Forums » Ask a Question

Use this forum to post your questions to our experts – you need to be logged on to do it (you can register here ), then scroll down to the bottom of this page and click the blue Post Thread words

If you can help answer the question, feel free to post a reply – you need to be logged on to do it (you can register here ), then hit the reply button on the thread.

 

To go back to the experts page click here>>

AuthorMessage
romanyprin
romanyprin

Posted: Sat Feb 27, 2016 4:32pm

Post Subject: painting

Can somebody please tell me if it is correct that the bottom of a narrowboat is not painted when routinely blacking below the waterline? Many thanks, Stuart

Tony-B
Tony-B

Posted: Sat Feb 27, 2016 5:07pm

Post Subject: painting

There are mixed views on this. People who apply two part blacking that is far tougher than tar or bitumen based blackings advocate blacking the bottom. Some people also black the bottom with tar or bitumen based products. However remember on a slipway or in a dry dock access to the base plate may be very difficult, if not impossible. It is said that there is far less oxygen in the water at base plate level so corrosion is greatly reduced making blacking unnecessary but I am not so clear on this. With a modern boat with a 10mm + base plate it would take very many years for an un-blacked base plate to corrode sufficiently to cause concern unless the steel is of very poor quality or you have mains onboard without sufficient protection. I suppose the answer is to black the base plate if you can or if you can afford to but remember that the smallest puncture may tend to concentrate any electrical corrosion into a small area.

romanyprin
romanyprin

Posted: Sat Feb 27, 2016 8:58pm

Post Subject: painting

Hello Tony-B, many thanks for your reply, especially your point about concentration of galvanic action to any punctures in painted surface, I will leave it 'as is', Regards stuart

Most Read

Newsletter Sign Up

Canal Boat monthly newsletter
Sign up to receive our regular email newsletter

Our Privacy Policy

Like us on Facebook



Follow us on Twitter

Cache: Disabled for this object  Total Queries: 43.  Total Objects: 162.  Total Unserialized: 3. Total Runtime: 0.29 seconds.