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How to fix leaking garden shed door?

Hi ,

I was hoping for some advice on how to best seal a garden shed door.

I have been able to seal the base of the shed with Sikaflex and filling the bottom channels with floor leveller.

But now I have found water is getting through the door when it rains.
I have stuck foam around the door some time ago but what can still get through the door …please see pictures.

I would be grateful for any advice

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JacobZ

Hi @ChrisA,

It seems like you've already done pretty much everything you can to prevent water from getting in, so identifying the specific point where it is getting in will certainly help.

If you grab your garden hose and spray the door with it, can you identify where exactly the water is getting in so we can pinpoint where we should focus?

The only thing I could think of, generally, that might help is to mount some flat bar to the inside of the door frame, so the door has something to close against.

With the flat bar in place, you could then attach a rubber door seal like this Syneco 6 x 9mm x 5m Black Self-Adhesive Door Window Weather Seal so that the door compresses against it once closed.

Allow me to tag @Noyade, @AlanM52 and @Dave-1 to see if they have any ideas.

Let me know what you think.

Jacob

Dave-1

Good Morning @ChrisA

I am impressed that you have managed to seal the shed so well 🙂 Those sheds always seem to have leaks. As @JacobZ mentions you have already done the steps to seal the door that i would also be doing.

The only thing extra I can thik of is adding a metal overlap trim to the side of the door (I am thinking at least a 30mm extra overlap) and also top of the door plus maybe a step off type deal at the front bottom of the door. I would also put flashing like that on the inside hinge side of the door. @JacobZ 's suggestion of hosing the door to see where the water is gaining entry is a good one.

Dave

AlanM52

Howdy @ChrisA,

Here are some thoughts including one from @Dave-1 and also @JacobZ

Trim the door with rubber weatherstrip or EPDM seal strip.

For water ingress under the door bevel the concrete corner with a angle grinder and/or pop rivet flashing on the inside (bend angle greater than 90).

You may be able to simply use threshold seal.

FYI: This is why the concrete slab for colourbond garage...

has a rebated edge all the way around

Cheers

ChrisA

I wanted to thank Jacob, Alan and Dave for the great suggestions!

when I bought this shed from Absco they but me in contact with their recommended concreter …he really should have rebated the slab to stop water coming in!!
So after all this trial and error I can recommend filling the bottom channels up with something…I used floor leveller both inside and out and then Sikaflex around the outside perimeter of the shed ( see pics attached)

As for the door I put an angle at the bottom yesterday and it seems to have fixed the leaking.
I siliconed it on and use pop rivets to keep it in place.( see pics attached)

Thanks again everyone!

ChrisA

Does anyone have any ideas how to best fill this large gap under the shed concrete slab ?? Grateful for any suggestions!

Dave-1

Afternoon @ChrisA

🙂 Nice to hear the leaking has stoped.

The concrete and gap under it.

I was going to suggest some concretemate and formwork but then trying to fill it and it not leak would be problematic.

So maybe dig it out by 10cm then formwork that lines up with the existing edge of your slab. You could also use some masonary screws into the slab as points of bonding the new and old together like I did for my patio Concrete patio repair I am thinking of the underside more then the front, I also wouldnt make it wider tho it would be easier to pour in the concrete slurry, I think it would crack/not look so nice down the track.

So dig the ground by 10cm, drill and thread your masonary screws if you use them. Then the formwork, I just used some CUSTOMpine 1800 x 445 x 16mm Carcass Shelving E1L White Standard Particleboard so the concrete wouldnt stick, I would leave gaps so you can pour the slurry in and use something like a cheap dustpan as the nozzel. Once the concrete has gone off then you could smooth the left over gaps with some thicker concrete. to create a smooth surface.

Dave

EricL

Hello @ChrisA

Those are excellent repair suggestions from @Dave-1. But I'm a little bit concerned about the soil eroding away from the bottom of the slab. This is a very strong indicator that rainwater is passing along the front of your shed and eating away at the soil. Just to add to the suggestions made, I propose installing a French drain in front of the shed base and a little bit to the left and right of it. In this manner the sheds front section and sides are protected from running water.

If you need further assistance, please let us know.

Eric

ChrisA

The thanks for the suggestions Dave and Eric.

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