seacast transom

chrisvazquez1 · #1 04-14-2008, 08:13 PM

im considering using seacast for my transom. any comments or opinions on this stuff? i figure it would be alot stronger considering ill be puttin a 250 on her

Briguy · #2 04-16-2008, 06:03 PM

In a word, no. I have seen seacast used on boats and first it is very heavy, 2nd it can crack over time. Simply put, glass over marine plywood will last 20-30 years.

hermco · #3 04-16-2008, 07:17 PM

I have used it a few times with good results.

Briguy · #4 04-16-2008, 11:27 PM

Herm, No offense but have you seen the seacast after 3,4, or 5 years? Why would someone choose that over wood or a cored product?

waytogo · #5 04-17-2008, 02:51 AM

Briguy

What happens to seacast after 4-5 years

Thanks

Dave

Bigshrimpin · #6 04-17-2008, 03:19 AM

Anyone know what seacast is . . . I always thought is was some combination of 1/2 chopped strand, cabosil, talc, and resin?

hermco · #7 04-17-2008, 07:47 AM

Quote:

SEACAST POURABLE TRANSOM - LIST OF INGREDIENTS (100%)
Vehicle: Blend of proprietary polyester resins
Weight: 36 %
Solvents: styrene weight 18 % (CAS# 100-42-5 TLV 100pp)
Pigments & Extenders: (dry materials) weight 51 % - Titanium Dioxide (CAS# 13464-67-7), Calcium Carbonate (CAS# 14807-
96-6), Silica (CAS# 60676-86-0) and Inert Fillers (CAS# 14807-96-6)

It is a mix of proprietary resins and recycled ground fiberglass. You add the supplied ground glass then catalyze with BPO cream hardener. It is in my opinion only a good idea to use when the core is totally rotten to mush and the boat transom has a good existing laminate.

Seacast is a core material so you need a sufficient laminate on both sides of the material to provide the strength.

Proper preparation is key to achieve good results. They have a pretty good website with step by step instructions for use.
transomrepair.com

doodlebug · #8 04-17-2008, 08:31 AM

I poured my transom,in my opinion if you plan to keep the boat for any length of time it's the only way to go it bonds better because all the voids are gone.

Briguy · #9 04-17-2008, 12:10 PM

Well if it can handle twin 250's then that's probably a good indication to go ahead and uses it.

cSickNick · #10 04-17-2008, 02:17 PM

Years ago i was heading down the path of using Seacast.

Yes, i was handy with a chainsaw and removed the transom core from the top!!

The main reason i decided against using Seacast was the fear of it cracking.

Decided to use the tried and true plywood method.

Ah yes, good old days ... chainsaws and boats!

- Nick