Wet rot - Revision history

Designing Buildings at 08:01, 16 October 2022

2022-10-16T08:01:38Z

← Older revision		Revision as of 08:01, 16 October 2022
Line 20:		Line 20:
	It may be advisable to obtain a specialist survey if wet rot is suspected.		It may be advisable to obtain a specialist survey if wet rot is suspected.

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

−	* ~~Adhesives.~~	+	* Damp.
−	* Ancient Woodland.	+
−	* Building preservation archive.	+
−	* Confederation of Timber Industries.	+
−	* Cross-laminated timber.	+
	* Defects in construction.		* Defects in construction.
−	* Domestic roofs.
	* Dry rot.		* Dry rot.
−	* European Union Timber Regulation.
	* Flat roof defects.		* Flat roof defects.
	* Flooring defects.		* Flooring defects.
−	* Forests.
−	* Glulam.
	* Laminated veneer lumber LVL.		* Laminated veneer lumber LVL.
	* Mould growth.		* Mould growth.
−	* ~~Plywood.~~	+	* Moulds in historic buildings.
−	* Roofing defects.	+
−	* Timber.	+
−	* Timber framed buildings ~~and fire~~.	+
	* Timber preservation.		* Timber preservation.
	* Woodworm and spiders.		* Woodworm and spiders.

−	[[Category:~~Conservation~~]] [[Category:~~DCN_Definition~~]] [[Category:~~DCN_Guidance~~]] [[Category:~~DCN_Product_Knowledge~~]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Conservation]]

Designing Buildings at 08:30, 8 November 2020

2020-11-08T08:30:07Z

← Older revision		Revision as of 08:30, 8 November 2020
Line 44:		Line 44:
	* Woodworm and spiders.		* Woodworm and spiders.

−	[[Category:Conservation]]	+	[[Category:Conservation]] [[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]]

Designing Buildings at 11:40, 2 October 2019

2019-10-02T11:40:56Z

← Older revision		Revision as of 11:40, 2 October 2019
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	[[File:Wet_rot.jpg\|link=File:Wet_rot.jpg]]		[[File:Wet_rot.jpg\|link=File:Wet_rot.jpg]]

−	Wet rot is a generic name given to a range of conditions that can affect timber where there is the continual presence of moisture, perhaps caused by leaking pipework, poor ventilation (resulting in condensation), rising or penetrating damp and so on.	+	Wet rot is a generic name given to a range of conditions that can affect timber where there is the continual presence of moisture, perhaps caused by leaking pipework, poor ventilation (resulting in condensation), rising or penetrating damp and so on. If left unchecked wet rot can cause major structural damage by weakening affected timber.

−	~~Wet~~ rot is ~~more common than dry rot, but generally less problematic~~. However, ~~if left untreated,~~ it ~~can cause serious structural problems~~.	+	Of the types of rot that can take hold in a property ‘dry rot’ is the better understood. However ‘wet rot’ is equally problematic and quite distinct in its causes, where it tends to proliferate and in terms of the variety of solutions to the problem.

−	Wet rot ~~can be recognised by a damp, musty smell, fungal threads~~ of ~~black or dark blown colour, or large longitudinal cracking with minor lateral cracks~~. ~~The growth pattern is similar~~ to dry rot ~~but spores will not germinate~~ in ~~dry timber~~.	+	Wet and dry rot represent two distinct kinds of fungi. Wet rot requires a higher moisture content of around 50% (compared to 20-30% for dry rot) to grow. Being able to distinguish between the two is essential in successful steps to eradicate the problem.

−	~~Treatment typically involves replacing the affected timber. In straight-forward cases~~, ~~this may simply involve cutting out and replacing relatively small areas~~ of timber. ~~In some cases however~~, ~~it may be necessary~~ to ~~remove entire timbers~~ and ~~replace them. Where these are primary structural members~~ in ~~difficult to access areas, this can be a difficult procedure~~.	+	Wet rot can be recognised by a damp, musty smell, fungal threads of black or dark blown colour, or large longitudinal cracking with minor lateral cracks. The growth pattern is similar to dry rot but spores will not germinate in dry timber. Unlike dry rot, wet rot is more localised to the area of greatest dampness and unlike with dry rot you won’t get the red spore dust from fruiting bodies in the room.

−	It is ~~also very important to tackle~~ the ~~source of moisture~~ and to ~~dry out surrounding areas and~~ to treat ~~surrounding timbers with a timber hardener and preservative so that reoccurrence is prevented.~~	+	Moisture content as high as 50% and above is often caused by defective plumbing or guttering, broken downpipes or failing stone pointing. Once the cause is identified and fixed, there are some clear stages to go through to treat the wet rot:

−	It may be ~~advisable~~ to ~~obtain~~ a ~~specialist survey if~~ wet rot is ~~suspected~~.	+	* Strip out the entire affected area, leaving no trace behind. In straight-forward cases, this may simply involve cutting out and replacing relatively small areas of timber. In some cases however, it may be necessary to remove entire timbers and replace them. Where these are primary structural members in difficult to access areas, this can be a difficult procedure.
		+	* Repair and sometimes reinforce the weakened structural timber to protect the new timber from damp masonry.
		+	* Apply a fungicidal treatment to all of the remaining timber in and around the area, to ensure no further spread.
		+	* Once the wet rot has been fully eradicated only then is it time to decorate.

−	~~= Find~~ out ~~more =~~	+	All timber is at risk of wet rot, so the very best way to prevent it is to ensure that as little damp as possible gets into areas of high risk. Timbers under floors, joists and areas where there is piping are all ‘high risk’ areas and should be thoroughly inspected before buying an old house. In an existing property, keeping a watchful eye over these kinds of areas will help deal with a problem should it arise, before it gets out of control.
		+
		+	It may be advisable to obtain a specialist survey if wet rot is suspected.

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

	* Adhesives.		* Adhesives.

Designing Buildings at 11:25, 9 July 2019

2019-07-09T11:25:34Z

← Older revision		Revision as of 11:25, 9 July 2019
Line 31:		Line 31:
	* Glulam.		* Glulam.
	* Laminated veneer lumber LVL.		* Laminated veneer lumber LVL.
		+	* Mould growth.
	* Plywood.		* Plywood.
	* Roofing defects.		* Roofing defects.

Designing Buildings at 08:36, 3 October 2016

2016-10-03T08:36:16Z

← Older revision		Revision as of 08:36, 3 October 2016
Line 3:		Line 3:
	Wet rot is a generic name given to a range of conditions that can affect timber where there is the continual presence of moisture, perhaps caused by leaking pipework, poor ventilation (resulting in condensation), rising or penetrating damp and so on.		Wet rot is a generic name given to a range of conditions that can affect timber where there is the continual presence of moisture, perhaps caused by leaking pipework, poor ventilation (resulting in condensation), rising or penetrating damp and so on.

−	Wet rot is ~~ore~~ common than dry rot, but generally less problematic~~, however~~, if left untreated, it can cause structural problems.	+	Wet rot is more common than dry rot, but generally less problematic. However, if left untreated, it can cause serious structural problems.

	Wet rot can be recognised by a damp, musty smell, fungal threads of black or dark blown colour, or large longitudinal cracking with minor lateral cracks. The growth pattern is similar to dry rot but spores will not germinate in dry timber.		Wet rot can be recognised by a damp, musty smell, fungal threads of black or dark blown colour, or large longitudinal cracking with minor lateral cracks. The growth pattern is similar to dry rot but spores will not germinate in dry timber.

Designing Buildings at 08:35, 3 October 2016

2016-10-03T08:35:39Z

← Older revision		Revision as of 08:35, 3 October 2016
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−	[[File:~~Wet rot~~.jpg]]	+	[[File:Wet_rot.jpg\|link=File:Wet_rot.jpg]]

−	Wet rot can ~~occur~~ where there is the continual presence of moisture, ~~such as~~ leaking pipework, ~~a lack of~~ ventilation ~~which results~~ in condensation, or ~~a defective~~ damp ~~proof course. The growth pattern is similar to dry rot but spores will not germinate in dry timber~~.	+	Wet rot is a generic name given to a range of conditions that can affect timber where there is the continual presence of moisture, perhaps caused by leaking pipework, poor ventilation (resulting in condensation), rising or penetrating damp and so on.

−	Wet rot can be recognised by fungal threads of black or dark blown colour, large longitudinal cracking with minor lateral cracks.	+	Wet rot is ore common than dry rot, but generally less problematic, however, if left untreated, it can cause structural problems.
		+
		+	Wet rot can be recognised by a damp, musty smell, fungal threads of black or dark blown colour, or large longitudinal cracking with minor lateral cracks. The growth pattern is similar to dry rot but spores will not germinate in dry timber.
		+
		+	Treatment typically involves replacing the affected timber. In straight-forward cases, this may simply involve cutting out and replacing relatively small areas of timber. In some cases however, it may be necessary to remove entire timbers and replace them. Where these are primary structural members in difficult to access areas, this can be a difficult procedure.
		+
		+	It is also very important to tackle the source of moisture and to dry out surrounding areas and to treat surrounding timbers with a timber hardener and preservative so that reoccurrence is prevented.
		+
		+	It may be advisable to obtain a specialist survey if wet rot is suspected.

	= Find out more =		= Find out more =

Designing Buildings at 08:22, 3 October 2016

2016-10-03T08:22:27Z

← Older revision		Revision as of 08:22, 3 October 2016
Line 1:		Line 1:
−	~~#redirect:~~[[~~Timber_preservation#Wet_rot\|Timber preservation#~~Wet rot]]	+	[[File:Wet rot.jpg]]
		+
		+	Wet rot can occur where there is the continual presence of moisture, such as leaking pipework, a lack of ventilation which results in condensation, or a defective damp proof course. The growth pattern is similar to dry rot but spores will not germinate in dry timber.
		+
		+	Wet rot can be recognised by fungal threads of black or dark blown colour, large longitudinal cracking with minor lateral cracks.
		+
		+	= Find out more =
		+
		+	=== Related articles on Designing Buildings Wiki ===
		+
		+	* Adhesives.
		+	* Ancient Woodland.
		+	* Building preservation archive.
		+	* Confederation of Timber Industries.
		+	* Cross-laminated timber.
		+	* Defects in construction.
		+	* Domestic roofs.
		+	* Dry rot.
		+	* European Union Timber Regulation.
		+	* Flat roof defects.
		+	* Flooring defects.
		+	* Forests.
		+	* Glulam.
		+	* Laminated veneer lumber LVL.
		+	* Plywood.
		+	* Roofing defects.
		+	* Timber.
		+	* Timber framed buildings and fire.
		+	* Timber preservation.
		+	* Woodworm and spiders.
		+
		+	[[Category:Conservation]]

Editor: Redirected page to Timber preservation#Wet rot

2016-04-21T14:17:27Z

Redirected page to Timber preservation#Wet rot

New page

#redirect:[[Timber_preservation#Wet_rot|Timber preservation#Wet rot]]