Sealant

wflowe2

wflowe2

.
Oct 15, 2009
220
catalina 320 Perry Lake
Going to replace a horn cleat used for the jib furling line on a '87 Hunter 28.5. The cleat is thru-bolted so it doesn't need much adhesion (eg 5200) but I'd like suggestions for a good sealant to use between the cleat and deck to prevent water leaks thru bolt holes.

Thanx
 
Brian S

Brian S

.
Nov 9, 2012
2,500
Oday 192 Lake Nockamixon
How to "pot" cored deck penetrations to prevent rot: http://www.pbase.com/mainecruising/sealing_the_deck

How to rebed using Bed-it Butyl Tape: http://www.pbase.com/mainecruising/rebedding_hardware

Where to get PROPER bedding butyl tape:
http://www.pbase.com/mainecruising/butyl_tape

If you don't want to use butyl tape after reading these articles DON'T use 5200. Maybe use 4200, or better, 3M 4000 or Boatlife Lifecaulk, following MaineSail's techniques of properly potting for core protection and countersinking the holes for greater fastener to sealant contact area.
 
py26129

py26129

.
Oct 25, 2011
576
Island Packet IP31 Lake St. Louis, Montreal
Use butyl tape. Easy to work with and it lasts. While you;re at it, order a roll from Mainesail.
 
G

gettinthere

.
Nov 26, 2008
1,970
Endeavour 42 Cruisin
Dont order from Mainsail just cause he's here helpin out.

Order from Mainsail because he did the testing to fit the application and manufactures a GREAT butyl, to his specs, and sells that..

I have some of what I thought was good butyl tape. But after 5 years it is drying out. The good stuff that mainsail is selling is significantly different than the first stuff I bought.
 
kito

kito

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Sep 13, 2012
2,011
1979 Hunter Cherubini 30 Clemmons
gettinthere said:
Dont order from Mainsail just cause he's here helpin out.

Order from Mainsail because he dis the testing to find the GOOD butyl and sells that.

I have some of what I thought was good butyl tape. But after 5 years it is drying out. The good stuff that mainsail is selling is significantly different than the first stuff I bought.
Click to expand
ditto
 
Joe

Joe

.
Jun 1, 2004
8,318
Catalina 27 Mission Bay, San Diego
I keep a small tube of polysulfide sealant in my boat box, just for this type of chore. I use Boat Life's "Life Caulk"
 
M

mm2347

.
Oct 21, 2008
243
oday 222 niagara
Be sure to countersink your holes. It will not only add area for the sealant to grip it helps prevent gell coat cracks from starting.
 
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