Tanking - Revision history

Designing Buildings at 08:19, 5 October 2020

2020-10-05T08:19:06Z

← Older revision		Revision as of 08:19, 5 October 2020
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	* Treating brickwork with sealant or water repellent.		* Treating brickwork with sealant or water repellent.

−	[[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]]

Editor at 17:31, 16 May 2019

2019-05-16T17:31:06Z

← Older revision		Revision as of 17:31, 16 May 2019
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	Both floors and walls may require tanking to prevent water ingress.		Both floors and walls may require tanking to prevent water ingress.

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

	* Basement waterproofing.		* Basement waterproofing.
		+	* Bitumen.
	* Damp in buildings.		* Damp in buildings.
	* Damp proofing.		* Damp proofing.
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	* Treating brickwork with sealant or water repellent.		* Treating brickwork with sealant or water repellent.

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

Editor at 13:48, 20 April 2018

2018-04-20T13:48:19Z

← Older revision		Revision as of 13:48, 20 April 2018
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	* Basement waterproofing.		* Basement waterproofing.
	* Damp in buildings.		* Damp in buildings.
		+	* Damp proofing.
	* Defects in brickwork.		* Defects in brickwork.
	* Dry lining.		* Dry lining.

Designing Buildings at 14:14, 17 April 2018

2018-04-17T14:14:00Z

← Older revision		Revision as of 14:14, 17 April 2018
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	= Coating =		= Coating =

−	~~There are two types of tanking coating – liquid~~ bitumen and tanking slurry.	+	Tanking coatings include; bitumen, asphalt, resin/tar and tanking slurry.

−	Liquid bitumen is painted onto cleaned masonry or render but is best for smaller jobs or for coating externally below the damp-proof course. ~~This is because it~~ can prove difficult to apply to masonry in older buildings as it can separate from the wall if applied incorrectly.	+	Liquid bitumen is painted onto cleaned masonry or render but is best for smaller jobs or for coating externally below the damp-proof course. It can prove difficult to apply to masonry in older buildings as it can separate from the wall if applied incorrectly.

−	~~Cement based-tanking slurry is~~ typically ~~used for larger areas. It can be applied~~ with ~~a brush, and once dry, overcoated with a breathable render and finished with plasterboard~~ or ~~plaster~~.	+	Resin/tar coatings are typically epoxy or polyurethane resins extended with tar or bitumen. They are generally able to withstand higher pressures than bitumen coatings.

−	~~Floors~~ and walls ~~will~~ require tanking to prevent water ingress.	+	Asphalt is typically applied in a thick coat with a further wall constructed to prevent it from delaminating under water pressure.
		+
		+	Cement based tanking slurry is typically used for larger areas. It can be applied with a brush, and once dry, overcoated with a breathable render and finished with plasterboard or plaster.
		+
		+	Both floors and walls may require tanking to prevent water ingress.

	= Find out more =		= Find out more =

Designing Buildings at 14:02, 17 April 2018

2018-04-17T14:02:10Z

← Older revision		Revision as of 14:02, 17 April 2018
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	= Tanking membranes =		= Tanking membranes =

−	Tanking membranes (or cavity drain membranes) consist of a studded or dimpled plastic sheet which is fixed onto the internal face of masonry, block or rendered walls and sealed with tape~~, leaving an air gap cavity between the wall and membrane~~.	+	Tanking membranes (or cavity drain membranes) consist of a studded or dimpled plastic sheet which is fixed onto the internal face of masonry, block or rendered walls and sealed with tape.

−	Where there is no visible water in the cavity, ventilation may be adequate to prevent the accumulation of moisture. Where water is present, drainage or a or sump and pump may be necessary.	+	The studs create an air gap cavity between the wall and membrane. Where there is no visible water in the cavity, ventilation may be adequate to prevent the accumulation of moisture. Where water is present, drainage or a or sump and pump may be necessary.

	Tanking membranes can have a plain surface which allows battening and insulation boards to be attached to them, or a mesh surface for direct plastering.		Tanking membranes can have a plain surface which allows battening and insulation boards to be attached to them, or a mesh surface for direct plastering.

Designing Buildings at 14:00, 17 April 2018

2018-04-17T14:00:27Z

← Older revision		Revision as of 14:00, 17 April 2018
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	Liquid bitumen is painted onto cleaned masonry or render but is best for smaller jobs or for coating externally below the damp-proof course. This is because it can prove difficult to apply to masonry in older buildings as it can separate from the wall if applied incorrectly.		Liquid bitumen is painted onto cleaned masonry or render but is best for smaller jobs or for coating externally below the damp-proof course. This is because it can prove difficult to apply to masonry in older buildings as it can separate from the wall if applied incorrectly.

−	Cement based-tanking slurry is ~~often~~ used ~~as an exterior coating on foundation walls~~ or ~~partial below-ground applications~~.	+	Cement based-tanking slurry is typically used for larger areas. It can be applied with a brush, and once dry, overcoated with a breathable render and finished with plasterboard or plaster.
		+
		+	Floors and walls will require tanking to prevent water ingress.

	= Find out more =		= Find out more =

Designing Buildings at 13:54, 17 April 2018

2018-04-17T13:54:44Z

← Older revision		Revision as of 13:54, 17 April 2018
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	= Tanking membranes =		= Tanking membranes =

−	Tanking membranes consist of a studded or dimpled plastic sheet which is fixed onto masonry, block or rendered walls ~~with plugs~~ and sealed with tape ~~for form~~ an air gap cavity~~, allowing ventilation~~ between wall and membrane.	+	Tanking membranes (or cavity drain membranes) consist of a studded or dimpled plastic sheet which is fixed onto the internal face of masonry, block or rendered walls and sealed with tape, leaving an air gap cavity between the wall and membrane.

−	~~Membranes~~ can have a plain surface which allows battening and insulation boards to be attached to them, or a mesh surface for direct plastering.	+	Where there is no visible water in the cavity, ventilation may be adequate to prevent the accumulation of moisture. Where water is present, drainage or a or sump and pump may be necessary.
		+
		+	Tanking membranes can have a plain surface which allows battening and insulation boards to be attached to them, or a mesh surface for direct plastering.

	= Coating =		= Coating =
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	Liquid bitumen is painted onto cleaned masonry or render but is best for smaller jobs or for coating externally below the damp-proof course. This is because it can prove difficult to apply to masonry in older buildings as it can separate from the wall if applied incorrectly.		Liquid bitumen is painted onto cleaned masonry or render but is best for smaller jobs or for coating externally below the damp-proof course. This is because it can prove difficult to apply to masonry in older buildings as it can separate from the wall if applied incorrectly.

−	~~Tanking~~ slurry ~~is easier to apply than bitumen and~~ is often used as an exterior coating on foundation walls or partial below-ground applications.	+	Cement based-tanking slurry is often used as an exterior coating on foundation walls or partial below-ground applications.
−		+
−	~~=== How to apply coatings ===~~	+
−		+
−	~~The following steps can be followed for the application of coatings:~~	+
−		+
−	* Remove old plaster, paint and/or render from walls and clean thoroughly.	+
−	* Apply a salt neutraliser to prevent salts entering the coating and causing damage.	+
−	* If there are holes causing water to seep from the wall, a quick-setting plug should be applied.	+
−	* First coat should be applied and left to cure for approximately 6 hours.	+
−	* Second coat should then be applied and left to cure.	+
−	* Re-plaster, render or paint over.	+

	= Find out more =		= Find out more =

Designing Buildings at 13:42, 17 April 2018

2018-04-17T13:42:35Z

← Older revision		Revision as of 13:42, 17 April 2018
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	= Introduction =		= Introduction =

−	Tanking is a term used for creating a tank-like seal to protect walls against water. The Building Regulations stipulate that tanking must be applied to all new build structures below ~~the~~ ground, but tanking can also be applied to existing buildings, to prevent water ~~egress to~~ basements and cellars~~, for example~~, as well as helping to tackle ~~mould and~~ damp.	+	Tanking is a term used for creating a tank-like seal to protect walls against water penetration. The Building Regulations stipulate that tanking must be applied to all new build structures below ground, but tanking can also be applied to existing buildings, to prevent water penetration into basements and cellars, as well as helping to tackle rising damp.

	The two main methods of tanking are by using a membrane or a coating. The type of damp and the precise requirements of the building will determine the most appropriate method to use, and sometimes a combination is required to ensure walls remain dry.		The two main methods of tanking are by using a membrane or a coating. The type of damp and the precise requirements of the building will determine the most appropriate method to use, and sometimes a combination is required to ensure walls remain dry.

Editor: Created page with "= Introduction = Tanking is a term used for creating a tank-like seal to protect walls against water. The Building Regulations stipulate that tanking must be applied to all new ..."

2018-03-15T13:39:28Z

Created page with "= Introduction = Tanking is a term used for creating a tank-like seal to protect walls against water. The Building Regulations stipulate that tanking must be applied to all new ..."

New page

= Introduction =

Tanking is a term used for creating a tank-like seal to protect walls against water. The Building Regulations stipulate that tanking must be applied to all new build structures below the ground, but tanking can also be applied to existing buildings, to prevent water egress to basements and cellars, for example, as well as helping to tackle mould and damp.

The two main methods of tanking are by using a membrane or a coating. The type of damp and the precise requirements of the building will determine the most appropriate method to use, and sometimes a combination is required to ensure walls remain dry.

= Tanking membranes =

Tanking membranes consist of a studded or dimpled plastic sheet which is fixed onto masonry, block or rendered walls with plugs and sealed with tape for form an air gap cavity, allowing ventilation between wall and membrane.

Membranes can have a plain surface which allows battening and insulation boards to be attached to them, or a mesh surface for direct plastering.

= Coating =

There are two types of tanking coating – liquid bitumen and tanking slurry.

Liquid bitumen is painted onto cleaned masonry or render but is best for smaller jobs or for coating externally below the damp-proof course. This is because it can prove difficult to apply to masonry in older buildings as it can separate from the wall if applied incorrectly.

Tanking slurry is easier to apply than bitumen and is often used as an exterior coating on foundation walls or partial below-ground applications.

=== How to apply coatings ===

The following steps can be followed for the application of coatings:

* Remove old plaster, paint and/or render from walls and clean thoroughly.
* Apply a salt neutraliser to prevent salts entering the coating and causing damage.
* If there are holes causing water to seep from the wall, a quick-setting plug should be applied.
* First coat should be applied and left to cure for approximately 6 hours.
* Second coat should then be applied and left to cure.
* Re-plaster, render or paint over.

= Find out more =

=== Related articles on Designing Buildings Wiki ===

* Basement waterproofing.
* Damp in buildings.
* Defects in brickwork.
* Dry lining.
* Latent defects.
* Penetrating damp.
* Plaster.
* Rising damp.
* Rising damp in walls - diagnosis and treatment (DG 245).
* Sealant.
* Treating brickwork with sealant or water repellent.

[[Category:Construction_techniques]] [[Category:Products_/_components]]