On advice here I went and bought a load of :
Bolting down with 10mm Thunder Bolts
First off impressed Toolstation didn't have the 22 of them I needed ... they took order for 17 shortage for free delivery to home address ... don't offer Sat delivery, but I asked customer service and they said .. OK - sorted delivered today (BH weekend)
Anyway the Q ..... For 18 of posts they fit perfect as the posts are 100 x100 sawn
4 of the posts though are regularized planed as these are 2.4m long and will be on show (sawn posts all hidden)Unfortunately being planned means they are 92 x 92 ... so I need to fit an 8mm packer between post & fixing, and then screw through fitting/packer into post. Has to be something that will last years out doors.
Any suggestions of what to use ?
I could cut some strips of code 5 lead flashing ?
Seems a waste to go buy a sheet of 8mm wbp just to make four 35 x 100 packers.