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draughts in dormer

sonas060 · 2011-12-15 20:15:59

have a dormer that was built in 2003, there is crawl space under the eves that is used for storage, however when the wind in blowing in blows up into the house, there is insulation of 150mm in the eves of the roof, felt and roof slates. any suggestions on how to stop the cold air coming into the house? Thanks

Comments

#32 22-12-2011 1:36pm

mickdw

Registered Users Posts: 23,256 ✭✭✭✭

Join Date: December 2007

Posts: 22816

Brencooney,

The air tightness looks a brilliant job but the new build up looks to have added significant loads to the roof surface. What type of roof structure do you have and did you have to alter the structure internally in anyway to carry the new setup?

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#33 23-12-2011 8:04pm

BrenCooney

Registered Users Posts: 106 ✭✭

Join Date: May 2007

Posts: 97

Hi mickdw,

The lads i got in to do the renovation had a look at the existing roof and agreed that the existing purlins and roof structure were fairly substantial and would carry the additional load. They had a good poke in the crawl space abd could see that while the original builder had a very poor idea of insulation, finese, and general good building techinques, compensated by overengineering the timber construction of the roof. This would not be true in other cases.

dont understand your question goat2. why would it get damp?

brenc

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