Quite possibly the most important part to any Koi pond!

It is THE single most commonly asked question we're given by Koi pond owners. How do I seal my Koi pond? How do I repair the seal on my existing Koi pond? How do I reseal my Koi pond? How do I repair a leaking Koi pond?

We promise you one thing. There is nothing more irritating on the face of the planet than a leaking Koi pond. Don't go there. Don't even think about it!

We've gone through a lot of pond sealants in our time. We have seen fibreglassed ponds leak. We have seen gunite ponds leak. We have seen three foot thick concrete shells leak. We have seen more ponds leak than we care to remember.

The best sealant for a Koi pond in our humble opinion, formulated by the school of hard knocks and hard earned experience is the MatCrete system from CemCrete. It is an easily applied solution to a plastered surface and it works!

We have detailed a series of brochure for you about the MatCrete system. They are quite large but they are well worth the effort of downloading them since they will tell you everything you need to know to ensure a successfully sealed Koi pond!

MatCrete overview brochure (400KB)

MatCrete Application Guide Page 1 (4800KB)
MatCrete Application Guide Page 2 (4000KB)
MatCrete Application Guide Page 3 (4100KB)
MatCrete Application Guide Page 4 (4100KB)

We suggest that you apply three coats of MatCrete to your Koi pond to ensure it's integrity.

You can order MatCrete from our online store (under Pond Sealants). We do a sale or return basis on the products - in other words if you order too much we will credit you for any unopened product returned to us.

We suggest Charcoal for 100% of all Koi Ponds...