Bonda G4 Pond Sealer Clear 500g

Good product at Good price

Very good stuff. Take note that once open use it all in a few days. Otherwise it block the lid and you can’t open it again.

Very easy to use. Advise to use in a well ventilated area or outside (which it would be if sealing a pond - I was fixing a leaky birdbath). Followed the instructions and it did the job. Be aware it’s not totally clear - dries to the colour of yellowish varnish. However this didn’t bother me or the birds.

Easy to apply and has sealed the leaking cracks on my bird bath.

I think the sealant is good as far as a sealant is concerned. However, it does dry a slight golden colour which changed the look of the bird bath I had painted.

I used this on my concrete bird bath which had started to leak after 15 years of service. Regular scrubbing had worn the surface away and made it porous. I followed the instructions. Cleaning it off and ensuring it was dry and dust free before I started. You need to brush 4 thin coats, about 1 to 11/2 hours apart. Too soon and it will still be tacky, too long between and the surface dries too much for the next to adhere properly. Leave it to prove for two or three days before filling it with water.It is best done outside because of the fumes but you need a dry day. Use a cheap brush, between coats wrap it in a poly bag and then dispose of it. It will set rock hard. I did it back in August and 4 months later it’s fine. Can’t say whether it will withstand the freezing over the coming winter but time will tell.I then decided to have a go at my previous bird bath. I had relegated it to being a garden ornament when I bought my current one because it had started to leak. At almost 40 years old it had deteriorated to such an extent that the sides had almost separated from the base and there was a hole at one point. Cleaned this one then started to repair it using a mixture of exterior polyfilla and PVA Bond. Gradually filling the hole and all the cracks and fissures over several days, using thin layers. Then covering inside and out with a smoothing surface. Once it was thoroughly dry I then used the sealant as before. I now have two working bird baths.

Three coats on a leaking concrete bird bath, looks to have done the job nicely. It darkens the concrete and leaves a varnish like Finnish but more importantly no leaks!

Used this to seal the inside of a traditional stone trough which we are using for a water feature. Seems to have done the trick with no visible seepage but it is a pretty expensive product.