Decks, Patios, Porches and Docks - Flashing problem
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baltimoron
05-11-05, 11:24 AM
My wooden deck is attached to the house at slightly above ground level. In my basement, the bolts that attach the deck to the rim joists of my house (the large beam running under the exterior wall, to which the floor joists attach) are visible.
After heavy rains, there is wetness around these bolts and on that beam in the basement. There's no dripping water, but the beam is visibly wet. I can't see the junction between the deck and the house, but I wonder if it was properly flashed. I'm going to try to crawl under the deck to get a good look, but my questions are:
What should I be looking for?
If flashing is there, it's not working. What should be done?
If flashing isn't there, how can I add it without removing the deck?
Is there any other option?
Who would I call for this kind of work?
Thanks in advance for any help.
After heavy rains, there is wetness around these bolts and on that beam in the basement. There's no dripping water, but the beam is visibly wet. I can't see the junction between the deck and the house, but I wonder if it was properly flashed. I'm going to try to crawl under the deck to get a good look, but my questions are:
What should I be looking for?
If flashing is there, it's not working. What should be done?
If flashing isn't there, how can I add it without removing the deck?
Is there any other option?
Who would I call for this kind of work?
Thanks in advance for any help.
Ed Imeduc
05-11-05, 12:04 PM
What you should have there is flashing. when the home is built and they bolt the joist hanger 2X for the deck to the belt board of the home. A piece of sheet metal flashing That looks like a L with a small foot down on it should go on top of it and be under the siding of the home. The deck boards would go on top of this. This way no water can get down there between the belt board of the home and teh joist hange for the deck.
Id pull some of the deck up next to the home and fix this for sure Id flash it dont try and caulk it.
ED
Id pull some of the deck up next to the home and fix this for sure Id flash it dont try and caulk it.
ED
dripless
05-14-05, 09:20 PM
How big is the deck?
If its not flashed, its a bit of a problem to retro fit....if you remove the decking board that runs along the exterior wall of the home and remove a piece of siding to install flashing you can only do an "L" with no downward lip along the ledger board..this may just hold water and debris. If the deck isn't too large you may be able to remove the bolts and install several washers between the ledger board the joist hangers are attached to and the rim joist of the house. This will creat a 1/4" gap for the water to easily drain istead of being held against the rim joist.....just an idea.
If its not flashed, its a bit of a problem to retro fit....if you remove the decking board that runs along the exterior wall of the home and remove a piece of siding to install flashing you can only do an "L" with no downward lip along the ledger board..this may just hold water and debris. If the deck isn't too large you may be able to remove the bolts and install several washers between the ledger board the joist hangers are attached to and the rim joist of the house. This will creat a 1/4" gap for the water to easily drain istead of being held against the rim joist.....just an idea.