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Water infiltration- steel building
- Thread starter Big Daddy Chop Shop
- Start date
matt_i
Well-known member
Need a closer look, is it from splash or wind driven rain going up under the bottom edge of the siding?
36truck
Well-known member
Make sure you have good drainage away from the building. I would look into some from of caulking to seal the sill plate and the floor.
rburke65
Well-known member
Well I think I would start with a good caulking around the perimeter and go from there.
readhead
Well-known member
If the siding extends below the floor as it should then problem is probably at the base of the jamb. Caulking the jamb to the floor will help but it may also be coming under the door.
Richard Cranium
Well-known member
how about running a bead of silicone along the inside?
cbacres
Well-known member
If you could get us a closer shot of how the panels end at the slab, that will tell us a lot more. My buildings panels end with a angle trim under the bottom and it runs up about 2" behind the panel, all of this on the outside edge of the slab, and lower than the top of concrete.
If your is flush, I'd recommend using something like Silka flex, may be able to get in color. This is a single part polyurethane that is just plain tuff. I would put on the outside as I'd be concerned if caulked on the inside, water under the steel sill may cause it to rust.
Sometimes you may need to caulk the trim around the roll up.
Hope this helps
If your is flush, I'd recommend using something like Silka flex, may be able to get in color. This is a single part polyurethane that is just plain tuff. I would put on the outside as I'd be concerned if caulked on the inside, water under the steel sill may cause it to rust.
Sometimes you may need to caulk the trim around the roll up.
Hope this helps
thrifty bill
Well-known member
Very minimal overhang, unless your wall panels extend below the slab, you are going to get water in. And of course, the ground needs to be lower still, and slope away from the building.
Grade of the ground looks pretty close to the height of the building's floor.
Grade of the ground looks pretty close to the height of the building's floor.
theoldwizard1
Well-known member
If the slab is low compared to the grade, it could just be water puddling before it can run off. A french drain on that side, leading to a lower outlet will help.
If the slab is at least 4" about grade, the issue is just as you suspect, wind blowing it up between the slab and the siding. You can try caulking along the Z-channel but I am not sure that will do it.
This is what I would do (if feasible). Get some 12-18" pre-painted coiled aluminum trim stock. Remove the Z-channel and bottom edge of the siding. Dig a small trench along the slab edge. Slip the aluminum stock up under the steel siding. You might have to do this from the inside or dig a much deeper trench so you can work it in for the outside. You want the aluminum to end below grade and be several inches higher than the sill plate. re-attach everything to the slab and caulk. Back fill with gravel.
If the slab is at least 4" about grade, the issue is just as you suspect, wind blowing it up between the slab and the siding. You can try caulking along the Z-channel but I am not sure that will do it.
This is what I would do (if feasible). Get some 12-18" pre-painted coiled aluminum trim stock. Remove the Z-channel and bottom edge of the siding. Dig a small trench along the slab edge. Slip the aluminum stock up under the steel siding. You might have to do this from the inside or dig a much deeper trench so you can work it in for the outside. You want the aluminum to end below grade and be several inches higher than the sill plate. re-attach everything to the slab and caulk. Back fill with gravel.
cbacres
Well-known member
I meant to ask, is there a recess in the concrete for the bottom of the roll up door to set in when closed?
I messed up and overlooked this when my building was built and had to put a threshold in to stop water. Rain will run down the door track and then along wall. I ended up caulking around the base of the track and it helped a lot.
KY steel in Winchester KY? I looked at there buildings and they seemed to have a decent product.
I messed up and overlooked this when my building was built and had to put a threshold in to stop water. Rain will run down the door track and then along wall. I ended up caulking around the base of the track and it helped a lot.
KY steel in Winchester KY? I looked at there buildings and they seemed to have a decent product.
theoldwizard1
Well-known member
Old Wizard, I like the flashing idea, this is simple and basic, and I know it will cure it if that is where the water is coming in. Not sure the trench is required, but I see where your head is at. Very much appreciated.
A lot of folks think I lst it long ago !
Glad my description makes sense to you. Kind of a lot of work, unless you can slip it in from the inside.
I did the same when I replaced a rotted sill plate on the back of my garage. I'm not sure it actually helped anything because my water problem was caused by the grade being above the slab, 24" away. French drain solved it for me.
vartz04
Well-known member
I have the same issue in my shed. The door is under a covered porch but the concrete work of the slab must have been done by the PO and his drunk buddies as its not flat/pitched right. Water pools In front of the door and leaks under. I intend to go at it with a grinder at some point and at least make an escape route for the water off the covered porch slab. I am also hoping some caulk between the concrete and the sill plate will help too
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