Ok to use muriatic acid to wash fiberglass trihull?

[Myfirstboat86]

Will this damage or weaken my hull? Muriatic acid deluted down with fresh water. i was told it removes water lines.

 

[Philster]

Re: Ok to use muriatic acid to wash fiberglass trihull?

Trailers don't like it. Rinse it off the trailer if you use it.

 

[coastalrichard]

Re: Ok to use muriatic acid to wash fiberglass trihull?

Rinse WELL after use, wear long rubber gloves and don't breathe the vapors

 

[Vankaye]

Re: Ok to use muriatic acid to wash fiberglass trihull?

I recommend using sno-bol toilet cleaner cut about 50/50 with water.

Also, buy yourself a cheap roll of visqueen and cut a few long pieces to drape over your trailer. Some tape or bungee cords will keep the plastic from being blasted off buy the hose or a breeze.

I always had to fight tannic (sp?) acid stains here in the Florida lakes and the sno-bol did a great job for around 2 bucks a bottle. I also used a pump sprayer to spray it on fast. Have your hose at the ready and rinse it off as soon as the stains disappear. No scrubbing needed. Even with the extra prep work its still easier than scrubbing!!!

 

[NHGuy]

Re: Ok to use muriatic acid to wash fiberglass trihull?

There's a gel acid wash that's especially for boats. I used it this past year with good results. MaryKate On & Off. Works well. And they warn you to keep it off the trailer. I covered my rails and everything I could with plastic bags.

 

[JB]

Re: Ok to use muriatic acid to wash fiberglass trihull?

There's a gel acid wash that's especially for boats. I used it this past year with good results. MaryKate On & Off. Works well. And they warn you to keep it off the trailer. I covered my rails and everything I could with plastic bags.

Good advice. They are oxalic acid and not dangerous.

 

[RubberFrog]

Re: Ok to use muriatic acid to wash fiberglass trihull?

I use some oxalic acid stuff I get from west marine. I squirt it on a sponge and gently rub it on the hull. No scrubbing or work involved. I rinse it off after a minute or two. No need to cover the trailer because I am not spraying acid everywhere. I do wear rubbergloves.

 

[Fl_Richard]

Re: Ok to use muriatic acid to wash fiberglass trihull?

I use some oxalic acid stuff I get from west marine. I squirt it on a sponge and gently rub it on the hull. No scrubbing or work involved. I rinse it off after a minute or two. No need to cover the trailer because I am not spraying acid everywhere. I do wear rubbergloves.

I use Sprinkler rust remover from Home Depot. Comes in a gallon container for 8 bucks. Way better than 12 bucks a pint at West Marine.

It has a higher concentration too so I cut it with water.