Roofing Question

Condensation in my roof

I have noticed condensation in my roof space – how can I prevent this?

7 Answers

Best Answer

u mite have to get some more airvents put into the roof,,u can get ones that replace the roof tiles,,iv just had 3 (each side) put in which causes an air flow in the loft which helps!
or try "easyvents" - they are very simple plastic devices held open by a spring that are inserted into the felt lining.
Kind regards,

Answered 17th Feb 2011


Member since 27 Jan 2011

hi ,, having installed many of these and condesation will be present when a roof is well insulated and the cold air of the loft space meet,, ridge vents at about 1500mm centres will eradicate 95% of the problem by giving a cross flow of air much like a chimney draws from a fire ,, hope this help ,,,

Answered 17th Feb 2011

Architecural construction

Member since 28 Mar 2010

you have a cold spot in the roof space where moisture is trapped if you havent got a breathable roofing felt on the roof there are options that can reduce the condensation the cheapest way is to install either slate or tile vents ,or ridge vents buy this is more expensive and having the insulation between the rafters will also be of better use to you

Answered 19th Feb 2011

Finebuild Builders

Member since 26 Feb 2009

Most likely a ventilation problem, try fitting two/three roof vents each side of the roof.

Answered 17th Feb 2011

Able Right

Member since 5 Feb 2009

probablely ventilation so might need roof vents but , if you have loft insulation, make sure the eaves(end of roof, near fascia/gutter is also ventilated, paul

Answered 17th Feb 2011

domestic roofingandbuilding

Member since 15 Aug 2008

hi,you possibly need roof vents,because the air is not circurlating any where,so get a trusted roofer to have a look for you.amany thanks nick

Answered 17th Feb 2011

kentish builder

Member since 14 Jul 2009

slate vents,tile vents,soffit vents (cheapest),ridge vents (dearest), regards, des

Answered 17th Feb 2011


Member since 6 Feb 2009

Need help with your project?

We have tradesmen ready to help you. Post a job, read reviews and hire today.

Post a job

Need some help?

Post a job on MyBuilder to find quality, local Roofers who can help you with your project.

Search all questions