Condensation in loft

Hi
Wonder if any of you roofing gurus can advise here.

Moved into a bungalow during this summer which was built in 1981 and the roof has plaster board sarking with felt and roof tiles. During this recent frosty weather I have noticed a musty smell in loft, the plaster board sarking seems damp to touch in some areas which feels like condensation. the loft has 2 air bricks (one on either end of gable wall at height of 5 feet). There is no water storage tanks in loft only the flue for the combi boiler rises through the loft to the roof above. There is no ventilation grills in the soffits or roof tile ventilators.

Is the condensation due to lack of ventilation or is it likely to be some other reason? I would appreciate any comments/advice.

PS the bungalow is located in SW Scotland, if this makes any difference.

Thanks in advance.

 

1 air brick in each gable is nothing, it was probably OK when it was built but we have totally different lifestyles nowadays. Adding a good couple of tiles vents in each side as low as possible would be a good start.

That said have a thorough read through this: http://www.diynot.com/wiki/building:condensation_in_houses

 

Not if there is no market for it anymore.

 

Another minute of my life wasted, 9000 odd posts! have u got nothing better to do freddie!

 

U got to be great fun at parties!

 

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