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by nhpendall
Thu Oct 13, 2016 6:09 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Passive Ventilation to Cure Mould and Salt Issues
Replies: 6
Views: 5192

Re: Passive Ventilation to Cure Mould and Salt Issues

if wall had got really saturated it could take months for it to dry out and if outside render painted then it harder for the moisture to get out that way. I would be inclined to do as you say, clean it off - leave bare to aid moisture escape then monitor it for a month or two. you could get an elect...
by nhpendall
Wed Oct 12, 2016 6:42 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Passive Ventilation to Cure Mould and Salt Issues
Replies: 6
Views: 5192

Re: Passive Ventilation to Cure Mould and Salt Issues

when did they do the DPC and what method was used. Do you have a condensation problem anywhere else in the house?. Salts coming out of the wall really does not sound like an internal humidity issue. When they did the DPC they should have removed the internal plaster for a couple of feet up from the ...
by nhpendall
Tue Oct 11, 2016 6:36 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Passive Ventilation to Cure Mould and Salt Issues
Replies: 6
Views: 5192

Re: Passive Ventilation to Cure Mould and Salt Issues

can you supply a bit more information. e.g. age of house, cavity wall or solid. vent shown is basically a big trickle vent and may help a bit but i think you need to get to the real root of the problem. mould and salt deposits inside a living room would suggest a damp proof course problem in the wal...
by nhpendall
Mon Oct 10, 2016 6:53 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Bathroom Condensation Problem That's Destroying Ceiling
Replies: 1
Views: 2309

Re: Bathroom Condensation Problem That's Destroying Ceiling

from the pattern on the ceuling looks like there is a coldspot at that point. check the insulation at that point if you can get to it as there is probably a gap in the isulation there. You should have 270mm of insulation these days. The towel rail is not causing the problem. ultimately the problem i...
by nhpendall
Sun Oct 09, 2016 7:41 am
Forum: Insulation Forum
Topic: Insulating a loft with only 70mm high joists!!! Please Help!
Replies: 3
Views: 7633

Re: Insulating a loft with only 70mm high joists!!! Please Help!

you need to be careful about storing a lot of stuff in an 1890 loft space without first strengthening the roof/joists. have you got slates on the roof or concrete tiles ?. many originally slate roofed houses had their perfectly good slates removed as part of the mortgage conditions in the 1970's and...
by nhpendall
Sat Oct 08, 2016 11:22 am
Forum: Insulation Forum
Topic: Insulation From the Inside Without Putting Insulation in Cavity
Replies: 2
Views: 3124

Re: Insulation From the Inside Without Putting Insulation in Cavity

While it is quite possible to insulate walls inside a house (or outside) rather than in the cavity where there is a cavity its a bit of a no brainer to use it as cavity insulation is cheap and very cost effective. But always do the roof first as that is where you get the best cost benefit.whether it...
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