven in many applications and is widely used throughout the industry. Equalization is achieved by venting the interior airspace in precisely the correct locations and amounts. This venting allows air to quickly pass through the cladding joinery allowing the interior air space to quickly equalize with the exterior pressure while controlling water infiltration. However, this pressure equalization also means that the solid backing (such as gypsum board) must be properly designed and constructed behind the panel system. The air/water barrier becomes the primary air barrier for the building. In addition to the air/water barrier, the interior air space behind the panel system is typically divided into sealed and separate compartments. This prevents the air within the air space from migrating between higher and lower pressure zones. One method to create movement of air in differing pressure zones is the use of vertical and/or horizontal sealant as shown in Figure 6, however the design of adequate compartmentalization is beyond the scope of AAMA 508. When properly designed and installed, acceptable levels of pressure equalization can be proven in laboratory test results to nationally recognized standards.

	[[Category:Articles_needing_more_work]]		[[Category:Articles_needing_more_work]]

Editor: moved Pressure equalized MCM rainscreen systems to Pressure equalized rainscreen systems

2024-09-10T09:52:57Z

moved Pressure equalized MCM rainscreen systems to Pressure equalized rainscreen systems

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