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Is your deck always wet? Rectangular Scuppers - VHB Mount

Old 10-16-2018, 05:24 PM
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Default Is your deck always wet? Rectangular Scuppers - VHB Mount

Hi Guys,

I've been getting a lot of emails/PMs about our rectangular scuppers so I figured I'd start a thread specifically for them. They will be available early in Feb 2019 for $49.99 each.
  • Material : 316 Stainless Steel
  • Finish: Mirror Polish
  • Dimensions: (see drawing below)
  • Weight: 1 lb 6 oz.
The scupper uses 3M VHB tape to adhere to the hull instead of screws. This simplifies installation and eliminates pathways for water to penetrate into the transom. Additionally, without screws they are the best looking scuppers on the market . The VHB tape covers 12 square inches-- our Stern Pad standard product, for comparison, covers 15.25 square inches and can withstand a 500lb tensile test. This type of VHB tape has been tested by 3M in a 10+ year salt water submersion test with minimal degradation in strength.

Additional info:
  • We have the ability to place a slight curve in the frame if any transom requires it.
  • There is also a rubber strip (not show) that is on the "flapper" component--this helps with sealing and minimizes noise.







Thanks for looking!
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Old 10-17-2018, 06:49 AM
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MC
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those look nice. I have a flats boat that has some scuppers that need replaced. I'll take the measurements to see if they will fit.

I like the idea of a clean look with the 3m adhesive, but wondering if someone could put in some small mounting hole for screws- really do not want the scuppers to end up in the water should that 3m tape not bond well during installation.
Old 10-17-2018, 07:26 AM
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subscribed. please post when available.
Old 10-17-2018, 07:33 AM
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Originally Posted by MC View Post
those look nice. I have a flats boat that has some scuppers that need replaced. I'll take the measurements to see if they will fit.

I like the idea of a clean look with the 3m adhesive, but wondering if someone could put in some small mounting hole for screws- really do not want the scuppers to end up in the water should that 3m tape not bond well during installation.
Hi MC,

Thanks for the comment and input. There is definitely room/material to drill some countersunk holes for screws if you desired to but I think it would be better to instead use that time to properly prep the bonding surface. The primary reason for the elimination of screws in the transom is not for looks but to eliminate holes in the transom. Screw holes are the number 1 cause of transom damage.

The video below is worth a watch. It shows how strong 3M VHB tape is when installed correctly. Just to give some perspective, the trucks in the video are rated to pull 60,000 lb. + trailers.


Last edited by SeaworthyInnovations; 10-17-2018 at 12:18 PM. Reason: spelling
Old 10-17-2018, 05:06 PM
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Old 10-17-2018, 06:16 PM
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is the flapper hanging open in a 13 degree transom?
Old 10-17-2018, 07:08 PM
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Originally Posted by omeris View Post
is the flapper hanging open in a 13 degree transom?
Yes. Functionally these are similar to the T-H marine rectangular scuppers ( https://www.westmarine.com/buy/t-h-m...pper--15921026 ).

This style is intended to be installed above the waterline on larger vessels. They are meant to prevent "flowing" water (ex. waves, backing down on a fish, etc.) from entering the deck. On a 13 deg transom they would hang open slightly but would close when backing down on a fish due to the force of the water hitting the transom.

It is important to note that larger boats aren't affected as much by the weight of the passengers/gear/fish-- so the waterline is more constant. A slightly opened scupper would be much more of an issue on a 18' boat where 3 grown men standing in the back corner is enough to make a scupper go below the waterline.

Hope this helps.
Old 10-17-2018, 07:12 PM
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Round ones?
Old 10-17-2018, 07:36 PM
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Originally Posted by Fish'nFool View Post
Round ones?
We make a round version ( I think that is what you are asking )
https://www.seaworthyinnovations.com/ezseries/
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Old 10-17-2018, 07:50 PM
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Technology has really progressed!
Old 10-17-2018, 07:52 PM
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The idea to eliminate transom holes is so obvious we overlook it continually... nice job!
Old 10-18-2018, 06:06 AM
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Amy problems sticking to painted boats?
Old 10-18-2018, 06:23 AM
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Originally Posted by GetLit View Post
Amy problems sticking to painted boats?
It will stick to topside paint and gel-coat.

Anti-fouling / Bottom paint or any paint with PTFE (teflon) must be completely removed but these scuppers should be above the waterline so these paints shouldn't be present.

All wax and buffing compound residue must be removed to allow for a good bond. Acetone and a scotch-brite pad (supplied in package) will take care of this.
Old 10-18-2018, 07:53 AM
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Originally Posted by SeaworthyInnovations View Post
Yes. Functionally these are similar to the T-H marine rectangular scuppers ( https://www.westmarine.com/buy/t-h-m...pper--15921026 ).

This style is intended to be installed above the waterline on larger vessels. They are meant to prevent "flowing" water (ex. waves, backing down on a fish, etc.) from entering the deck. On a 13 deg transom they would hang open slightly but would close when backing down on a fish due to the force of the water hitting the transom.

It is important to note that larger boats aren't affected as much by the weight of the passengers/gear/fish-- so the waterline is more constant. A slightly opened scupper would be much more of an issue on a 18' boat where 3 grown men standing in the back corner is enough to make a scupper go below the waterline.

Hope this helps.
This is what I was referring to in the other thread. TH Marine has a shim that keeps the scupper closed...

https://shop.hamiltonmarine.com/prod...air-29436.html

Here it is installed...
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Old 10-18-2018, 08:09 AM
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kind of a tease you dont have any in stock for a few months
Old 10-18-2018, 08:43 AM
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Originally Posted by sammythetuna View Post
kind of a tease you dont have any in stock for a few months
I know, I know!

I was planning on waiting to make this post but a bunch of people have been reaching out to me since I mentioned the product in another post. I figure that this way more people know about them ahead of time as it could impact their winter project plans.
Old 10-18-2018, 09:10 AM
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I'm looking forward to trying out a pair of these!
Old 10-18-2018, 09:11 AM
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Originally Posted by SeaworthyInnovations View Post
I know, I know!

I was planning on waiting to make this post but a bunch of people have been reaching out to me since I mentioned the product in another post. I figure that this way more people know about them ahead of time as it could impact their winter project plans.
Im just ball bustin. looking forward to seeing them.
Old 10-18-2018, 09:37 AM
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A fine looking product. Subscribed.
Old 10-18-2018, 12:08 PM
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Originally Posted by Accountability View Post
This is what I was referring to in the other thread. TH Marine has a shim that keeps the scupper closed...

https://shop.hamiltonmarine.com/prod...air-29436.html

Here it is installed...
Thank you for following up! There will be a gap without shims if you have a tilted transom but if a large amount of water starts to flow it will push the flapper closed. I will attempt to post a demo video soon. Based on our feedback from METSTRADE, we may make a version with the shim included as part of the frame.

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