AquaSeal® FlexPrimer is a high-quality water-based acrylate primer recommended especially for engineered flooring, including underfloor heating. It reduces edge bonding, for application beneath AquaSeal® finishes. AquaSeal® FlexPrimer features a medium grain enhancement and a neutral colour look. For an intense colour it is recommended you use AquaSeal® ExoBloc. You can apply this product on all floors sanded down to the wood base.