Mould issue

spikeydog11

Hi all

we recently purchased a 3 bed 1970s bungalow no insulation , spend the last few months of winter in the house very cold even With the heating on and a terrible mould issue

during the summer we added triple glazed windows and rhino insulated and triple glazed doors and had attic insulated and the walls pumped with kore bead

and vents in all the rooms

we now have mould in places we never had before it’s fair bad no damp patches on the walls

any ideas what the next step is to try and eliminate the issue thanks .

Lenar3556

It would need to be investigated, but the first (and easiest) thing I would look at is ventilation.

Are there 4” vents to outside? Are they open and unobstructed? Try leaving some windows open a little on the ventilation lock setting for a few weeks and see does that improve the issue. The mould should be treated in the first instance with a bleach and water solution.

Another consideration could be that the pump fill cavity insulation is serving as a medium to carry moisture from the outside to inside block. Prior to this there would have been good air circulation within the cavity which you won’t have now.

I think experiment with adding additional ventilation first, together with some heat and see what the effect of this is before going any further.

spikeydog11

Afternoon , thank your for the reply

the vents were installed with the cavity wall pump , in every room

i will try windows open during the day we are quite rural I’m quite nervous about little furry things coming in the windows we’ve had a bit of an issue in general in that front ,

I was looking at HRV system

in the spring if we can’t resolve issue

is it a local builder or a specific trades person who deals with this kind of issue (mould) ?

10-10-20

If you're not a fan of leaving the windows open then maybe a dehumidifier would suit you better?

https://www.boards.ie/discussion/comment/121096670#Comment_121096670

ottolwinner

get some hygrometers and pop one in each room. Cheap on eBay. They will give you an idea of the moisture levels in each room.

i had a similar issue and got a good system installed that has changed everything for me. Look up envirovent and do some research on it.

windowcills

Another thing that happens if you are near a hill is micro springs can appear under the floor boards, making it impossibal to reduce the humidity

Acosta

I would recommend a good air purifier and dehumidifier.

XsApollo

A good dehumidifier is great, don’t skimp on it either, and get one big enough.

also get a desiccant one, the are better in colder weather and can also warm the place up a bit.