My current wooden fence being some 15 years old with 3 x 3 posts 4ft high in the ground with individual panels.
It is now needing replacement before the winter. My plan is to use 'post spikes' in the ground helping the posts from rot, using '75 x 47' x 3 rows of horizontal rails and attaching 'feathered edge' boards vertically at 1.8mts high on top of wooden gravel boards.
My question: As the current 1.2mt high posts survived some 10/15 years in the ground and now wanting to use spikes. But increasing the height to 1.8mts and that the posts will at 1.8 cts. Would 3 x 3 posts be sufficient @ 1.8 high or should I go for 4 x 4 posts.
It is now needing replacement before the winter. My plan is to use 'post spikes' in the ground helping the posts from rot, using '75 x 47' x 3 rows of horizontal rails and attaching 'feathered edge' boards vertically at 1.8mts high on top of wooden gravel boards.
My question: As the current 1.2mt high posts survived some 10/15 years in the ground and now wanting to use spikes. But increasing the height to 1.8mts and that the posts will at 1.8 cts. Would 3 x 3 posts be sufficient @ 1.8 high or should I go for 4 x 4 posts.