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Author Topic:   5200 vs Marine Tex

Cpt Quint posted 05-20-2003 05:20 PM ET (US)
Do you need both? One better or worse?
I use both. To me,5200 gives a permanent yet rubberized bond. Marine tex is more of a fiberglass bond that can be farred and sanded. I dislike having too many different products around. These are used in close related repair issues by members here.
To me they do serve different uses. 5200 would seal a drain tube whereas MT would patch a chipped surface.
Im curious by poll if you think the 5200 replaces MT or each have certain qualities that arent always interchangeable.

acseatsri posted 05-20-2003 05:29 PM ET (US)
Two COMPLETELY different products with different uses. 5200 is an adhesive sealant, Marine Tex is a filler
Morocco posted 05-20-2003 10:47 PM ET (US)
I keep both on the boat because they do different things well:
I use 5200 (or 4200) for bedding/caulking/adhesing things that need a flexible, waterproof and usually permanent bond -- my trim tabs are attached to the hull with this stuff, which also serves to bed and waterproof the screws. I am never worried that my tabs are going to fall off.
Marine tex, on the other hand, is my number one choice for a hard repair -- filling a stripped hole or bonding the hard plastic tube that runs between my rear sumps when it broke off (that watertight repair, which was 'temporary' is still in service because it is just perfect and I hate fixing things that are no longer broken...)
Marine tex is a hard epoxy and 5200 is a flexible, soft adhesive. You need both. If anything, I don't carry any other epoxy than the MT.

As for drain tubes, when I replaced my corroded brass tubes with plastic, I used a softer adhesive caulk around the body of the tubes where they meet the foam, and a hard MT
to make a 'collar' at the exterior gel coat, to anchor and seal the tube in place. You really need both kinds of products.
acassidy posted 05-21-2003 08:55 AM ET (US)
Like others said, 2 completely different products. Marine tex is an epoxy resin with a filler. It can be used to patch and fill fiberglass, steel and aluminum, sanded (with some effort), painted or gelcoated. 5200 is an adhesive sealant. Kind of like a glue/bedding compound. Because marine tex hardens, it is not as good for sealing /bedding around something that is installing through fiberglass or wood like 5200. Replacing a drain tube with 5200 would work fine. I would keep all different products that are available to you in your arsenal for repairing your boat. Don’t be overwhelmed by the amount of stuff available. They all serve a purpose to make our lives easier. Archie

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Author	Topic: 5200 vs Marine Tex
Cpt Quint	posted 05-20-2003 05:20 PM ET (US) Do you need both? One better or worse? I use both. To me,5200 gives a permanent yet rubberized bond. Marine tex is more of a fiberglass bond that can be farred and sanded. I dislike having too many different products around. These are used in close related repair issues by members here. To me they do serve different uses. 5200 would seal a drain tube whereas MT would patch a chipped surface. Im curious by poll if you think the 5200 replaces MT or each have certain qualities that arent always interchangeable.
acseatsri	posted 05-20-2003 05:29 PM ET (US) Two COMPLETELY different products with different uses. 5200 is an adhesive sealant, Marine Tex is a filler
Morocco	posted 05-20-2003 10:47 PM ET (US) I keep both on the boat because they do different things well: I use 5200 (or 4200) for bedding/caulking/adhesing things that need a flexible, waterproof and usually permanent bond -- my trim tabs are attached to the hull with this stuff, which also serves to bed and waterproof the screws. I am never worried that my tabs are going to fall off. Marine tex, on the other hand, is my number one choice for a hard repair -- filling a stripped hole or bonding the hard plastic tube that runs between my rear sumps when it broke off (that watertight repair, which was 'temporary' is still in service because it is just perfect and I hate fixing things that are no longer broken...) Marine tex is a hard epoxy and 5200 is a flexible, soft adhesive. You need both. If anything, I don't carry any other epoxy than the MT. As for drain tubes, when I replaced my corroded brass tubes with plastic, I used a softer adhesive caulk around the body of the tubes where they meet the foam, and a hard MT to make a 'collar' at the exterior gel coat, to anchor and seal the tube in place. You really need both kinds of products.
acassidy	posted 05-21-2003 08:55 AM ET (US) Like others said, 2 completely different products. Marine tex is an epoxy resin with a filler. It can be used to patch and fill fiberglass, steel and aluminum, sanded (with some effort), painted or gelcoated. 5200 is an adhesive sealant. Kind of like a glue/bedding compound. Because marine tex hardens, it is not as good for sealing /bedding around something that is installing through fiberglass or wood like 5200. Replacing a drain tube with 5200 would work fine. I would keep all different products that are available to you in your arsenal for repairing your boat. Don’t be overwhelmed by the amount of stuff available. They all serve a purpose to make our lives easier. Archie