Seriously, I am trying to get cement off some Nacra hulls. A friend had a driveway poured and the boat was next to it and the cement guys let cement splash all over the boat. Jerks.
So, it has a bunch of little gobs of cement stuck to the hull. I thought I could just pick them off, but I can't believe how strongly they adhered to the gelcoat! I picked a few small ones off, but some just won't come off and I'm worried about picking little bits of gel coat out if I chip the cement off.
I know Acetone is Ok on gel, but I don't know if it will do the trick. Muratic acid eats at cement, but I fear it will eat the Nacra, too.
I was also thinking about Penetrol and some other penetrating solvent like goof-off or PB Blast.
Any ideas??
Getting cement off hulls
-
- Rank: Mate
- Registered: Oct 02, 2002
- Last visit: Aug 13, 2020
- Posts: 214
Posted: Jul 24, 2014 - 11:06 AM
-
- Rank: Mate
- Registered: Jun 17, 2011
- Last visit: Sep 24, 2023
- Posts: 783
Posted: Jul 24, 2014 - 11:28 AM
I think acid will do the trick. Don't think you need the 50-50 mixture talked about in this link. I want to say I use 25% acid with success.
http://www.thehulltruth.c…cid-cleaning-hull.html#b
I don't think any solvent is going to help much.
Edited by bacho on Jul 24, 2014 - 11:35 AM.
--
Greenville SC
Offering sails and other go fast parts for A-class catamarans
-- -
- Rank: Mate
- Registered: Oct 02, 2002
- Last visit: Aug 13, 2020
- Posts: 214
Posted: Jul 24, 2014 - 12:40 PM
I'll try that--someone else suggested CLR for exactly what I'm dealing with. -
- Rank: Master Chief
- Registered: Jun 20, 2006
- Last visit: Apr 06, 2024
- Posts: 7088
Posted: Jul 24, 2014 - 02:39 PM
wow - that blows - i think the cement company should cover the cost -
- Rank: Mate
- Registered: Oct 24, 2013
- Last visit: Jan 13, 2024
- Posts: 249
Posted: Jul 26, 2014 - 11:42 AM
Maybe pressure wash the hulls the cement should come off
--
Carl
Dart 18x2
Nacra 5.8
1967 B-LION for sale
1985 Hobie 18
Windrider Rave x2 for sale
-- -
- Rank: Lubber
- Registered: Sep 24, 2009
- Last visit: May 17, 2019
- Posts: 96
Posted: Aug 02, 2014 - 12:35 PM
I have used muratic acid in a 2:1 (2 water:1 acid) mixture to remove mineral deposits off my hull with excellent results. Just wear gloves.
Users on-line
This list is based on users active over the last 60 minutes.