mould and condensation since stove installations

jameser123

since i installed a 8 kw room heater stove, i have a serious problem of mould growing on bedroom walls and windows dripping condensation, in the house 9 years and never a problem until the stove got installed, theres no more heat in the bedrroms , in fact its the same heat through out the house just the stove is warming 2-3 rooms itself,

a few other people who fitted stove recently have the exact same problem , in fact worse,
so its def something to do with the stove
the mould starts where insulation would be poor, ie top corners or the room, if there was a bit of insulation missing on the ceilng, window reveals,

the windows have the curtains and blinds ruined, constanly getting wet

now its not a problem the last 3-4 week as outside not as cold,
but why is it happening since the stove is installed??
yes there are vents,
is it something to do with the stove drying the air too much
or producing extra moisture in the air
bring down humidity in 1 room causing extra humidity somewhere else.
i v ordered a humidity meter to see what the readings are
anyone else have this problem,
causes, solutions

MicktheMan

jameser123 wrote: »

but why is it happening since the stove is installed??

Before the stove was installed I'm assuming there was a standard open fire with an 8" flue.
This flue ventilated the house sufficiently (along with other wall/window vents) to prevent condensation and mould. By installing the stove, this 8" open flue is now significantly reduced and this has reduced the house ventilation to the point that the moisture in the air is no longer being ventilated to the outside sufficiently. This extra moisture is now condensing on the colder surfaces in the house and generally shows up first on the north and east side of the house.
To solve the problem, better ventilation is required. How to do this efficiently depends on the house and an on-site assessment would be required but some sort of continuous background mechanical system is generally recommended.

tred

MicktheMan wrote: »

Before the stove was installed I'm assuming there was a standard open fire with an 8" flue.
This flue ventilated the house sufficiently (along with other wall/window vents) to prevent condensation and mould. By installing the stove, this 8" open flue is now significantly reduced and this has reduced the house ventilation to the point that the moisture in the air is no longer being ventilated to the outside sufficiently. This extra moisture is now condensing on the colder surfaces in the house and generally shows up first on the north and east side of the house.
To solve the problem, better ventilation is required. How to do this efficiently depends on the house and an on-site assessment would be required but some sort of continuous background mechanical system is generally recommended.

exactly the problem......ventilate ventilate ventilate....if you understand the conditions that causes mold to form..you'll understand how ventilation resolves it.

Gunslinger99

Hi Jameser123 had the exact same problem at home couldnt figure it out, had to get a fitted wardrobe moved because of mold. When the lads were out they checked the vents for me - took off the grills for a good look like. Well behind some grills were what could only be described as pinholes for ventilation, others were stuffed full of plaster and builders waste. Since they were clearded problem has gone away. Check all your vents is my advice good luck

bungaro79

hi guys,
sorry to resurrect an old thread but this seems like an issue we have just begun to have in a house we're not long in. there is a sunroom off our kitchen (the two rooms make an L shape) and there is a stove in the conservatory. we got a trickle vent installed in one of the windows but there isn't really scope (or budget) for putting a hole in the wall. we try to open the windows out here as much as we can but we lit the stove for the first time over the weekend and a few spots of mould appeared on the door frame. from other threads on here, i'm thinking its a humidity and ventilation issue. since more ventilation isn't really an option, should i look into getting a dehumidifier for the room??
thanks