Roof Problem

[slid_away]

Hi All
We moved into a new build a couple of months ago but I have spotted a problem in the loft a week ago.
I put boards down in the loft when we first moved in and when I went to put some suitcases away last week, I noticed spots of water that ran directly under what would be the ridge of the roof. These water spots, were as if someone had sprayed a water mist gun on the boards
I went up again after 2 days, this was after heavy rain and this time, there were small puddles.
We contacted the builder who came out and had a look and said the roofs are designed to let condensation out and you will get drips.
I think this is a load of rubbish, no roof should let water in.
He said the design of the ridge tiles are such that they are not mortared in which I understand but under no circumstances should water be coming in the loft space
Is there a roofer or someone with the knowledge who can confirm this please?
Many Thanks in advance

[TonyV]

Did your builder not supply you with any guarantee like this?

http://www.nhbc.co.uk/Warrantiesandcover/

[slid_away]

Yeah we have received all the warranties and he is getting the contractor to look at it but I just don't believe his explanation of the cause of the problem.

[TonyV]

You could have independent survey done by a surveyor

http://www.rics.org/uk/

[slid_away]

I had considered this but will wait until the contractor has been out before doing that...it'll save some money!

[The Builder]

With all due respect to your builder, (but not much) ......... he's talking tosh.

One of the current Building Regulations specifies mechanical fixing to ridge tiles (screws and brackets) rather than relying on mortar alone. Sometimes, a ventilated ridge is needed.
Whether you have a ventilated or a simple "Dry Ridge" system, it doesn't alter the fact that is should be watertight.

Whichever it is, it simply is not installed properly. We all make mistakes. The definition of a good tradesman is one that will gladly rectify them.

Press the guarantee company to do the right thing.

[TonyV]

Good advice Builder. If I or anyone that works for me screws up I just hold my hands up say sorry and put it right and give them a bottle of wine when finished

[slid_away]

Thank you both for your comments. I'll wait to see what the contractor says but I can see there is a problem and as long as they fix it, there will be no issue.
Thanks again