Mold in sons wardrobe 3rd floor victorian house.

[devs]

Cheers Dave, yes I have a couple of those sensors. I’ll move one in there and check the readings. Just struggling to envisage what insulation to use

 

[Dave B1]

Cheers Dave, yes I have a couple of those sensors. I’ll move one in there and check the readings. Just struggling to envisage what insulation to use

That's great, be interesting to know what readings you get?

 

[robinbanks]

Strive to keep surfaces above 14 degrees C, and absent any better option, encourage a flow of fresh air from the world (recently) through the room

Insulation wise, at least 50mm PIR board, joints taped, plasterboard over. Probably easiest to mount with plasterboard adhesive foam.

 

[Koolpc]

Er, you mean the 3mm thick "insulated" liner?

Nearly a complete waste of money IMO; put the cash towards a decent thickness of PIR instead

Worked for me. Kept the wall from being very cold. No condensation since.

If you want to insulate the room for energy purposes then yes, put thicker insulation on!

 

[Koolpc]

Strive to keep surfaces above 14 degrees C, and absent any better option, encourage a flow of fresh air from the world (recently) through the room

Insulation wise, at least 50mm PIR board, joints taped, plasterboard over. Probably easiest to mount with plasterboard adhesive foam.

Very excessive for what is required. Its only the inside of a wardrobe!!

 

[Harry Bloomfield]

I wonder if it might be worth adding some ventilation holes, in the wardrobe.

 

[robinbanks]

Very excessive for what is required. Its only the inside of a wardrobe!!

The implication being that the wall should be insulated, and well

 

[Koolpc]

The implication being that the wall should be insulated, and well

Not needed in this instance. Not 50mm anyway.

 

[robinbanks]

Nearly every house in Britain needs at least 50mm.. Times have moved on. Regs have moved on. That houses are allowed to remain compliant with the regs as they were when built does nothing to help meet energy reductions/emissions/fossil consumption targets, nor does it do any favours for the wallets of the occupants

 

[devs]

thanks again chaps, so the humidity reading in the room this morning was 65%

Should have mentioned the original house has been pushed out at the back where this room is and has a cavity wall that is bead filled.

I’m tempted to add a couple of ventilation holes but am unsure what depth to drill and if I need to exit to the outside or just into the cavity? (Fear blowing the bricks and making a mess).

As mentioned previously there are a couple of holes near the problem area with plastic pipes in. (Photo above) is this likely to indicate a damp gel being used?

Thanks

 

[Dave B1]

thanks again chaps, so the humidity reading in the room this morning was 65%

Should have mentioned the original house has been pushed out at the back where this room is and has a cavity wall that is bead filled.

I’m tempted to add a couple of ventilation holes but am unsure what depth to drill and if I need to exit to the outside or just into the cavity? (Fear blowing the bricks and making a mess).

As mentioned previously there are a couple of holes near the problem area with plastic pipes in. (Photo above) is this likely to indicate a damp gel being used?

Thanks

I'm certainly no expert but I have heard that some cavity wall insulation can cause damp problems. 65% humidity sounds a bit high especially if you say you've got a dehumidifier in the room.

 

[devs]

Yea the 65% was a morning reading prior to using the dehumidifier. I can get it down to a 50% range with

 

[Dave B1]

Yea the 65% was a morning reading prior to using the dehumidifier. I can get it down to a 50% range with

Ok, that doesn't sound too bad as long as it doesn't go over 70%

 

[Harry Bloomfield]

I'm certainly no expert but I have heard that some cavity wall insulation can cause damp problems. 65% humidity sounds a bit high especially if you say you've got a dehumidifier in the room.

This is our indoor and outdoor humidity graph, for the past couple of days. Green indoor, blue outdoor levels. As I keep repeating - we have no mould, or damp anywhere. At times, I have seen it creep up to over 70%, so I don't think the level of humidity is the entire story. Temperatures, and wall temperatures, are also a factor to be taken into account, as well as air flow.