One for Matt Green

[nickkellymetal]

I posted on here previously regarding a battle with dry rot. I've been at it for around 3 months now and no matter what I do, it just keeps growing back on the brickwork. I've got through 10 liters of masonry biocide, trying to kill off but no matter what I do it just keeps coming back. What puzzles me is that it's very very dry in the sub floor. I just can't figure out how it's still growing.

There's nothing growing on any of the timber at all, it always comes back on the masonry, on the same patch of wall, which is a party wall to the adjoining property which is near the front door. I scrape it off, treat the wall with biocide and within 3-4 weeks there will be small bits of fluffy white mycelium coming through the mortar joints.

Is there anything else st all anyone could suggest? I can only think it's feeding off something in the adjoining property (which is now empty). Picture of the white fluff attached, you can see it to the left thanks

 

[Matt Green]

You remember when I said:

That was a catastrophically bad thing to have done.

I wasn't joking. I'm a man prone to exaggeration for comic effect as anyone who has seen me talk on this subject will attest, but not in this case. It really was one of the worst things that could have happened to your house (and your neighbours').

It's still there, it's growing on something under the floor of their house or close to it. It will take a long time to die.

When I was working for Ridout's we had an annual contract to check a vicarage in Yorkshire where there was not a scrap of timber in the place: concrete lintels, plastic windows, plastic skirting boards. In the boiler room beneath dry rot used to bloom on the walls infrequently and we were employed by the diose to check it was under control and recommend fungicidal masonry sprays when appropriate. the theory was that it was growing in/on coffins on the other side of the wall. They had had the contract for years.

 

[nickkellymetal]

I posted on here previously regarding a battle with dry rot. I've been at it for around 3 months now and no matter what I do, it just keeps growing back on the brickwork. I've got through 10 liters of masonry biocide, trying to kill off but no matter what I do it just keeps coming back. What puzzles me is that it's very very dry in the sub floor. I just can't figure out how it's still growing.

There's nothing growing on any of the timber at all, it always comes back on the masonry, on the same patch of wall, which is a party wall to the adjoining property which is near the front door. I scrape it off, treat the wall with biocide and within 3-4 weeks there will be small bits of fluffy white mycelium coming through the mortar joints.

Is there anything else st all anyone could suggest? I can only think it's feeding off something in the adjoining property (which is now empty). Picture of the white fluff attached, you can see it to the left thanks

View attachment 14994

I was thinking, it seems to keep growing through the same area, where the mortar is missing in the bricks, would it be an idea to seal the gaps with a fungicidal silicone? Or will it just grow through it?

 

[Gothichome]

I have a question about ridding mold from damp or previously damp ares, would a coat of lye spread over the affected area do the trick. I can’t see any thing growing on lye. Just a thought I’m throwing out there.
Ron

 

[nickkellymetal]

You remember when I said:



I wasn't joking. I'm a man prone to exaggeration for comic effect as anyone who has seen me talk on this subject will attest, but not in this case. It really was one of the worst things that could have happened to your house (and your neighbours').

It's still there, it's growing on something under the floor of their house or close to it. It will take a long time to die.

When I was working for Ridout's we had an annual contract to check a vicarage in Yorkshire where there was not a scrap of timber in the place: concrete lintels, plastic windows, plastic skirting boards. In the boiler room beneath dry rot used to bloom on the walls infrequently and we were employed by the diose to check it was under control and recommend fungicidal masonry sprays when appropriate. the theory was that it was growing in/on coffins on the other side of the wall. They had had the contract for years.

Sorry mate I somehow missed your reply. Thank you for that. Is there anything at all that you think might the slightest chance at keeping it from growing? I have a tin of zinsser watertite I was thinking I could put on the wall to seal it, is it pointless? I still haven't got round to adding another air bricks so that's my next attempt at an intervention. Also just to note, I've been using everbuild dry rot masonry biocide, is this any good? Thanks alot really appreciate the help

 

[Matt Green]

Morning, sealing the wall will likely just push the water and the fungus somewhere else. Any masonry biocide will kill the mycelium, it's not hard to kill, it's just tenacious.

The situation will take a while to resolve I'm afraid.

M