ventilation

I live in a 1950's house which does have a few damp issues upstairs in the bedrooms. Generally mold grows on the external walls in the corners and on the celling at the near this external wall. The celling slops down towards the external walls. Before anyone talks about mold prevention, I have...

Hi, I hired a company to supply and install an MVHR system in my bungalow, and to say I have significant concerns about their performance is an understatement! Some of it I know enough about and am picking up with them (e.g. the 'fixes' to holes they've made), but I'm concerned about the...

First time poster and rather new to DIYing so please go easy on me. I noticed that when lifting up floorboards on my new 1930s property, that there were some large damp patches on the concrete foundation towards the rear of the property. On closer investigation I found that whomever had...

Hello, in our utility room we have ventilation holes above the boiler, but are thinking of putting in an extractor fan in this same place to get better ventilation. Externally the outlets (flue and fan) will be more than 30cm apart. However is this arrangement ok internally - i.e. installing the...

Hi Everyone, I am exploring MVHR units and on the cusp of instructing Elite Renewables (based in Croydon), but I’m trying to find somewhere that I can listen to a system in operation. I’m based in Berkshire but at the moment the only system I could potentially get to is at their offices, which...

Hi all, We live in a Victorian semi. Double glazed but otherwise poorly insulated. Centrally heated with a modern loft conversion. We get pretty bad condensation on the middle floor bedroom windows and on the bathroom walls (despite an extractor fan) and this tends to grow mould. Humidity can...

Hello, I am renovating my 1950s bungalow with a suspended timber floor. As you can see in the photo I've stripped the floors down to the joists, with a composition of external cavity walls, timber joists, a small sleeper wall, and air vents. I'm shortly looking to get started putting everything...

I live in an 1860s cottage, we have a porch extension built around 30 years ago, which has a ventilation issue resulting is a buildup of mould and general damp feeling throughout the winter. I'm about to renovate the porch and part of this will be looking at installing some kind of ventilation...

hi I have recently noticed a lot of water droplets in the loft mostly directly under the bathroom as well as mould near soffit vents when opening bathroom window. anyone know the cause of this ? can it be that the hot steam when showering having window open is traveling straight through...

It’s time to make the cut across the ridge of the breather membrane… cassette roof construction ie; tiles, batten, counter batten, membrane, osb, 50mm air gap, rigid insulation, osb. However it just doesn’t quite feel right after working so hard to protect the building and keep water out. I...

Hi All, A quick question which i hope has a straightforward answer. We have a cold/open/vented loft. Air comes in via the soffits below the rafers at floor level. I've insulated the floor to recommended standards and boarded, being careful to leave adequate space around the edges so...

Hi, I'm looking for advice on a fireplace we have inherited, we organised a service and the engineer said ventilation was a required, transpires this has been blocked up since 2005. We had a copy of the last gas service completed by the previous owner on which 'Ventilation' was marked as pass...

Hi, We had a new patio laid a couple of years ago. We had some concerns at the time (sandstone slabs laid on a ring bed of cement not a full bed), slabs too high v damp proof course and air bricks, slabs built right up to house walls. We've started to get a lot of woodlice in the house and are...

My neighbors kitchen extract vent is beside the flat roof of my ground floor extension and the smells can somehow be smelt inside one room of my house. I closed all windows and trickle vents but found that in one corner of the room the smell was literally coming up through the floor. I know that...

Hi, was hoping for some advice We are in a 1930s semi which has always struggled a bit with moisture and is very prone to mould forming. We are currently having a loft conversion done and it prompted me to think about solutions. Once seems to be PIV however we are obviously losing the majority...

I am converting an old outhouse into a bedroom. This is a single room building apart from a small enclosed WC within the room. It is 13’x13’ with a solid double brick wall and slate roof. There is a door entrance, an opening window in the WC and an opening skylight in the vaulted roof. 4x2 stud...

Hi all My en suite (right of picture) is completely ‘internal’ - there’s no exterior walls. It’s right in the middle of my flat, and has zero ventilation. It’s a period conversion, I’m on the ground floor and there’s 2 flats above me, so venting ‘upwards’ isn’t an option. The closest...

Dear forum members! Would you be so kind and help me understand the actual difference between the following multi-vent offerings on the UK market? They are of identical dimensions and almost identical design. But the prices are very different (£30, £120 and £220)! What's the catch? Isn't...

Moved in 2 years ago, and had condensation issues in winter, in the rooms with external walls (rooms which have the the four corners of the house). Would an air vent fix this issue, also I was thinking of a hit and miss vent in each of the rooms, but fitting an air brick would be difficult to do...

Morning all, Next problem to tackle. Old chimney was rendered years ago ( not sure when) and I had it stormdried 2 months ago but water is still tracking through the brick work and then running down the face inside the loft. 100% sure it is not a problem with the roof all soakers in place...