What's your humidity at home?

jk0

Waldir wrote: »

Thanks DRP!

Always_sunny, I found this "calculator" useful: http://www.dpcalc.org/
You can set temperature and %relative humidity, and see the "mold risk" and "days to mold" on the right.

Now if I could only get my tenants to use that.

It's a pipe dream though. Most can barely be persuaded to put the salt I supply in their water softener.

Grenage

Winter had us sitting in the high 60s to low 70s; we always open windows for fresh air, and never get any mould. We had a bathroom extractor, but nothing in the kitchen; no problems anywhere.

dominoman

Usually around 65-70 in Summer, and around 60 in winter.

After a humid rainy day it sometimes gets up to 78 or so.

We use a dehumidifier in the bedroom because we used to get mould on the outside walls (single brick uninsulated). It is set to keep the humidity down to about 60 so kicks in for a few hours in the morning.

We keep the dehumidifier on a timer because we dont want it on at night because it is not so silent.

DRP

always_sunny wrote: »

It's interesting that the mould risk is only after 65% humidity and takes 2 months to form?

DRP - someone suggested PVA to seal the walls, but wouldn't that prevent the air-bricks to let air in?

Hi always_sunny

I think we might be taking at cross purposes here - the airbricks would be located so that they ventilate the space under the floorboards.

I'm not sure how or why PVA could be used to block airbricks?

In any case I don't think it is a good idea to paint PVA onto a damp wall - you need to solve the cause of the damp, rather than try to conceal it.