Van Stokkum Natuursteen bv., a specialist in realizing complex natural stone buildings, laid 4,000m2 of outdoor flooring at the station. For this, the company used Porfido Trentino stone. The use of this stone in a Romanesque setting is unusual in the Netherlands and is a real eyecatcher. Sealing the expansion joints called for a sealant that is permanently elastic, durable and resistant to heavy loads. ‘In order to be able to guarantee a good bond on natural stone, we first conducted a bonding test. SABA Sealer Field came out best in that test,’ says Bas van Gestel, manager at Van Stokkum bv. This is a sealant that not only has the above properties, but is also easy to maintain.