Surveyor or Builder first?

sirgypsalot

Hi,

A wall that joins our extension to the original solid-brick wall has developed a worrying damp patch at the top corner (following lots of recent wet weather)

My first thought was that flashing on the roof must be damaged allowing water to run down the main wall and then between the edge of the roof, but I can't see any obvious signs of damage or where water might be penetrating.

I'm lost as to how to diagnose this further as it could be so many different things, and unsure whether I should get a surveyor in to try and find the source, or contact a roofer to look at the guttering, or a builder to assess the general pointing!?

Any thoughts appreciated, or recommendations for a good all round tradesman in the West Sussex area?
Thanks in advance.

dkmax_2

sirgypsalot wrote: »

Any thoughts appreciated

Next time it is bucketing down, grab a brolly and stand outside to have a look. This may reveal something that would otherwise not be obvious. Also bear in mind that water may be penetrating elsewhere and flowing laterally to where it has become evident. A damp meter may help diagnosis.

phill99

A fdecent roofer or builder should be able to tell you the problem. Don't worry about a surveyor - they will charge you and arm and a leg. A builder or roofer deal with this kind of stuff all day long so will put you right.