Garage floor seal still leaking water from underneath the seal - why?

[Andy85]

I have been battling (patiently with time) as rainy days have recently caused excess water seeping through my single-garage door (predominantly on side corners). So I have tried putting in the Garage Floor Seal with Premier Blue 5.2m Garage Floor Seal  and looked at numerous tutorials ensuring  I am using some sort of liquid nails (I am using "Poly 320g") and that I am gluing the concrete floor as correctly possible (zig zag followed by 2x straight line).

What made it difficult for me was the timing as well as not having enough time to have the concrete floor thoroughly dry (the only best opportunity was when it was slightly damp but nonetheless cleaned off excess dirt). Yesterday late morning (circa 11-12)~ being the only brief given periods of sunshine ~ was the only chance for me to effectively lay down the Door Seal. And glued it for good with the Poly 320g.

I ensured nonetheless that I have left these to dry for at least a day.I even left the garage door open whenever there is ample sunlight especially earlier today this afternoon (1st June).

But as I'm writing this as it's raining @ 11:PM ~ water still seeps in underneath. Why or how could this be happening? I was led to believe also that the poly adhesive I was using was supposed to be "Waterproof" but it's apparently not because it still somehow letting the water go through. But I did make sure at least several hours of effective sunlight and no rain has passed; until this midnight as I'm writing.

Clarity appreciated. I have wasted so much days off-work waiting at home, in between periods of rain and sunshine ~ for the right timing to get this job done. Yet in the end still still leaking and having spent $80+ odd dollars. Really not looking forward for a stressful sleep and be greeted with a flooded garage the next morning.

PS. Why is it that manufacturers these days lack so much direction and instruction on their products? The garage door seal just blatantly stated "Hint: use Liquid Nails Product". But which one? What type? what amount? So much is being omitted we had to somehow rely on unshared trial and errors.

[Nailbag]

Hi @Andy85 I highly recommend you follow @MitchellMc advice to resolve your issue. As he mentioned you have a relatively very simple resolve since your have pavers that can be easily lifted and access to stormwater within arm's reach. 

Please see a few photos below of my setup for both my main garage door and the single one at the rear to my storage shed. The main double garage door has no floor sill because of the tapered ground to the drain. The rear single has a sill because the angle is a lot less and it gets hit by wind driven rain. Both system works very efficiently

Regards, Nailbag.

[Andy85]

Hi @Nailbag and all others,

Thank you so much to all who chime in for the answers and I do apologize for the delayed response. I shall have to rely on getting professional quotations on this job.

Sincerely, Andrew.

[Nailbag]

Hi Andrew / @Andy85 I think one thing you need to keep in mind, is that the floor sill is not a water proof barrier. Even with my drainage system, there has been an instance of unseasonably torrential rain that it couldn't cope with and water flooded over it before it could drain away. This leave me with 30mm of water throughout the garage and ruined skirting.

If I was in your position right now this would be my course of action:

Water shouldn't make its way under the metal sill and concrete for starters. So, I would remove it and start again with either a fresh section or clean the underside of the existing one. Then clean the floor thoroughly of any residue of silicones and glues. Apply a generous bead of Selly's Clear Storm Sealant which has the capacity of even drying under water. Then press the new/old weather strip sill down. But weights across its length to hold it in place. Then once cured tuna fine bead along the from edge where it meets the concrete. Run beads where the ends of the sill meet the bottom of the garage door track. This "Will" prevent water penetrating under the sill. This system will not prevent water going between the top of the sill and the garage door lip that should have a rubber strip along the bottom.

If your not going to install out yourself, then get quotes on a drainage from a plumber and not a landscaper as legally they can't connect anything to the stormwater system. 

I also recommend it be one with steel grates not plastic. Steel will ensure the channel will hold it shape over time and not compress, making it much easier to remove and replace when cleaning.

Regards, Nailbag