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So, as the title suggests. I am wondering if there is any rule of thumb of sized room before the big drum sanders you can hire become more of a hindrance than a help. When I have used these before, even in bigger rooms you have to start a good bit into the room because the handle and you are...

Yes, I was a bit wary of getting to close and personal with it, even putting aside the fact that you are not supposed to mess around with the power company cable. I mean its a live cable capable of carrying well over 100 amps, there's no coming back from that if it goes wrong! What I did in the...

Thanks. Just checking that I was clear enough that this cable is the incoming cable from the electricity supply network. There is no fuse/circuit breaker prior to this so I am a bit wary of getting too close to it and I am not sure if I am allowed to mess with the cable owned by the network...

Thanks Adam, was doing a bit of a search myself about concrete/cement and cables and found the below basically saying that the energy company will do their nut if you pour concrete around their cables. Allegedly it can corrode them...

While investigating dampness issue I found a hole under the shallow footings (200 year old house). Tried pushing a drain pole down to see if it went all the way into the house and therefore a possible cause of the dampness, and found that it came through in the meter cupboard near the mains...

Might be worthwhile if I offer the point of view of the person who owns the tree, as I have been on the other side of the fence (pardon the pun) where my neighbour demanded that I crown my tree. My feeling was that the tree was mature and a similar height when they bought the property, and I...

I'm fairly happy now that the ventilation is going to be ok with this floor, but before closing I have noticed that there is a lot of dampness around the metal pipe that has been run underground to provide subfloor ventilation. No actual water/drips etc, just very damp clay or possibly damp lime...

Agreed. My main concern is the bottom left corner area in my diagram, that's why I have the sensor there.

I like the analogy, makes sense, just not sure its quite the same thing. The water evaporates into the air because the RH is less than 100%, if it was at 100% the washing would never dry. I think that the reason that wind helps is that it ensures the RH immediately next to the wet washing is...

I'm not sure what damp you are referring to. I've said in my OP that the original joists were resting on the soil, so they would have been sucking moisture directly from the ground. I've rectified that, my question now is as a belt and braces, ensuring that the humidity in the void is under control.

Can you explain that? See my post above, RH will be lower under the floor than outside if the underfloor temp is higher than outside, and higher relative to outside when the under floor temp is lower than outside.

I understand what you are saying, but in my OP I mentioned that I tried positioning a temporary fan in front of one of the vents and the RH didn't drop. As far as I understand it the only purpose to adding a fan and increasing airflow would be to reduce the RH. Below is a quick sketch of the...

Thanks for the replies. The wood is C24 treated so it should last a good while even if the conditions are poor. The vents are clear and unobstructed so there is air flow, but its never going to be a strong through flow of air because the vents are on the north and east due to solid floors on the...

Hi John, I am not asking about damp, I'm asking what the RH in a subfloor void should be.

I am wondering if anyone has any views/knowledge on ideal relative humidity in the subfloor void. I have just replaced joists in a 200 year old house which were resting on the ground and rotted through, with shallower treated timber joists with a shorter span to allow for a gap between the...

Any electricians or those knowledgeable on electrics able to comment on this? I have done a fair bit of searching to get some guidance on this but the advice on dealing with insulation and electrical cables seems really vague, which is surprising considering that almost all houses now have...

Thanks Wayners, appreciate the response but I am fine on how to attached the plasterboard, and rockwool around the cables is still burying them in insulation. I'd hoped one of the electricians would be along to comment on whether there was any guidance in this situation.

Hi Wayners, It was me who put the insulation in there and left a gap around on either side. These cables were previously buried under lath an plaster and what's behind them is the very old plaster direct to stone that would have been the finish before the lath and plaster went on. I've pulled...

Hi, Couple of questions relating to insulation and power cables, grateful for any advice. I have pulled down the old plaster in a room and I am insulating internally, but at the section in the picture there are a large number of power cables running together from the meter/consumer unit...

Thanks John.