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How do I repair the tile edge in my Dormer Valley

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  • 27-07-2009 11:07am
    #1
    batman1
    Registered Users Posts: 600 ✭✭✭


    Hi,

    I have a leak into a room upstairs where there's a Dormer window. I have been up on the roof and it appears that the mortar edging on the tiles at either side of the lead valley is crumbling and some has fallen out, leaving gaps.

    It's not a big area and I feel it would not be a major job to put new mortar on.

    I am just wondering is it regular mortar mix (3:1) or is there a special product or mix for the job.

    Also, any advice on said job is much appreciated.


Comments

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    #2
    eosirl08
    Closed Accounts Posts: 10 ✭eosirl08


    Hi, 3-1 mix is fine you could even go 4-1. add dye when mixing just make sure there's plenty of dye in the mix, it should almost look jet black, wont take long for the colour to fade down. Make your mix very dry as its easier to work with and use the back of your trowel applying small bits at a time. wash off any mortar off lead straight away as it looks terrible when it stains. Hope this helps


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    #3
    porte
    Registered Users Posts: 207 ✭✭porte


    Hi the advise given above is very good but dont be fooled where water is concerned as you could have aleak elsewhere water will travel also you should have a good over-lap of tile over the lead i just built my house and all last winter my valley had no muck in them at all. Anyway if its safe for you to do so go back up and have a good look for chipped, cracked or loose ridge tiles.
    Good luck


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    #4
    PeteHeat
    Registered Users Posts: 648 ✭✭✭PeteHeat


    Hi,

    Mortar does keep the water out, in fact I have seen a lot of valleys where the mortar was a contributor to the leak, in the 1980's all valleys fitted in the Fingal area had to be left open !

    There are a number of reasons why your roof could be leaking, the reason it shows at the valley is it travels along the felt to the weakest point.

    .


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