Sjøtroll fish farm
Lerøy, a Norwegian salmon company, recently completed construction of a new farm complex for breeding and raising fish on an industrial scale in Fitjar, on the west coast of Norway. It is one of the largest of its kind in the world and cost around 65 million Euros. The plant also adopts cutting-edge technology to farm the salmon, which are normally transferred from fresh water to salt water when they reach a weight of 180 grams. Thanks to this technology, the salmon can remain in the fresh water until they reach 500 grams, which reduces the risk of them catching lice.
More than 18,000 m2 of surfaces in the tanks at the farm were waterproofed with PURTOP 1000 two-component, solvent-free, pure polyurea membrane, which was applied by spray. PURTOP 1000 features a high level of elasticity and excellent resistance to abrasion. It is completely waterproof and suitable for contact with potable water, properties which will guarantee a high level of durability for the tanks and protection for the fish.
Langavatn water treatment plant
The Langavatn water-treatment plant is situated 30 km to the south of the city of Stavanger in south-west Norway. Construction of the plant got underway in 2014 and was completed, thanks to an investment of more than 100 million Euros, in 2019. The plant, which extends over an area of 21,000 m2 with a building covering 9,700 m2 of the plant, has 44 tanks spread over two levels that treat the water and then supplies potable water to around half a million people.
Mapei AS supplied products such as MAPEPOXY L*, REDIREP 45 RSF* and CONFIX* to treat various concrete surfaces and to seal cracks before bonding and grouting 6,000 m2 of ceramic tiles with KERAPOXY. Apart from these products, ZINKBOLT* expansive mortar was used to anchor the bolts to the rocks and PLANITOP SMOOTH & REPAIR and PLANITOP FINE FINISH were used to skim and finish off the surface of concrete.
Fredrikstad on-shore fish farm
Fish-farming on an industrial scale in Norway has to face many challenges, such as the fish dying, diseases, polluted seawater, the excess use of medicines, etc, and to help overcome these challenges, Norway’s first ever on-shore fish farm has been built in the south-west of the country. Because the client specified the use of products with high performance properties and excellent mechanical properties, Mapei systems were chosen to waterproof the tanks and to treat the concrete water pipes connected to the water treatment plant.
Going into detail, the substrates were treated with MAPEPRIMER M* epoxy primer before applying around 7,000 m2 of PURTOP 1000 membrane, which was chosen because it is suitable for contact with drinking water, is highly flexible, has high waterproofing capacity and creates a very smooth surface which can help protect the fish. Also, MAPECOAT DV* solvent-free epoxy coating was applied on 700 m2 of surfaces.
*These products are manufactured and distributed on the Norwegian market by Mapei AS.