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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

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Building Regulations and Standards: Ridge Tiles

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    Some ridge tiles blew off my neighbour's 4 year old house in the recent high winds. There is little mortar evident & no sign of a dry fixing. What are the current regulations? Can the roofer rely on mortar bedding? Or is a dry fix required?

    David
  2.  
    A few years ago my roofer/builder asked if he could fix the ridge tiles with silicon - I suspected this was because he didn't want to carry a bucket of mortar up and wouldn't be paying for the silicon! Anyway, I spoke to the tile manufacturers and got their spec = to be fixed with a bed of mortar. Builder had to carry the mortar up there.
    We are very exposed here and have winds of over 70mph- tiles haven't moved.
    • CommentAuthortony
    • CommentTimeJan 6th 2012
     
    Old chestnut.

    NHBC say that the builder is to decide on risk and the need for mechanical fixing

    They always decide non needed so they dont have to but them!

    I wrote a piece about this subject in the forerunner to GBM.

    I was for all ridge tiles should be mechanically fixed

    Roofers have to carry mortar up on to the roof to bed ridge tiles, guess how much they use to bed the tiles -- NHBC probably say "fully bedded" almost none are.
    • CommentAuthorowlman
    • CommentTimeJan 6th 2012
     
    I built my place 28 years ago, the roof has Dutch glazed pantiles and the main ridge has dry fixed "saddle ridge" tile, ( I've never seen these from a UK tile company). A smaller extension has a half round from the same Dutch company and they are mortar bedded. Now the mortar ones require re pointing the dry fixed ones are still doing the job fine.

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