Durability　of　photocatalytic　coatings　is　a　major　concern　in　engineering　practice.　Here,　two　types　of　novel　visible　light-responsive　coatings,　both　consisting　of　vinyl　chloride/vinyl　ester/ethylene　copolymer　(as　a　binder)　and　graphitic　carbon　nitride　(g-C3N4)　but　different　in　fabrication,　are　proposed　and　applied　on　the　mortar　surface.　The　first　type　is　mono-layer　coating　(MC),　where　the　g-C3N4　suspension　containing　the　binder　is　directly　sprayed　on　the　mortar.　The　second　type　is　double-layer　coating　(DC),　where　the　binder　layer　is　applied　on　mortar　surface　before　spraying　the　g-C3N4　layer.　Results　show　that　the　binder　addition　leads　to　a　good　anchorage　of　the　coatings　on　both　MC　and　DC　mortar　substrates,　along　with　desirable　resistance　to　peeling　and　washing,　compared　to　the　g-C3N4　coated　mortar　without　the　binder.　The　well-distributed　binder　in　g-C3N4-based　coating　inevitably　decreases　the　photocatalytic　efficiency　of　the　MC　mortar　due　to　masking　effect　of　the　binder　on　the　coating　surface.　The　DC　mortar,　on　the　contrary,　takes　full　advantage　of　the　binder　adhesion　by　inserting　a　binder　layer　and　therefore　holds　strong　resistance　to　peeling　and　washing　without　compromising　its　photocatalytic　efficiency.　The　proposed　DC　technique　provides　a　promising　strategy　to　fabricate　highly　cost-effective　and　durable　photocatalytic　coatings　applied　on　cementitious　materials.　(C)　2019　Elsevier　Ltd.　All　rights　reserved.