Bakflip MX4 tonneau - this much leak normal?

[alrashid2]

Hey guys. Have the Bakflip MX4 tonneau. Downpoured all day today. Checked today and got this much water in the back...

Looks like most of it is coming from the bed rail caps. But definitely some leaking at seams and such.

Im ok with it as it really is only leaking at the edges of the bed and draining along the side. Middle is dry.

Just wanted to make sure this was normal. Thanks all

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[Rangerous44]

I have the exact same cover and it is not a perfectly water-tight seal. I store everything sensitive in there in another weather proof container. That being said, on mine there are gutters that run the seepage down into those drain holes at the bottom of the bed. I don't see the downspout tubes installed in these pictures.

 

[alrashid2]

I have the exact same cover and it is not a perfectly water-tight seal. I store everything sensitive in there in another weather proof container. That being said, on mine there are gutters that run the seepage down into those drain holes at the bottom of the bed. I don't see the downspout tubes installed in these pictures.

Thanks for the reply. I do have the rails and drain hoses installed they are just tucked a bit higher out a different drain hole.

With your setup how much water do you get in the bed? As much as me?

 

[Valydathor]

I have the exact same cover and it is not a perfectly water-tight seal. I store everything sensitive in there in another weather proof container. That being said, on mine there are gutters that run the seepage down into those drain holes at the bottom of the bed. I don't see the downspout tubes installed in these pictures.

This is completely normal especially after a heavy downpour.

 

[alrashid2]

This is completely normal especially after a heavy downpour.

Ok good to know! Just wanted to know what to expect. Thank you

 

[gtyates]

Unfortunately, this is the norm. It is the terrible design of the bed rail tops in our trucks. I had a '19 Ranger with the Bakflip soft top and it only allowed a tiny amount of water in when in the car wash. Otherwise, it was dry. Like everyone else, extremely disappointed in the the Ford top rails, which are so full of holes underneath the plastic trim piece that it is ridiculous.

 

[STEVE_K]

Here's a good write-up from OxygenMask on sealing up the bed rails:
https://www.ranger6g.com/forum/threads/weatherproof-bed-project-diy-writeup.28611/

 

[saxdogg]

Make sure your drain hoses are all downhill!

 

[CZECH-SIX]

from what I've seen the drains , open end of the rail towards the tailgate have nowhere to go but hit the tailgate and enter the bed, debating on plugging that end to see if the front drains can handle it all.

 

[Geo8866]

I added a little loctite sealant in the front corners - wherever I could see a little light coming through. I would estimate it eliminated about 75% of the leakage.

 

[SLJ]

I have the Worksport AL4, no drain hoses required. It's sealed pretty well. The only time I get any water in is typically through the Ranger's rails and space on either side of the tailgate and then it's usually from a touchless car wash. Has to be a pretty heavy rain otherwise. I don't think there's any avoiding it due to the design of the bed rails. I just use waterproof containers for anything that can't get a little water on the bottom.

 

[CoastieN70]

Hey guys. Have the Bakflip MX4 tonneau. Downpoured all day today. Checked today and got this much water in the back...

Looks like most of it is coming from the bed rail caps. But definitely some leaking at seams and such.

Im ok with it as it really is only leaking at the edges of the bed and draining along the side. Middle is dry.

Just wanted to make sure this was normal. Thanks all

I sealed my bedrail caps with black silicon and installed this tailgate seal: Access Tailgate Seal | RealTruck
Eliminated most of what you're seeing. Others have gone to extremes sealing the bed rails but it seemed like too much work to me.
I can easily live with the small amount of water left from my efforts...

 

[Valydathor]

Ok good to know! Just wanted to know what to expect. Thank you

You're welcome.

 

[alrashid2]

I added a little loctite sealant in the front corners - wherever I could see a little light coming through. I would estimate it eliminated about 75% of the leakage.

Oh wow, can you elaborate on that? Not picturing what you mean

 

[RealTruck]

Oh wow, can you elaborate on that? Not picturing what you mean

Pretty sure I know what he means. Loctite is a brand that's best known for their thread locking compounds, but they also have a line of sealants, including the silicone I'm showing you an image of. Any silicone sealant will work as a supplemental measure to help keep water out. Hope that's helpful!
-Todd

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