Repair & maintenance: Removal of dark patches on a wooden deck

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Removal of dark patches on a wooden deck

Printed From: Yachts and Yachting Online
Category: General
Forum Name: Repair & maintenance
Forum Discription: Questions & tips on the subject
URL: http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=2656
Printed Date: 12 May 25 at 12:48am
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Topic: Removal of dark patches on a wooden deck

Posted By: ifoxwell
Subject: Removal of dark patches on a wooden deck
Date Posted: 05 Feb 07 at 9:30am

Not as a result of rot, just the result of removing old fittings and finding the area of deck that they sat on hasnt been bleached by the sun like the rest?

Any suggestions

Ian

Replies:

Posted By: Contender 541
Date Posted: 05 Feb 07 at 9:56am

bleach!!

A dilute solution of bleach applied with a cotton bud, or similar dependant size, should do the trick, but the colour match will be a problem. Probably best to then sand back over an area and revarnish

The other option is to totally strip and then restain the deck. A bit drastic, but the best result

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When you find a big kettle of crazy it's probably best not to stir it - Pointy Haired Boss

Crew on 505 8780

Posted By: jeffers
Date Posted: 05 Feb 07 at 12:53pm

We found that when we did the old woodie foreball that most dark or black staining came out once the deck was back to wood.

You may fond that if you strip and revarnish the lighter patches will blend in and not reaslly be noticable.

Paul

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Paul
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D-Zero GBR 74

Posted By: iansmithofotley
Date Posted: 05 Feb 07 at 4:25pm

Hi Ian,

The stuff to use is a solution of oxalic acid crystals. This topic has cropped up before. Just put 'oxalic acid' in the search facility on this site and you will see the previous threads.

Ian (Yorkshire Dales S.C.)

Posted By: Rupert
Date Posted: 06 Feb 07 at 7:39pm

It sounds from your post that it isn't dark patches that are the problem, but that the rest of the deck has faded. The answer to this is to be patient, and now you have no fittings in that area, the sun will fade it to the colour of the rest of the deck. Oxalyic acid and bleach are just about OK at getting rid of dark water stains, but won't help much here. If you sand the deck right back, you will sand through the sun bleached wood to new wood, but you will soon run out of veneer.

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