sealing/painting a pond

versioncity · 2 Aug 2017

Hi.
The ponds at my mums house are leaking and I was going to try and clean out and re-seal over the summer.

First:
They are concrete with some sort of painted fibreglass (?) sealant. (which is leaking)
This is at least 30 years old.
Do I remove all this first or simply go over over it with a modern paint?

Second:
i was looking at A1 Pond paint made by Antel. Would this be suitable for the job? Any thoughts or recommendations of brands?

thanks

HERTS P&D · 2 Aug 2017

If it is fibreglass then you can repair it with fibreglass sheeting over the leak, if you can fit it. Then you would have yo sand the area (or whole pond) and apply flow coat with is a 2 pack sealer.

Post some pictures of the pond and if possible the leak.

Andy

versioncity · 2 Aug 2017

The fibreglass is in a bad condition and split in various places, so I was thinking of going over the whole thing with a new sealant but thought I may need to rip it all off and start again on the concrete. ?

JBR · 2 Aug 2017

Or you could line it with a bitumen sheet.

How big is your pond?

freddiemercurystwin · 3 Aug 2017

Or just recoat the grp with another layer, plenty of kits available, sanding down the existing to get a good bond, last another 30 years then. GRP is used extensively in commercial aquariums and the like, as a tank lining, it's considered to be the best material for the job.

versioncity · 3 Aug 2017

3 ponds in all.
two are around 8ft long by 4ft wide and then one small one about 2X2ft.

Yes maybe using the same stuff again is a good idea - any idea what brand/ type - link?
I think it has actually been around 40 years that the other stuff has been on for, so it obviously works.

versioncity · 16 Aug 2017

some images attached. Not sure what the sealer/paint is.
Ideally would like to simply go over the top of it rather than remove it.

r896neo · 16 Aug 2017

I'm not sure that is fibreglass? due to the nature of working with it fibreglass preparing the base for easy layups means they must be pretty smooth. The hollows and lumps in your suggest it was not layed up with fibreglass matting.

Its very hard to tell from phots what is damage what is dirt etc so i wouldnt rule out fibreglass, best bet is to Open up one of the cracks and if you see fibreglass mat in there you can be sure that is what it is. You would need to thoroughly clean and prep the area if using fibreglass to go over that lot

HERTS P&D · 16 Aug 2017

That is passed help, either fill it in or dig it out and redo it.

A nice koi pond wouldn't go a miss.

If you have small children then leave it a few years or build a raised pond for safety.

Andy

freddiemercurystwin · 16 Aug 2017

HERTSDRAINAGE2010 said:
That is passed help, either fill it in or dig it out and redo it.

Maybe, certainly needs a pressure wash to see whats what, can't see a thing with all that muck.

diynot

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sealing/painting a pond

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