Mould and dampness

etd21d22d24

Hi all wonder could anyone help me.I have black mould on wall in hall and bedrooms,and bathroom.There are no vents in the house.I was told that the reason the mould is there is because the house has not got vents.The question I want to ask is what are the best vents to get for the house and does anyone know any good builders who would put them in

Carpenter

Where are you based and how old is the house PM me if you want .

MicktheMan

etd21d22d24 wrote: »

The question I want to ask is what are the best vents to get for the house and does anyone know any good builders who would put them in

Research Mechanical Extract Ventilation (MEV) or Demand Control Ventilation (DCV)

phormium

Can't be as simple as that, I have no vents anywhere, and no mould or damp in the house, built in 1991 if that matters. Before you go making holes in the walls I'd look into it more.

MicktheMan

phormium wrote: »

Can't be as simple as that, I have no vents anywhere, and no mould or damp in the house, built in 1991 if that matters. Before you go making holes in the walls I'd look into it more.

Why not??
Every house is different. Maybe you don't have the problem because your house is leaking air like a sieve, and is therefore "naturally ventilated" sufficiently.
As ventilation is one of the three critical factors needed to avoid damp and mould, it is very conceivable that this is the issue.
But you're right, in that, to be sure what is going on, further investigation may be warranted.

PS: there are far better ways of ventilating a house than "hole in the wall" vents

etd21d22d24

Carpenter wrote: »

Where are you based and how old is the house PM me if you want .

In palmers town,think house is abt 30years not sure but has no vents

dodzy

etd21d22d24 wrote: »

In palmers town,think house is abt 30years not sure but has no vents

Are you drying clothes on radiators ? Clothes rails ? within the home ? This is a terrible promoter of mould, although understandably unavoidable at this time of year if you do not have a tumble dryer.

bonzodog2

MicktheMan wrote: »

PS: there are far better ways of ventilating a house than "hole in the wall" vents

Could you elaborate please?

Stoner

Lindab

Unit 2B, Nangor Road Business Park, Dublin 12
(01) 456 8200





They have a decent ventilation system it's a big job adding it, but I attended a training day with them once. This type of system is very good.

Vast majority of mould in houses is down to poor ventilation.
As advised above look into
Heat Recovery Ventilation (MHRV) Demand Control Ventilation (DCV)

MicktheMan

bonzodog2 wrote: »

Could you elaborate please?

here, for example

MicktheMan wrote: »

Research Mechanical Extract Ventilation (MEV) or Demand Control Ventilation (DCV)

marsbar1

MicktheMan wrote: »

Why not??
Every house is different. Maybe you don't have the problem because your house is leaking air like a sieve, and is therefore "naturally ventilated" sufficiently.
As ventilation is one of the three critical factors needed to avoid damp and mould, it is very conceivable that this is the issue.
But you're right, in that, to be sure what is going on, further investigation may be warranted.

PS: there are far better ways of ventilating a house than "hole in the wall" vents

I agree, when I lit the fire in a house I got up on a chair to change one of the halogen lights in the kitchen ceiling. Even with the fitting back in there I could feel cold air leaking being sucked around the fitting. There's an upstairs above the kitchen. God knows where that air was coming from! I totally agree that having a vent in every room is complete overkill!