Omega Owners Forum

Chat Area => General Discussion Area => Topic started by: omegod on 12 December 2009, 13:51:24

Title: Loft condensation?
Post by: omegod on 12 December 2009, 13:51:24

Just been up for the Crimbo decs and noticed a lot of condensation on the inside of the felt!!

Had the cavity walls and the loft insulated this year so think that is the cause but any ideas how to sort this ?

Guess there are a few roofers etc on here so would be grateful for any tips.

Title: Re: Loft condensation?
Post by: STMO999 on 12 December 2009, 13:53:02

You need to have air circulating. Air bricks in the eaves or such like should do it. Has the new insulation blocked off the air ways?

Title: Re: Loft condensation?
Post by: threppence on 12 December 2009, 13:54:20

Have you got any ventilation for the roof space?.If not, that may help.

Title: Re: Loft condensation?
Post by: Richie London on 12 December 2009, 14:21:11

http://www.tipking.co.uk/loft_ventilation.shtml

Title: Re: Loft condensation?
Post by: Richie London on 12 December 2009, 14:23:28

Quote

http://www.tipking.co.uk/loft_ventilation.shtml

soffits will always be the best place in my opinion. ive put them in 3 houses and added to loft conversions in the past.

Title: Re: Loft condensation?
Post by: HolyCount on 12 December 2009, 14:34:32

What they said  ::)  most made mistake when insulating a loft is covering the vents --- need a good airflow up there

Title: Re: Loft condensation?
Post by: Lizzie_Zoom on 12 December 2009, 15:45:51

Is it really condensation?  Could it be water due to a missing / displaced tile or two?? :-/ :-/

Title: Re: Loft condensation?
Post by: Chris_H on 12 December 2009, 15:54:40

Quote

Just been up for the Crimbo decs and noticed a lot of condensation on the inside of the felt!!

Had the cavity walls and the loft insulated this year so think that is the cause but any ideas how to sort this ?

Guess there are a few roofers etc on here so would be grateful for any tips.

Sources of moisture up there are uncovered water tanks (especially hot water expansion) and hot air rising from the floor below through gaps, in addition to leaks.

Reduce sources and add/unblock ventilation.

Title: Re: Loft condensation?
Post by: Ralph on 12 December 2009, 17:24:31

I had the same problem & had to fit double size airbricks in either gable end to cure it.

Title: Re: Loft condensation?
Post by: Elite Pete on 12 December 2009, 19:46:29

Has someone had the lead off your roof Jon ;D