Heat Recovery Ventilation System?

marshallka

dampdaveski wrote: »

my pleasure, nice to be appreciated:j
hope it goes well

Just told my friends who also has the same probs in their bungalow. Seems bungalows with cavity wall can be prone to this. They ripped the wardrobes out and still have condensation so they are also looking into it now.;)

arty68

Hello,

To hijack the thread a liitle bit ...

I'm building a house and was thinking of having HRV has anyone any recommendations of systems and a rough idea of how much it should cost. The house is approx 150m2 internal area.

Cheers..

marshallka

arty68 wrote: »

Hello,

To hijack the thread a liitle bit ...

I'm building a house and was thinking of having HRV has anyone any recommendations of systems and a rough idea of how much it should cost. The house is approx 150m2 internal area.

Cheers..

I have been looking into these too but my hubby is an electrician and could fit ours himself but looks to be about £250 to buy the unit and then about £100 to ask an electrician to install. I have seen lots of sites that say about £650 to supply and install.

Hope that helps


BTW we have bigger probs now as I have just emptied my wardrobe and there is a large bottom patch of rising damp by the looks of it. I have checked the brick work outside where it is and its green and looking at the piccies on google its ours. We had someone round years ago to check for damp as this problem has been ongoing and they said it was OK but clearly not. They did however paint all our house in something that cost us over £1000 and gave us a lifetime guarantee and have tried to find the company and looks like they gone bump.:mad: Its the wall that attaches to next door and its only one large patch and the bottom of the brickwork. Also we have been noticing a white patchy appearance around the whole house (except the front which is rendered). I assume from reading further into this its salt deposits. I have always assumed its where I bleach cause of the doggies. I have also always assumed this was condensation cause we fill a dehumidifier every couple of days and we get black mould too. We are having someone round this evening to look at the guttering etc but looks like we have even bigger probs now.

arty68

Oh dear sounds nasty,remember things often look worst than they are.

I'm not sure we are tslking about the same things though the units I've seen cost about £1000 ish.

??

gmgmgm

I know you've been trying everything for 14 years, but can you just set my mind at rest by confirming you do KEEP windows open and have EXCELLENT ventilation ALL OF THE TIME?

Dogs cool themselves by evaporation (yes, as do humans :-) ) and you'll get even more moisture in the air from them. It sounds as if you have several.

I've looked at these heat-recovery fans in the past, and it was much better value to keep a window open and expect to spend a few £ more on heating per year.

marshallka

gmgmgm wrote: »

I know you've been trying everything for 14 years, but can you just set my mind at rest by confirming you do KEEP windows open and have EXCELLENT ventilation ALL OF THE TIME?

Dogs cool themselves by evaporation (yes, as do humans :-) ) and you'll get even more moisture in the air from them. It sounds as if you have several.

I've looked at these heat-recovery fans in the past, and it was much better value to keep a window open and expect to spend a few £ more on heating per year.

We keep the windows open in the day (everyday) although it can actually cause more probs so I have researched BUT it smells of musty so I always have for that, yes, but not all night as well cause of the cost of heating and creepies. We have had someone out tonight about the soffits etc and they are doing those for us and say that it SHOULD cure the black mould and help with the condensation too but we still have this rising damp problem. I am going to ring our council tomorrow so we are not ripped off over it and get them to recommend someone. After all this is sorted i shall get one of the units cause so many around here have the same problem.

Opening windows does not cure condensation probs as if it did we would not collect so much water in our dehumidifier. We run that all day 24 hours a day as we have to. We know a lot about "water" probs and have tried absolutely everything but now its got too bad and we are suffering cause of it. With the dehumidifier the air can become TOO dry (although it does cut off automatically) and one of these units actually solves the condesation before it happens in the house hopefully. Also the vents in the new soffits, eaves should help too. I really hope so as we have suffered and wasted so much money on this for too long.

dampdaveski

Arty look on the nuaire and envirovent websites for heat recovery options
Marsh,
If you have mould growing at low level on your walls, it is extremely unlikely those walls will be affected by rising damp, mould cannot grow on a wall affected by rising damp (unless there is an impervious covering between the wall and the mould). that is a simple botanical fact, if a damproofing company says mould growth is due to rising damp they are a) stupid inbreds or b) trying to defraud you or c) a&b

As for keeping your window open and spending extra money on heating - well i'm not even going to comment on that remark!

Green algae isn't a sign of rising damp marsh, it's more likely to be a leaking gutter or just a north facing wall
Bad condensation problems can imitate rising damp. I had a case last week where I was called out to sort out a dispute between a large national house building firm and the NHBC.
My suggestion is to get the condensation problem under control and see what problems are left once that's dealt with
;-)

marshallka

dampdaveski wrote: »

Arty look on the nuaire and envirovent websites for heat recovery options
Marsh,
If you have mould growing at low level on your walls, it is extremely unlikely those walls will be affected by rising damp, mould cannot grow on a wall affected by rising damp (unless there is an impervious covering between the wall and the mould). that is a simple botanical fact, if a damproofing company says mould growth is due to rising damp they are a) stupid inbreds or b) trying to defraud you or c) a&b

As for keeping your window open and spending extra money on heating - well i'm not even going to comment on that remark!

Green algae isn't a sign of rising damp marsh, it's more likely to be a leaking gutter or just a north facing wall
Bad condensation problems can imitate rising damp. I had a case last week where I was called out to sort out a dispute between a large national house building firm and the NHBC.
My suggestion is to get the condensation problem under control and see what problems are left once that's dealt with
;-)

Mine is like this

http://images.google.co.uk/imgres?imgurl=http://www.heritage-house.org/assets/images/damp/dampwall.jpg&imgrefurl=http://www.heritage-house.org/&usg=__3LECx6nz_vSV78jt4IKDWTNRYGs=&h=367&w=550&sz=167&hl=en&start=13&um=1&tbnid=DpMekNrFhatObM:&tbnh=89&tbnw=133&prev=/images%3Fq%3Drising%2Bdamp%2Blower%2Bbrick%26hl%3Den%26sa%3DG%26um%3D1


But not bad brickwork like the above. I am ringing the council to see if they can recommend someone that will not rip us off as we have to find the actual problem for definate. We are sick of being told one thing and then another. We did have a damp specialist round years ago who said it definately was not rising damp but it was not this bad and then now its creeping up the wall (exterior)and my wardrobe (interior on the other side from where the green on the wall is) is bad. I hope you are right and it is condensation. That would be easily solvable (and i want one of these units installed) and also having the new breathable vents in the eaves etc will certainly help. She took a look at the black mould in the top corners of our bedrooms and said it will almost certainly solve that problem.

Getting the soffits, eaves and guttering down and completely removed and vented etc. Its costing a little more but worth a try. They are coming within the next couple of weeks to do it.

Our house is built on clay soil which can be a problem and we did have an extremely bad problem with water on the lawn but had drains put in the garden a few years back and the garden landscaped. It has solved that one and its not from these drains that there is a problem. In fact its the corner of our house that joins next door. We really need to get to the bottom of it though as cannot go on like this.

Thanks again.:beer:

dampdaveski

Hi Marsh,
If you want to get someone out try the PCA www.propertycare.org
However I still think you should solve the condensation problem and see what is left to deal with (ie if there is rising damp)
I suspect there won't be (easy to say I know when I havn't seen it)
If your house is like most of the similar problems I deal with I think fitting a drimaster unit (or similar) allowing to dry out a bit, sterilising with a bit of mould killer and that will be the extent of the works necessary.
Incidentally the drimaster 2000's are on offer at the mo off the site I mentioned earlier in the thread:money:

regards
Dave

marshallka

dampdaveski wrote: »

Hi Marsh,
If you want to get someone out try the PCA www.propertycare.org
However I still think you should solve the condensation problem and see what is left to deal with (ie if there is rising damp)
I suspect there won't be (easy to say I know when I havn't seen it)
If your house is like most of the similar problems I deal with I think fitting a drimaster unit (or similar) allowing to dry out a bit, sterilising with a bit of mould killer and that will be the extent of the works necessary.
Incidentally the drimaster 2000's are on offer at the mo off the site I mentioned earlier in the thread:money:

regards
Dave

You are so helpful and many thanks again.

Can I ask one more question?? What about the one with a heater?? Is that one better here
Drimaster with integrated heater


:beer::beer: