In this episode of Talking Conservation, Rich and Stephen unpack one of the most feared problems in old buildings: Dry Rot.

We look at what dry rot actually is, why the name is misleading, how it differs from so-called wet rot, and why the presence of a fruiting body does not always mean you need to panic. We also explain why moisture is still the key factor, how rot really spreads, when identification matters, and why some of the old advice around chemicals and cutting back timber simply does not stand up.

This episode is not about turning viewers into rot identification experts. It is about helping owners of older buildings understand the basics, avoid common misunderstandings, and make better decisions before rushing into unnecessary treatments or repairs.

In this episode we cover:

- Why dry rot is such a feared term

- Why the name “dry rot” is actually misleading

- The difference between dry rot, wet rot, brown rot and white rot

- Whether it really matters to identify the exact fungus

- How dry rot spreads, and what it can’t do

- Why moisture is still the critical factor

- When to worry, and when not to

- Why chemicals are often overused

- Why fixing the moisture source is the real priority

- Why monitoring and maintenance matter after repairs

If you own, survey, repair, or care for an older building, this episode will help you understand dry rot in a more measured and practical way.

Coming up next in the timber series: Next we move on to woodworm and other beetle infestations, looking at when they matter, when they do not, and what you actually need to do about them.

Useful links

Expertible, book a 1:1 call with an independent expert:https://www.expertible.com

Stephen’s conservation training and CPD:https://www.beconservation.com

For the BRE downloadable book referred to in this episode visit: https://bregroup.com/store/bookshop/recognising-wood-rot-and-insect-damage-in-buildings.-3rd-edition-br-453-download

Talking Conservation is the podcast all about the conservation of old, traditional, and historic buildings and sites.

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#TalkingConservation #DryRot #WetRot #TimberDecay #TimberRot #OldBuildings #BuildingConservation #HistoricBuildings #PeriodProperty #HeritageBuildings

Chapters00:00 Intro.00:11 Intro to subject, dry and other rots.01:27 Review of previous episode02:08 Why is dry rot a bad name for it?05:01 What are brown and white rots (and soft rot)?11:27 Identifying rots (and infestations) using BRE book 12:20 Does identification of the precise type of rot matter?14:34 What is the most destructive rot in the UK?15:00 Stephen’s Advert15:41 Assessing and identifying rot is about risk analysis16:05 How rots work (the scientific bit!)17:22 Is dry rot a water carrier – myth or not?19:29 Expertible Advert20:12 Stephen’s case study22:02 Rich’s case study24:40 Blow torches - a cure for dry rot?26:18 Should we cut back 1 metre beyond the rot?28:33 The different impacts between persistent and intermittent moisture.29:34 Stephen’s second case study34:02 Should we panic if a rot outbreak is found?36:48 Use of chemicals (or not) to tackle rot.38:51 Summary of approach from BRE book.40:35 Stop the moisture!41:49 Maintenance is THE most important thing.42:58 Future episode on repair methods.43:49 Episode summary and wrap up.44:38 Next episode subject matter – insect infestation.45:03 Concluding comments.45:50 Outro music