Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 30-07-2013, 10:18   #1
Registered User
 
Jolly Roger's Avatar

Join Date: Oct 2006
Location: Titusville, Florida - for the moment
Boat: Down East 45, Brigantine
Posts: 944
Images: 1
Waterproofing Biminis

We recently had a two hours horrendous downpour while out on our boat, and the cockpit enclosure leaked like a sieve. We need to waterproof it asap, and I would also like to deepen the color from Royal Blue to Navy Blue if possible.
I canít find any previous threads, so any suggestions of products would be appreciated.
__________________

__________________
How to build a square rigger? Find out at https://schooner-britannia.com/index.html
Member: Boating Writers International.
Also pages of sailboat items for sale
Jolly Roger is offline   Reply With Quote
Old 30-07-2013, 10:43   #2
Registered User

Join Date: Aug 2010
Location: Beaufort, SC
Boat: 2004 Hunter 41 AC
Posts: 308
Re: Waterproofing Biminis

We use a 303 product for this purpose, avail at West Marine and other marine stores. It works really well. We just recently did the Bimini but didn't have time to finish the dodger. The next day we got a shower. Under the Bimini was bone-dry, but the dodger still leaked big time. I'm very satisfied. I have heard of others using products like Thompson's water seal (normally used for wood decking, etc), but cannot comment on it.

I always used the spray bottle in the past, but just recently started using a 4" paint roller. What a huge difference. It's much easier, gets better coverage and you don't get spray in unwanted places (like your plastic). I don't know why I never did this before. I'll never use a sprayer again.

Hope this helps.
Scott
__________________

__________________
s/vPainkiller is offline   Reply With Quote
Old 30-07-2013, 11:33   #3
Registered User

Join Date: Apr 2007
Location: Jupiter FL
Boat: temporarily boatless...
Posts: 723
Re: Waterproofing Biminis

Ditto 303. I use it on my convertible top as well. I use the spray applicator, but the roller sounds like a good idea, although it would use up a lot of 303.

The main thing with 303 is that it's best to apply it to extremely dry fabric, and in direct sun is even better. pete
__________________
pete33458 is offline   Reply With Quote
Old 30-07-2013, 11:48   #4
Registered User

Join Date: Aug 2010
Location: Beaufort, SC
Boat: 2004 Hunter 41 AC
Posts: 308
Re: Waterproofing Biminis

I bought a gallon of the 303 a couple years ago since I wasn't sure how much it would take to seal the bimini and dodger. So I had plenty left and wasn't afraid of using a lot. Also, how often do you want to mess with this? I wanted a good coat and wanted it to last.

Another plus to the roller idea is that you can only spray when it is calm. You can roll it any time without fear of it getting everywhere. Like I said, I'm sold on rolling vs. spraying.

Scott
__________________
s/vPainkiller is offline   Reply With Quote
Old 30-07-2013, 12:18   #5
Registered User
 
Jolly Roger's Avatar

Join Date: Oct 2006
Location: Titusville, Florida - for the moment
Boat: Down East 45, Brigantine
Posts: 944
Images: 1
Re: Waterproofing Biminis

Thanks guys.
I just spoke to the manufacturers of 303 fabric guard. They suggested first cleaning the canvas with 303 fabric cleaner then spray on the fabric guard. The tech fella said the thing to watch for when rolling was over saturation. I guess it will not be difficult to mask off the side windows, but then I do have ten.
I will pick up both at my local WM store tomorrow.

Thanks again, Iíll report back when Iíve used it.
__________________
How to build a square rigger? Find out at https://schooner-britannia.com/index.html
Member: Boating Writers International.
Also pages of sailboat items for sale
Jolly Roger is offline   Reply With Quote
Old 30-07-2013, 12:20   #6
Senior Cruiser

Cruisers Forum Supporter

Join Date: Jul 2011
Location: Richmond, VA
Boat: Morgan 452
Posts: 130
Is it bad to admit that I thought the header said "waterproofing bikinis"? I couldn't figure out why you would want them to be waterproof!
__________________
CaptFrankM is offline   Reply With Quote
Old 30-07-2013, 14:37   #7
Registered User

Join Date: Jul 2013
Location: southwest pacific
Boat: farr 9.2
Posts: 7
Re: Waterproofing Biminis

Hi Jolly Roger,
Just a point about masking off the windows. I think it is better if you wipe the fabric guard off as you go, as it does affect the clear, and at least you can see where the overspray is. If you mask off, it seeps in under the tape. You dont see it until you unmask and get a nasty surprise. 303 fabric guard is the way to go for sure. As for the colour change, you would be best to wait till you are ready to re-new the canvas. Hope this helps,
Kim
__________________
southernupdate is offline   Reply With Quote
Old 30-07-2013, 16:35   #8
Registered User

Join Date: Dec 2010
Location: W Carib
Boat: Wildcat 35, Hobie 33
Posts: 7,944
Quote:
Originally Posted by s/vPainkiller View Post
I bought a gallon of the 303 a couple years ago since I wasn't sure how much it would take to seal the bimini and dodger. So I had plenty left and wasn't afraid of using a lot. Also, how often do you want to mess with this? I wanted a good coat and wanted it to last.

Another plus to the roller idea is that you can only spray when it is calm. You can roll it any time without fear of it getting everywhere. Like I said, I'm sold on rolling vs. spraying.

Scott
+1 on 303...great stuff Ive put a new coat on each season for a few seasons now...works great for about a season. Also coated my old leaky rain gear and worked well for that too.

Important that the material is very clean...any contamination and it will leak there.
__________________
belizesailor is online now   Reply With Quote
Old 30-07-2013, 16:49   #9
Senior Cruiser
 
Therapy's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: W Florida
Boat: The Jon boat still, plus a 2007 SeaCat.
Posts: 6,894
Images: 4
Re: Waterproofing Biminis

Another vote for 303.

Like any kind of "paint" prep takes longer.
__________________
Who knows what is next.
Therapy is offline   Reply With Quote
Old 31-07-2013, 17:55   #10
Registered User
 
CarinaPDX's Avatar

Join Date: Jan 2010
Location: Portland, Oregon, USA
Boat: 31' Cape George Cutter
Posts: 1,674
Re: Waterproofing Biminis

And another vote for 303.

The Sunbrella-approved method of cleaning is with an equal mixture of soap flakes and chlorine bleach diluted in water. Do not use detergent on acrylics. However, the clear windows need detergent, not soap. Nice trick if you can do it. I don't have experience with the 303 cleaner but would give it a try, right after the soap/bleach.

Never use silicone sealant (e.g. Thompson's) for anything on a boat, for the same reason that silicone sealants can be a problem: remnants of the silicone will remain for a very long time, and prevent anything else (cleaners, sealers) from working.

Greg
__________________
CarinaPDX is offline   Reply With Quote
Old 31-07-2013, 19:29   #11
Writing Full-Time Since 2014
 
thinwater's Avatar

Join Date: Nov 2008
Location: Deale, MD
Boat: PDQ Altair, 32/34
Posts: 4,333
Re: Waterproofing Biminis

Yes, some water proofers will ruin Strataglass. I've been doing some testing. Some destroyed it utterly in a very short time (too fast to wipe), others were more subtle and slower. Be VERY careful. If you have a scrap piece, test the product.
__________________
Gear Testing--Engineering--Sailing

Writing full-time since 2014.
Bookstore:http://sail-delmarva.blogspot.com/20...ook-store.html
thinwater is online now   Reply With Quote
Old 31-07-2013, 20:42   #12
Registered User
 
Kashmir cat's Avatar

Join Date: Mar 2010
Boat: Prout 46
Posts: 152
Re: Waterproofing Biminis

Thompson's Waterseal for wood decks works GREAT and is pretty cheap. My bimini has spent 14 years in the hot Florida sun and as a result has become quite threadbare. I can see the sun shining through small pin prick holes in it and it has stretched so much that it pools water in the middle. Two coats of Thompson's Waterseal, applied two years ago has kept it absolutely waterproof even in Florida downpours and it doesn't stain or change the color of the sunbrella.
__________________
Kashmir cat is offline   Reply With Quote
Old 01-08-2013, 19:00   #13
Registered User
 
Jolly Roger's Avatar

Join Date: Oct 2006
Location: Titusville, Florida - for the moment
Boat: Down East 45, Brigantine
Posts: 944
Images: 1
Re: Waterproofing Biminis

Okay, we bought some 303 cleaner and waterproofing yesterday.
My wife cleaned the whole enclosure early this morning, then allowed it to dry - which is no problem in Florida. She then sprayed the waterproof on using a cardboard shield to keep it off the windows.
It rained hard about 5pm this afternoon, and we were amazed to see rain running off the top of the cover like water down a creek.
If it only holds up for a year, Iíll be happy to do it again next season.
Thanks for everyoneís input. Very successful outcome.
__________________

__________________
How to build a square rigger? Find out at https://schooner-britannia.com/index.html
Member: Boating Writers International.
Also pages of sailboat items for sale
Jolly Roger is offline   Reply With Quote
Reply

Tags
bimini, water

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 12:56.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.