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Thanks @catlad. 3.5 is the pitch, which is about 16 degree. So it is a shallow roof. I was also told by the roofer that the headlap is about 2.5 inches. So do I need planning permission if I change the style of roof tiles because the roof will look different from my neighbour's...

Hi, Wonder if someone could help with this additional question - to add back the two missing courses of roof tiles, do I need structural calculations for the building reg application? Thanks. Phil

Thanks for the advice. The pitch is around 3.5, which is quite shallow. The headlap for the tile (Redland Stonewold II) should be 4 inches at that pitch, but instead, it is around 2.5 inches due to the missing courses. If I use different types of tiles, would I need planning permission to...

Hi, I live in a 15 years old end-of-terrace house and have to re-roof. Basically, the developer had laid 3 less courses of roof tiles in our block than other blocks. This has resulted in wind-driven rain penetrated the roof over the years and is causing roof leak as the roof-felt has holes in...

Hi, I live in a 15 years old end-of-terrace house and have to re-roof. Basically, the developer had laid 3 less courses of roof tiles in our block than other blocks. This has resulted in wind-driven rain penetrated the roof over the years and is causing roof leak as the roof-felt has holes in...

@PrenticeBoy - Thanks for your suggestion. The more I looked at other forums, the more I am worrying about it's the T&G type of chipboard and extends across two rooms. Then I might have to saw it! Other people have suggested circular saw, hole-saw... etc. Hope I don't need those ...

Hi all, I have to lift some floorboards to see if there is water leak. However, i'm a bit stuck. I have a pry bar but there is no way I couldn't get it underneath the nail head and pull it out. Do I have to cut the board around the nail head to make some room? Here is a photo...

Thanks for your comments. @tony - The leak only appeared after the stormy weather in last Oct/Nov. I guess it was at that time the roof felt gave up - too much water. I'll talk to CAB and RICS tomorrow and see what can I do. Your suggestion of name and shame is probably useful as I'll...

Thanks Tony. They were new build houses 14 years ago. I remembered the development of our block was 4 months late. The builder might have rushed the job. My questions are: - (1) Since it was a new build house, why would NHBC inspector pass the house as ok if the roof was not done...

Thanks sxturbo for your info. Our block consists of three houses and all of us experienced roof leak. In addition, the missing courses of tiles are still very visible. So there is no debate about whether the leak is due to wear and tear, or bad workmanship. I am thinking of class action...

Only 14 years old. The two blocks of terraced houses are in the same development built by the same developer at the same time.

Hi, Further to my recent roof leaks, I have discovered that the roof of our block of terraced houses has THREE LESS courses of roof tiles than other terraced houses in a different block built at the same time! Others have 16 courses, ours has only 13 courses. No wonder the wind-driven rain...

Hi tony, regencyroofing, alastair, Thanks for your comments. The roofer has already installed lead soakers which he claims should stop water at the tiles/parapet wall interface. However, the leak is still there, and from the attached photo, it seems water still running onto the ceiling...

@tony : hi, could you please elaborate what's wrong with the flashing? I am no expert so would really like some advices so that I know what to look for and talk to the roofer. Thanks! @alastair : The Redland technical advisor suggested me to strip off the roof and re-laying the tiles...

Hi Alastair, Thanks for your suggestions. I've managed to get in the attic and took a pic of the corner where water leaks onto the ceiling. It definitely looks like the felt has failed and needs to be replaced. Do you know whether felt support trays can be fitted to this type of roof...

Hi, I have roof leak recently and received useful help from quite a few members in this forum. Thanks again. (http://www.diynot.com/forums/roofing-guttering/roof-leak.383334/) After telling the roofer his installation of soakers hasn't stopped the leak, he came back and removed more roof...

Thanks alastair. Maybe he can use a layer of acrylic paint as well? I am just worrying that the roofer is too fixated on the idea that the low pitched tiles are the cause of leak, and neglect other possibilities (like coping stone pointing). Cheers!

Hi, The roofer hasn't come back yet but he said on the phone he is 99.9% sure it is something to do with the low pitch of the bottom row of tiles, and he'll think about how to fix that. He mentioned that he might use some sealant to seal the gaps between the bottom row tiles and the...

Hi, Talked to the roofer and he said he will come back to check after finishing his current job. @John - Thanks again for highlighting the pointing issue. @Alastair - I'll ask the roofer to remove the bottom row tiles to investigate further. @yorkie - Thanks for the advice about...

Hi, Thanks all for your info. From what you guys said, the possible problems are: - 1) Low pitch of bottom row of tiles 2) Pointing between water table / coping stones and the lead 3) Lead work 4) Tiles not overhanging the flashing (eaves course) For 1 and 4, they are like that...