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Best Waterproofing product required

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  1. #1
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    Default Best Waterproofing product required

    Hi All,
    I have a existing deck on the first floor, it has a few problems. It was constructed by previous owners out of cyprus sitting on two I beans going between the brick walls. There is access from the 2nd floor onto the deck. Problem is that where the tin roofing for the down stairs roof hits the other wall there is no flashing. There is also very limited space to get in there and do anything. There seems to be many tubes of silicon have been used over the years.

    Is there something better than silicon to fix this like some tar membrane that will fix it once and for all?

    The other question is hand rails these are really stuffed and need to be replaced would love to go SS but the cost is just too great any help or suggestions would be greatly appreciated.
    Monts

  2. #2
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    The bad news:
    Not much will stick to silicon based sealant and it's best avoided, if the the added was not a silicone base it will probably still leak.

    This area is normally sealed with a strip of aluminium angle and lots of sikaflex then a waterproofing membrane.

    If you can an angle grinder onto the flat section and give a light run to remove the silicon you should be able to install a 'soft' flashing glued to the floor and tacked up to prevent water entry.

    A soft flashing can as simple as some plastic sheeting or Core-flute, failing that clean the floor just under the overhang and sikaflex an alloy angle under the overhang with the bottom leg of the angle facing out.

    Good luck.
    Growing old is compulsory, growing up is not.
    http://www.wet-seal.com.au/waterproofing/locations.html

  3. #3
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    Default thanks

    Oldsalt thanks for the advice. Have taken some pics today so it will make it a bit clearer. As you can see not much access due to beams. Have removed some of the cyprus deck boards to get close to wall to show problem. Does this change your way of attack?


    deck_silicon01.jpg - butt fit against bricks

    decksilicon3.jpg - the silicon problem

    decksilicon2.jpg - the proximity of the beam

    once again thanks
    Mont

  4. #4
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    Quote Originally Posted by Montyboy View Post
    Oldsalt thanks for the advice. Have taken some pics today so it will make it a bit clearer. As you can see not much access due to beams. Have removed some of the cyprus deck boards to get close to wall to show problem. Does this change your way of attack?


    Click image for larger version. 

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ID:	85884 - butt fit against bricks

    Click image for larger version. 

Name:	decksilicon3.jpg 
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ID:	85885 - the silicon problem

    Click image for larger version. 

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ID:	85886 - the proximity of the beam

    once again thanks
    Mont
    Take some measurements of the profile and the slope away from the gap,(it looks a bit like Custom Orb) and call your local roofing manufacturer, they can make a flashing for this, screw the top section and seal the rest with a sealant from roofer.

    It looks like the moisture can only enter at the bottom so the flashing must extend far enough down the roof to prevent blow back.

    Good luck.
    Growing old is compulsory, growing up is not.
    http://www.wet-seal.com.au/waterproofing/locations.html

  5. #5
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    Default

    Big thanks will take off some more boards and get onto it. Once again thanks for the advice much appreciated

  6. #6
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    I grew up in a house that had the whole roof of this stuff - that was just about flat. Could chase cats across is, race matchbox cars along them.......but hell it made a racket in a good bit of rain!

    If I remember correctly the lip on a low gradient roof needs to be turned up at the brick end and also the lip turned down at the gutter end.

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