Main Menu

New boat

Started by Malcolm X, December 21, 2011, 21:23:42 CET

Previous topic - Next topic

0 Members and 1 Guest are viewing this topic.

Malcolm X

ok thanks for your help
2011 Marinello 17fisherman selva 80hp efi

The_Gaffer

#16
Applying the west system water barrier is only one third of the challenge.  Your biggest challenge is preparing the hull and bottom before application.  First mark the hull where the waterline will be.  Then you need to sand down the glazed gelcoat, preferably using a 400 grit wet or dry sandpaper.  Once you have removed the glazing, commence washing down the hull and bottom.You need to use a special detergent to get into the gelcoat to remove all traces of mould release from the gelcoat.  Wash down with soft soap and water, and dry thuroughly.  

West system epoxy water barrier requires 6 coats, done one after each other.  As soon as the first coat is applied and becomes tacky, commence the second coat and so forth.  Make sure you follow the instructions on blending the epoxy+hardner to the barrier provided.  Apply each coat in a crossed way.  If your first coat was applied using horizontal passes, your second coat is to be applied using vertical passes.  Change passes with every coat.  This ensuress full coverage and proper adherence of the coats. 

Temperature is crucial, but I understand there are 3 types of harder you can use.  There is the fast hardner, the normal, and slow hardner, depending on the atompheric temperature when applying the epoxy.  Right now, I would opt for a fast hardner.  Apply using a 3 inch roller, ensuring an even spread throughout.  Change rollers for every coat.  

I believe the last epoxy coating also contains an anti-fouling compound that you add to the epoxy before applying it.  Compound colour is deep red, and this is mixed into the epoxy.  Once applied, allow for a few days to completely dry and adhere, then you can sand down (roughen up) using 250grit sandpaper.  Wash down with soft soap and water, and your bottom is ready for anti-fouling.  
Beneteau Antares 9.80 - Powered by twin Volvo Penta D4 225HP
     _\____
       /___ \
___ /_____\_______
|_______________/

Malcolm X

The first part is ready i sand the gelcoat  all i need is to wash it i alread bought every on the hardner is writen 206 slow hardner.
2011 Marinello 17fisherman selva 80hp efi

Malcolm X

ok than i will go to west marine and ask for a faster hardner.
2011 Marinello 17fisherman selva 80hp efi