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Wet sand dull "white gray" gelcoat

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toholthe View Drop Down
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    Posted: 07 December 2018 at 11:55
The gelcoat on the ship sides of my Hanse 400 2007 is quite dull on the foreship. From the shrouds back it looks ok and keeps glossy all season after a good wax in the spring. The boat has a very light gray color. The front part of the boat quickly becomes dull when looking close.

I met a guy last summer who had sanded a small part of his boat and that looked like new. I am therefore thinking of using Abralon wet sanding pads and try and restore the gelcoat to new shape. The light gray is easier to hold than the darker colors, so this should hold a new 10 years.

I am thinking of starting with 500 grid then 1000 - 2000 - buff - polish - wax.

Have anyone tried this procedure? Is it a lot of work? I am only doing the front part of the boat.
It seems unlikely to sand through the gelcoat as it is quite thick, but did you do this if you tried?

It does not show easily in a picture, by you can clearly see on the dark decor stripe where the dullness is.




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Rubato View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rubato Quote  Post ReplyReply Direct Link To This Post Posted: 07 December 2018 at 17:37
I was discussing the very same problem with our 2007 light blue Hanse with a local fiberglass repair expert. He recommended exactly as you are proposing. In fact, after a bit of a scuffle on a start line earlier this year, he did this process on a few small sections of one side a and it worked out beautifully. However, as you suspect, it is a lot of work.

Steve

Hanse 400e, #168
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samuel View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote samuel Quote  Post ReplyReply Direct Link To This Post Posted: 07 December 2018 at 22:24
As well as my Hanse I have a Squib keel boat & my crew spent a few hours sanding the gell coat & that came up as new. So apart from the fact it is a lot of work I think that you will find it rewarding.

I did have a problem with the blue strip on my Hanse at the waterline fading very badly. Blue is notorious for the white discolouration in the gel coat.

I found that buffing it with an electric polisher, fitted with a lambs wool pad, using an oven cleaning paste (Aspire)  & also Ajax, powder, cleaner, worked & restored it to the original blue. Perhaps you might try something like that first, as it is slightly less abrasive & less work to apply.
Daydream Believer- Hanse 311- No GBR9917T- Bradwell Essex
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Captain Cook View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Captain Cook Quote  Post ReplyReply Direct Link To This Post Posted: 07 December 2018 at 22:36
We owners of the older Hanses see the signs of age on the ships - just like ourselves, the ship becomes a little dull in the lines as years pass by. I do not have the energy or patience to sand the hull, but I have used metal polish (for cars) to freshen up the gelcoat. This polish removes anything from the fibreglass, even hard deposits on the waterline.
In Scandinavia you can buy it at Biltema, order no. 36-48.
Freya Hanse400#27
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