Is this dry rot, what can I do?

[robodelfy]

Years ago I had a window that was falling apart in my bathroom. I got it replaced with a PVC window and the guy didn't mention anything about the state of the wood around the window.

Now I'm renovating the bathroom and I've found the wood under the window is soft and crumbly. Is this dry rot? Could it just be from when it got wet in the past and now its dry?

Is it possible to tell from the photos, and any advice on what to do? Thanks

 

[123458384735783]

Looks in a bad state. Get some Ronseal hardener for a quick and easy fix if it’s soft.

 

[mikeey84]

Ideally it needs removing. You could remove half of it, replace it with a few bricks mortared in,w a couple of days, then remove the other half. If you do, worth painting rot treatment round the cavity that's left.

Also worth treating any joists and floorboards with a meter, as it can spread.

If removing it is a daunting task, cover it with as many coats of rot treatment as you can, followed by hardener.

 

[Munroast]

It doesn't look like 'Dry Rot' it looks like 'Wet Rot' that has dried out. It needs replaced so hopefully you won't find bits that you can't presently see that is Dry Rot, Dry Rot can be a horrible destructive and expensive problem. If you are not sure when taking it out get an expert to look at it. With Dry Rot you usually see a root system growing out of the wood into the adjacent masonry.

How far can you push a screwdriver into it?

 

[robodelfy]

It doesn't look like 'Dry Rot' it looks like 'Wet Rot' that has dried out. It needs replaced so hopefully you won't find bits that you can't presently see that is Dry Rot, Dry Rot can be a horrible destructive and expensive problem. If you are not sure when taking it out get an expert to look at it. With Dry Rot you usually see a root system growing out of the wood into the adjacent masonry.

How far can you push a screwdriver into it?

This is kind of what I'm thinking, as I know the old window must have let in water. But the new one is totally sealed, so it seems like it has just dried out. I will be there tomorrow, so I'll try with a screwdriver and see, should I be looking out for anything?

 

[^woody^]

Cut the thing out and be done with it.

 

[robodelfy]

Cut the thing out and be done with it.

Cut it out and...replace is with something?

 

[robodelfy]

Ok so 2 layers of bricks below this piece of wood were falling apart and there was all this black stuff that seemed a bit like soil! Is it old mortar? Anyway, I took out the wood, and all the disintegrating bricks, and I'll just put some new bricks in and fill out all the gaps with mortar

 

[bobasd]

OP,
Remove and hack off all the loose plaster and plaster laths.
You will probably have to go down to the floor and past that whatever it is on the right hand side. Then post a pic of whats there eg masonry and/or studding.
Post a pic of the outside as well please.
It will be simple enough to later remove the rotten packing piece - i doubt that its giving much support to the Pvc frame.

 

[noseall]

Cut the thing out and be done with it.

It looks to me like the entire window is framed in a crap casement and the whole elevation is of slender (half brick) construction.

I'm thinking the whole wall needs a thermal/structural upgrade, especially as it is a bathroom.

 

[robodelfy]

It looks to me like the entire window is framed in a crap casement and the whole elevation is of slender (half brick) construction.

I'm thinking the whole wall needs a thermal/structural upgrade, especially as it is a bathroom.

What do you think looking at this new photo? It's just under the window that seems bad because after used to get in.

What would a thermal/structural upgrade entail?

 

[bobasd]

The wood you've exposed is part of an older wood frame - the Pvc frame was inserted in the remains of the original frame.
Pics from outside will tell more esp if damp is a continuing issue or the original frame is exposed to weather.

The bath and false floor need removing, and the window wall needs hacking back to brick from floor to ceiling.
The stud wall can be drilled for supplies and waste

 

[robodelfy]

The wood you've exposed is part of an older wood frame - the Pvc frame was inserted in the remains of the original frame.
Pics from outside will tell more esp if damp is a continuing issue or the original frame is exposed to weather.

The bath and false floor need removing, and the window wall needs hacking back to brick from floor to ceiling.
The stud wall can be drilled for supplies and waste

Thanks I think all the issues under the window were from a seriously broken old window, it was years ago but I remember it was an issue. I'll have a look outside tomorrow

The remaining plaster/render is so fixed it's really not coming off. Someone else in this thread said if its that solid I could plaster over it. What do you think?

The floor I will fill in that missing bit with ply, then someone is coming to put more ply perfectly level and feathered and then LVT tiles. I am going to use moisture resistant plasterboard on the walls tomorrow, I wasn't going to bother insulating.

 

[noseall]

I wasn't going to bother insulating.

You seem to be forfeiting the most important bit of the renovation, especially as it is a bathroom.

 

[robodelfy]

You seem to be forfeiting the most important bit of the renovation, especially as it is a bathroom.

Sorry why is it so important to insulate a single internal wall between bedroom and bathroom, warmth or sound? I am really new to all this. What would you insulate it with if you did