Water on Wall

[GavinC]

I was lying in Bed as most people do the other day and i looked above my telly and there was a feel lins of water running down the wall, ( I Think Condensation) it rubbed of with my hand, and has not run down too far. There is a shiny patch where the ceiling meets the wall i think to be a slight build up. since then it has appered on one more occasion. This is the first time this has happened in the 2 years we have lived in the house. The wall in question is an outside wall, but no other area in the house is this happening. Am i right in thinking its condensation, or could there be an issue with my roof? all roof tiles look intact.

Any Ideas?

p.s. all my guttering is clear and i have UPVC boards arround the eaves. so sure its not rotten.

 

[masona]

Could be condensation, have a read here

 

[GavinC]

Had a look, very usefull thanks.

I have noticed over the weekend, that in line with wheer i have seen the water on the wall, there is some cement missing from the eaves on ther ridge of the roof. Could water be getting in there then running down the roof lining to this wall and then soaking in? or a i barking up the wrong tree. If it is i will need to get a builder in to fill the gap on the ridge.

 

[masona]

i have seen the water on the wall, there is some cement missing from the eaves on ther ridge of the roof. Could water be getting in there then running down the roof lining to this wall and then soaking in?

Don't know but it best to cement the missing area anyway to prevent high wind lifting the tiles.

Another theory you could try is move the television in a temporary position or move it away from the wall, I'm guessing the warm moisture is coming from the back of your television which giving you a pocket condensation know as 'trap condensation'

 

[Frederick]

Condensation is actually the most common cause of dampness in buildings so is a likely suspect - There is an excellent article about it on the PGA website - see http://www.specifypga.com/index/articles/articles_section_list/1/Condensation Myths and Facts/

 

[GavinC]

Thanks for all your comments they have been very usefull.

I do however just want to throuw one more spanner in. Last night i was knocking on the wall and a small area neer the top sounds more hollow that further down the wall, i though this seemed strange, then it him me, The flue for the fire in right where the problem is happening, im persuming the hollower section near the top is where the flue is comming more inward to the house as it sticks oyut f the roof tiles. Could this be my problem? do i need to check the seel around the roof tiles where the flue comes out, could the rain be ceeping in here. Im now convinced its might not be condensation as its only appering in this one place daily no where else in the house, and the telly is not directly above the telly its about a meter to the right.

 

[masona]

Last night i was knocking on the wall and a small area neer the top sounds more hollow that further down the wall,

That could be just blown plaster, I wouldn't worry too much unless is blown all over the wall.

The flue for the fire in right where the problem is happening, im persuming the hollower section near the top is where the flue is comming more inward to the house as it sticks oyut f the roof tiles. Could this be my problem? do i need to check the seel around the roof tiles where the flue comes out, could the rain be ceeping in here.

Could be, the way to find out is to start at the top checking for leak, ridge tiles, broken roof tiles, chimney flashing then gutter & work your way down.

Just to remind you over 400,000 people fallen off ladder and roof last year so please think about safely or better still get a roofer to look at the top for you.