311 / 312 / 315 - Hull to deck sealant.

Print Page | Close Window

Hull to deck sealant.

Printed From: myHanse.com
Category: Hints & Tips
Forum Name: 311 / 312 / 315
Forum Description: 311 / 312 / 315 Hints and Tips
URL: https://www.myhanse.com/forum_posts.asp?TID=15377
Printed Date: 26 March 2026 at 23:38
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com

Topic: Hull to deck sealant.

Posted By: j_ohnno
Subject: Hull to deck sealant.
Date Posted: 01 October 2025 at 07:18

Hello all. Another 2020/315 question for the knowledgeable people here. The external bead of sealant in the hull/deck join is shrinking and hardening. I wonder if anyone knows exactly what brand and type of sealant is used there so I can replace like with like Thank you.

Replies:

Posted By: Wayne's World
Date Posted: 01 October 2025 at 09:05

Johnno,

Originally is likely to be Sikaflex 295UV. It needs replacing every 3-5 years depending on your sailing area.

-------------
Wayne W
Cruising, currently in the Pacific until the end of 2026.

Posted By: Mark_J1
Date Posted: 02 October 2025 at 14:08

Don’t know where you are in the world however builders merchants in the UK supply a sealant/adhesive called CT1. That’s a far better option than the original Sika. Lasts longer & easier to apply. Even sets in wet salt water conditions.

Mark

-------------
Hanse 400e "Grey Goose" Hull #31