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What to do with "inadequate ventilation to main roof vo

 
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tan



Joined: 10 Aug 2007
Posts: 5
Location: Coventry
PostPosted: Sun Aug 12, 2007 9:25 pm    Post subject: What to do with "inadequate ventilation to main roof vo Reply with quote
Hi!

I've done a home-buyer's survey on a 70's house that I'm interested in and there is a minor point highlighted by the surveyor under the section Condensation & Insulation:
Quote:
Current Building Regulations require insulated and underfelted roofs to be provided with ventilation to prevent condensation within the roof void. In severe cases this can result in decay to timbers and damage to internal decorations. There is inadequate ventilation to the main roof void, which can lead to internal deterioration of timbers due to condensation. This should ideally be rectified.

What kind of rectification work should be done (if at all)?
Any idea of the costs involved?

Thanks in advance!

tan
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blute
Moderator


Joined: 15 May 2007
Posts: 20
Location: nottingham
PostPosted: Mon Aug 13, 2007 6:50 am    Post subject: Reply with quote
Hi Tan,

You need soffit vents, the soffit is the horizontal board just below the gutter.

New upvc soffit boards have a vent strip built in but if you are not having your soffit and fascias replaced in the near future you can buy round vents that can be placed in the existing soffit, these will cost you no more than a couple of quid each.

Be careful when drilling out for the vents because on some old house's the soffit boards were made from aspestos.
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tan



Joined: 10 Aug 2007
Posts: 5
Location: Coventry
PostPosted: Mon Aug 13, 2007 7:02 am    Post subject: Reply with quote
Hi Blute!

Thanks for the valuable info and the asbestos warning!

tan
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blute
Moderator


Joined: 15 May 2007
Posts: 20
Location: nottingham
PostPosted: Mon Aug 13, 2007 7:07 am    Post subject: Reply with quote
no problem
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Alf58



Joined: 26 Jul 2007
Posts: 12
Location: Essex
PostPosted: Mon Aug 13, 2007 7:58 pm    Post subject: Reply with quote
I had to do that job in my house. At times it was raining in the loft!

What you will need is a powerful cordless drill (minimum 14v) cos you wont want to drag your drill power cord up your ladder with you. You also will need a circular cutting tool of the same diameter as your plastic sofit vents and a face mask. It is quite an unpleasent job.
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tan



Joined: 10 Aug 2007
Posts: 5
Location: Coventry
PostPosted: Tue Aug 14, 2007 7:56 am    Post subject: Reply with quote
Also, I guess it depends on the pitch of the roof when it comes to the access to the soffit boards... In my current house, the pitch is rather low and getting to the edge can be a little interesting. Confused
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