Intumescent strip - Revision history

Editor at 11:51, 31 December 2024

2024-12-31T11:51:40Z

← Older revision		Revision as of 11:51, 31 December 2024
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	The correct seal type and size for any particular door can be determined by reference to door-test data. Once cut to the right length, most intumescent seals have a self-adhesive backing to allow a secure fit into the groove.		The correct seal type and size for any particular door can be determined by reference to door-test data. Once cut to the right length, most intumescent seals have a self-adhesive backing to allow a secure fit into the groove.

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

	* Cavity barrier.		* Cavity barrier.
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	* Installing fire protection to structural steelwork (GG 85).		* Installing fire protection to structural steelwork (GG 85).
	* Intumescent coatings in buildings		* Intumescent coatings in buildings
		+	* Intumescent fire and smoke seal.
	* Metal fabrication.		* Metal fabrication.
	* Paints and coatings.		* Paints and coatings.

Designing Buildings at 08:15, 21 February 2021

2021-02-21T08:15:33Z

← Older revision		Revision as of 08:15, 21 February 2021
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	* Substrate.		* Substrate.

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

Designing Buildings at 13:02, 17 August 2019

2019-08-17T13:02:29Z

← Older revision		Revision as of 13:02, 17 August 2019
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	= Introduction =		= Introduction =

−	Intumescence is a chemical process which involves the swelling of crystals on heating and is often accompanied by a violent escape of moisture. In a building fire, the heat makes the intumescent material expand and bubble, sealing any gaps between a door and its frame. This is of huge importance for fire safety as it can be used to help reduce the spread of smoke and flame. People are therefore given a few precious extra seconds to escape from a property before the fire spreads and there is a dangerous level of smoke.	+	Intumescence is a chemical process which involves the swelling of crystals on heating and is often accompanied by a violent escape of moisture.

−	~~Placed around~~ a ~~door opening~~, ~~a strip~~ of intumescent material can ~~stop~~ the spread of ~~fire and~~ smoke ~~for up to an hour. However~~, ~~these strips should be inspected regularly for any tears~~ or ~~damage. If damage~~ is ~~evident, the strips should be replaced as soon as possible as their performance in~~ a ~~fire will likely have been compromised~~.	+	In a building, the heat of a fire can make intumescent material expand and bubble, sealing gaps, such as those between a door and its frame or around glazing. This is of great importance for fire safety as it can help reduce the spread of smoke and flame, allowing occupants additional time to escape before the fire spreads or there is a dangerous level of smoke.

−	Intumescent strips are particularly useful in apartment buildings and offices that have shared stairwells and fire escapes. They are usually fitted into the door frame but are sometimes recessed into groves cut into the door. It is possible to fit ~~regular~~ doors with an intumescent strip but this will not make them fire doors.	+	Placed around a door opening, a strip of intumescent material can stop the spread of fire and smoke for up to an hour. However, these strips should be inspected regularly for any tears or damage. If damage is evident, the strips should be replaced as soon as possible as their performance in a fire may have been compromised.
		+
		+	Intumescent strips are particularly useful in apartment buildings and offices that have shared stairwells and fire escapes. They are usually fitted into the door frame but are sometimes recessed into groves cut into the door. It is possible to fit normal doors with an intumescent strip but this will not make them fire doors.

	= Types of intumescent strip =		= Types of intumescent strip =
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	=== Fire and smoke ===		=== Fire and smoke ===

−	~~It is widely known that smoke inhalation kills more people than fire itself.~~ This type of intumescent strip expands and seals in the same way. However, it incorporates a brush strip which stops the spread of smoke even before expansion has occurred through heat activation. This is important as, for example, doors at a distance from the fire may not be ~~subjected~~ to the heat at the fire’s origin therefore their intumescent strips will not have yet been activated by heat. However, if fitted with a fire and smoke intumescent seal, cold smoke can be prevented from ~~entering the accommodation well~~ before the heat and flames have reached the door.	+	This type of intumescent strip expands and seals in the same way. However, it incorporates a brush strip which stops the spread of smoke even before expansion has occurred through heat activation. This is important as, for example, doors at a distance from the fire may not be subject to the heat at the fire’s origin therefore their intumescent strips will not have yet been activated by heat. However, if fitted with a fire and smoke intumescent seal, cold smoke can be prevented from spreading before the heat and flames have reached the door.

	== Selecting the right seal ==		== Selecting the right seal ==
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	* Substrate.		* Substrate.

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

Editor at 18:08, 14 August 2019

2019-08-14T18:08:02Z

← Older revision		Revision as of 18:08, 14 August 2019
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	* Installing fire protection to structural steelwork (GG 85).		* Installing fire protection to structural steelwork (GG 85).
	* Intumescent coatings in buildings		* Intumescent coatings in buildings
−	* Intumescent strip.
	* Metal fabrication.		* Metal fabrication.
	* Paints and coatings.		* Paints and coatings.

Editor at 18:07, 14 August 2019

2019-08-14T18:07:36Z

← Older revision		Revision as of 18:07, 14 August 2019
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		+	= Introduction =
		+
	Intumescence is a chemical process which involves the swelling of crystals on heating and is often accompanied by a violent escape of moisture. In a building fire, the heat makes the intumescent material expand and bubble, sealing any gaps between a door and its frame. This is of huge importance for fire safety as it can be used to help reduce the spread of smoke and flame. People are therefore given a few precious extra seconds to escape from a property before the fire spreads and there is a dangerous level of smoke.		Intumescence is a chemical process which involves the swelling of crystals on heating and is often accompanied by a violent escape of moisture. In a building fire, the heat makes the intumescent material expand and bubble, sealing any gaps between a door and its frame. This is of huge importance for fire safety as it can be used to help reduce the spread of smoke and flame. People are therefore given a few precious extra seconds to escape from a property before the fire spreads and there is a dangerous level of smoke.

Editor: Created page with "Intumescence is a chemical process which involves the swelling of crystals on heating and is often accompanied by a violent escape of moisture. In a building fire, the heat makes..."

2019-08-14T18:07:11Z

Created page with "Intumescence is a chemical process which involves the swelling of crystals on heating and is often accompanied by a violent escape of moisture. In a building fire, the heat makes..."

New page

Intumescence is a chemical process which involves the swelling of crystals on heating and is often accompanied by a violent escape of moisture. In a building fire, the heat makes the intumescent material expand and bubble, sealing any gaps between a door and its frame. This is of huge importance for fire safety as it can be used to help reduce the spread of smoke and flame. People are therefore given a few precious extra seconds to escape from a property before the fire spreads and there is a dangerous level of smoke.

Placed around a door opening, a strip of intumescent material can stop the spread of fire and smoke for up to an hour. However, these strips should be inspected regularly for any tears or damage. If damage is evident, the strips should be replaced as soon as possible as their performance in a fire will likely have been compromised.

Intumescent strips are particularly useful in apartment buildings and offices that have shared stairwells and fire escapes. They are usually fitted into the door frame but are sometimes recessed into groves cut into the door. It is possible to fit regular doors with an intumescent strip but this will not make them fire doors.

= Types of intumescent strip =

=== Fire only ===

Fire-only intumescent strips are activated on contact with fire, expanding and bubbling as the temperature rises.

=== Fire and smoke ===

It is widely known that smoke inhalation kills more people than fire itself. This type of intumescent strip expands and seals in the same way. However, it incorporates a brush strip which stops the spread of smoke even before expansion has occurred through heat activation. This is important as, for example, doors at a distance from the fire may not be subjected to the heat at the fire’s origin therefore their intumescent strips will not have yet been activated by heat. However, if fitted with a fire and smoke intumescent seal, cold smoke can be prevented from entering the accommodation well before the heat and flames have reached the door.

== Selecting the right seal ==

The correct seal type and size for any particular door can be determined by reference to door-test data. Once cut to the right length, most intumescent seals have a self-adhesive backing to allow a secure fit into the groove.

= Related articles on Designing Buildings Wiki =

* Cavity barrier.
* Concrete vs. steel.
* Finishes.
* Fire protection engineering.
* Fire resistance.
* Fire safety design.
* Installing fire protection to structural steelwork (GG 85).
* Intumescent coatings in buildings
* Intumescent strip.
* Metal fabrication.
* Paints and coatings.
* Passive and reactive fire protection to structural steel (IP 6 12).
* Substrate.

[[Category:Design]] [[Category:Products_/_components]]