Cheaper option for screw cover foam for window.

SilentJ20

Member
May 26, 2021
63
Graham, WA
Boat Info
1994 SeaRay 220BR Signature
Engines
5.7 Mercruiser Alpha 1 Gen 2
Apologies if this was shared before, but I couldn't find evidence of it.

The screw cover foam on the bottom of my windows has started to disintegrate. Still technically served their function, but wiping down the boat or washing it left black foam particles all over.

The most common recommended product is a painfully-priced (for what it is) Taylor Made foam. $32 for 6ft of foam (over $5 per foot!). I would need four pieces to have enough to do my windows. I know boats aren't a cheap hobby, but I was NOT spending $130 on cheap foam. There had to be a better option.

There really isn't one, though. At least not easy to find. Everything either has adhesive or is questionable quality. Enter McMaster-Carr. They sell weather-resistant EPDM foam strip, $20 for 10ft ($2 per foot). And because of the proportions, I could get away with two 10ft pieces for less waste than the four 6ft pieces I'd need of the Taylor Made.

https://www.mcmaster.com/93725K152/

Still a little much in my mind for FOAM, but it doesn't feel like being robbed. The material is a bit different, but better, imo, than what came off my boat (appears to be similar to Taylor made large-cell foam).

Foam comparison:

mcmaster-carr EPDM on top, used boat foam on bottom
02blUTB.jpg


EPDM on left
62tWmbh.jpg


The EPDM has a MUCH smaller cell size and has a very good feel to it. I know I'm comparing this to my old foam, but the cell structure is most interesting. The ONLY downside in construction is there are joints in the foam:

QiYVCHF.jpg


Like they cut it from a sheet and glued it together. It's not as noticeable on the boat as it is under my shop lights here, and if I were using it as a gasket/seal for a box or something I'd probably care more. But in this case it's not a concern.

Installed on the boat (pardon the dirt, haven't done my 'springtime shine' yet) with an application of 303 protectant:
jVnJ6t4.jpg


Time will tell how it does long-term, but I'm happy to have saved almost $100 for foam.
 
I used the McMaster EPDM a few years back. It has not weathered as well as I had hoped. I'm not sure that it's any worse than the Taylor Made but you will see a lot of shrinkage. Save some scraps to shove in the gaps in future seasons.

If I were to do it over again I'd use radiator hose. There was a post here a while back about how to remove the white lettering (acetone I think), slit a bit out of the center and install...

I hope yours weathers better than mine!
 
Like Stee says there is quite a bit of shrinkage in the length over time. So pack it in there to accommodate.
We talked about this product and I used on my 400DA eight of nine years ago. No regrets.
 
Cool, if this only lasts a handful of years, there are worse lessons to learn. Were your boats always in the elements? Mine only makes day trips to the water, otherwise it lives covered under a carport.
 
If I were to do it over again I'd use radiator hose. There was a post here a while back about how to remove the white lettering (acetone I think), slit a bit out of the center and install...

You don't by chance remember the size of hose, do you? I'm trying to search for it (searay and google searches) but haven't turned anything up yet--other than a thread where this foam was discussed, and everything I posted was already known, haha! You even brought up the same comment about the radiator hose but no one added to it there, either.

Thought my findings were more original! haha
 
I replaced mine several years ago and used an almost identical product by TACO. I'll look for my information.
 
You don't by chance remember the size of hose, do you? I'm trying to search for it (searay and google searches) but haven't turned anything up yet--other than a thread where this foam was discussed, and everything I posted was already known, haha! You even brought up the same comment about the radiator hose but no one added to it there, either.

Thought my findings were more original! haha

I wish I did! It was a random post from a long time ago from what I recall.

I don't plan on replacing mine again, for the record. I'm coming into my 5th season with the McMaster stuff and it's still better than the original foam. I just had higher expectations, that's all.
 
Ohh and yeah - mine is outside May-October, 24/7. If you're keeping yours under cover most of the time you'll be a thousand times better off than I am...
 
Took it out and never looked back
Let’s the channel dry out where risky screw leaks can happen
 

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