Ex-Council Leasehold top floor flat condensation issues?

Ex-Council Leasehold top floor flat condensation issues?

14:42 PM, 19th December 2019, About 5 years ago 12

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We are having serious condensation issues in the Ex-Council Leasehold top floor flat. The Bathroom has a fan, but the ceiling is very wet, over the bathroom, bedroom and kitchen. As my flat is on the top floor and it has pitched roof.

The pitched roof is NOT insulated at all, I can see the tiles from inside and water drops from condensation are constantly dripping. I have wool insulation in the ceiling, but it’s not helping.

I have called a few builders and they have advised that Council must sort this out. As pitched roof is owned and maintained by the landlord (local council’s).
I have sent them few emails to the council, but had no response.

The tenants are struggling, has anyone experienced the same situation? What should I do?

Thank you

Sohail


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reader

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7:59 AM, 20th December 2019, About 5 years ago

An independent survey of the roof and the roof void would seem a sensible initial step. You could use it as factual basis to persuade the council to fix the problem.

It seems an awful lot of moisture to be solely caused by roof condensation which if it is that is relatively simple to fix.

Rennie

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8:48 AM, 20th December 2019, About 5 years ago

Is the paint on the ceilings preventing the transmission and evaporation of moisture?

Rob Crawford

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15:08 PM, 20th December 2019, About 5 years ago

I would renovate it to a reasonable condition and sell asap!

Sohail Akram

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8:02 AM, 21st December 2019, About 5 years ago

Reply to the comment left by Rennie at 20/12/2019 - 08:48Yes I have special paint on the ceiling and it is stoping the black mould but water drops are forming on the ceiling.

reader

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9:23 AM, 21st December 2019, About 5 years ago

A silly question but how wet is the plaster board in the loft side and similarly how wet is the insulation above it i.e. on the exposed side of the insulation?

The answer might indicate where the moisture is coming form the roof or the bathrrom.

I did note you saying you could see the tiles/slates from the roof void. In older properties there is sometimes no 'felt' type barrier under the tiles/slates. If so it could be simply water penetration through the roof. You really do need an independent RICS survey if that is the case.

Rennie

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9:32 AM, 21st December 2019, About 5 years ago

Reply to the comment left by Sohail Akram at 21/12/2019 - 08:02
The reason I asked about the ceiling paint is that I never had any problems in the bathroom until I put scrubbable paint on the walls. There is a big window in there that opens wide but a lot of tenants don't open it so I got a load of condensation on the walls and they started to turn a funny pinky colour too

Jireh Homes

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3:05 AM, 22nd December 2019, About 5 years ago

Hi Sohail - although you mention an extractor fan, many "bathrooms fans" are simply not powerful enough to remove generated moisture or not run long enough. Perhaps upgrade to a larger flowrate with an overrun timer. And check the ducting run, as if too small or long will have an adverse effect on the extraction rate. Allan

Sohail Akram

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7:54 AM, 22nd December 2019, About 5 years ago

Thank you very much for your comments. I have decided on the advise of a wise builder that inside the pitch I will install PIR insulation 125mm boards and on the inside floors extra loft insulation.
Cost of £600 all inc and hopefully it will resolve the issues.
Thank you

reader

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8:25 AM, 22nd December 2019, About 5 years ago

I am glad you think you have the result you want. Just a warning though. Lofts have to have a balance of insulation v ventilation. It is achieving both those things that will make the void dry, subject of course to the roof being water tight.

JohnsonD

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6:13 AM, 24th December 2019, About 5 years ago

I agree. Pay for a professional survey to be done to assess the roof. It sounds a very excessive amount of water to be coming just from condensation on the roof tiles. To aid condensation, the roof should be well ventilated at the eaves, ensuring rockwool isn't blocking this ventilation path. Alternatively ventilated roof tiles should be installed. Is there a white membrane between the slate/tile and the roof void?

Insulate the underside of the bathroom ceiling with 50mm of kingspan and re-board it with foil backed plasterboard. Upgrade the existing fan and vacuum and clean out the duct pipe. I've just replaced all of my extractor fans, including the one in my own bathroom and it has completely irradiated condensation including on the tiles, they're bone dry after a hot bath or shower! This is the fan to buy, it has a higher extraction rate than others on the market of the same size and the humidistat override is what is preventing the build up of condensation. I seriously cannot recommend these fans more highly, the difference compared to the 10 year old manrose fan is STARK! Good luck with it!

https://www.amazon.co.uk/Envirovent-100-HT/dp/B00E7UXIVM/ref=sr_1_2?keywords=envirovent&qid=1577167895&sr=8-2

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