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Mould in the Attic

Costs a lot to fix

captainbirdseye
post 22.Nov.2012, 02:18 PM
Post #1
Joined: 28.Jan.2007

Hi,

Me and the girlfriend are in the process of buying a house. In the besiktningsprotokoll (building survey in English?) it was noted that there was mould on the wood in the attic. We had a mould specialist round today to check out the source of the problem, what needed to be done, and what the cost would be to remedy it. We were quoted that it would cost between 150,000kr to 200,000kr. This would include removal all the old insolation, dry ice blasting all the wood, installing new insolation and boarding up the floor for easier access. Is it just me or does this sound like a lot of Money to do this? Has anybody else had this done? The house is just your typical Swedish villa about 80m2 on the ground floor.

The tiles on the roof will need to be replaced in the next few years, so we are thinking it might cost effective to replace the whole roof. Has anybody had their roof replaced, if so how much would we be looking at?

Thanks,
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skogsbo
post 22.Nov.2012, 03:29 PM
Post #2
Joined: 20.Sep.2011

if the mould is what is nick named 'dry rot', a kind of whitish / yellow spread over the surface of the wood, then I'd be tempted to just find another house. Unless it's too late. It spreads through the wood internally and externally and could have spread much further than is visible. Hence the extensive treatment and replacement of wood. 200,000kr is not extreme in treating dry rot.

Note, whilst called dry rot, it needs damp wood to grow. So the roof probably leaks a bit and their must not be very good ventilation up there.
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captainbirdseye
post 22.Nov.2012, 03:51 PM
Post #3
Joined: 28.Jan.2007

It is just black mold. According to the mould guy it is moisture coming from the below and poor ventilation in the loft space. Just seems like a crazy price do work only in the attic. Ther would be no replacment of wood or anything like that. Only remove insulation, blast the mould then install new insulation.
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Svensksmith
post 22.Nov.2012, 03:52 PM
Post #4
Joined: 28.Jul.2011

Sounds like you are going to have to replace the roof anyway. Perhaps it would be cheaper to do it all at once...or, as Skogsbo says, look for another house.
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Gamla Hälsingebock
post 22.Nov.2012, 04:33 PM
Post #5
Joined: 21.Dec.2006

Do you know if it is only the attic?

What about the walls just below the attic?

Why take on a house with such visible problems?

There may be more, unseen...how much will the owner be willing to cut from his asking price to allow these repairs to be made...if anything?

Maybe another house with no apparent problems would be a better option for you.

Good luck
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Pursuivant
post 23.Nov.2012, 12:51 PM
Post #6
Joined: 12.Aug.2008

If you choose to get the money pit, make sure you fix the original problem - bad ventilation - by installing ventilation hatches. Draft is good in the right place.
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Hisingen
post 23.Nov.2012, 02:17 PM
Post #7
Location: Västra Götaland
Joined: 5.Jul.2012

Mould likes moisture, darkness and warmth usually, to grow. As Pursuivant says, draught in the right place is a good deterrent. But others have recommended looking for a mould-free property, and that is truly the best advice of all.
The stuff is very difficult to fight, and once into a house, you simply don't know how far it has travelled. The cost mentioned to eradicate the problem would be far better spent on a mould-free property.
No matter how taken you are, don't let your heart rule your head in this matter. It is far too costly.
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captainbirdseye
post 23.Nov.2012, 03:19 PM
Post #8
Joined: 28.Jan.2007

Thanks for the advice guys.

The seller is prepared to drop the price in order to get this fixed. We had a full survey of the house and everything is in good condition apart from a few minor things here and there. The mould inspector believes that it was a slow build up of mould over the years and the work qutoted will eradicate and prevent mould issues in future.
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Pursuivant
post 23.Nov.2012, 03:25 PM
Post #9
Joined: 12.Aug.2008

Then again, reading the news about the 200 kilos of pigeon shit in the belfry attic - you need to secure your ventilation hatches (wire mesh) and check the attic from time to time.

One thing people in the 70's 80's did was to put plastic sheeting and hard rock wool everyplace. Plastic membrane and rock wool = growing stuff, it never dries. What you want is old tar paper and cellulose "blow wool" and have the attic "breathe"... if you have walls plastified its a hit and miss. Also, if the attic is like that what is the floor like? Is it directly on a concrete slab, one with a cellar, or is it a wood floor and a crawlspace under? usually the old style of making a crawlspace meant the wood floor was ventilated... then it was all too cold so they did the same "bottling up" - the ground moisture can't escape and the floor is... urrrggghhh...
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