[81turboporsche]

the expansion bolts are pretty simple to use basically its a long bolt with a metal sheath around it and at the end it has an angled flange that when you tighten the bolt the metal sheath spreads , they are very inexpensive and basically all u need for them is a drill and a socket or adjustable wrench , the grout with also work ,you might want to look into something else if its a constantly wet area , the worst this for any wood is trapping moisture in , wood can always get wet but when it doesnt get a chance to dry then you have a problem , also pressure treated buckles after getting wet so make sure to use three or four if you decide and you should be good to go