How to redo the wood on a brick and wood fence?

tally

I want to redo the wood on this fence.  I am thinking of using Merbau 90mm decking boards between the bricks columns and have been debating whether to do the mounting posts with normal timber (like 66mm x 42mm) or using Whites Screen up mounting posts instead - appreciate thoughts on this 

The longest span is 4.2 m - is that going to be too long?

Interested in hearing any thoughts / suggestions on the feasibility of this idea.

would also be keen on thoughts about a different timber option instead of the Merbau decking if we wanted to paint it white instead of the Merbau wood look - but still needs to be strong and durable (perhaps something like 92mm x 18mm H3 exterior grade timber for slats instead).  Not sure if the Merbau is stronger/ more durable/ less likely to warp than this?

thanks for your help and suggestions

Tally

Dave-1

Afternoon @tally 

Welcome to the community 🙂 There are loads of answers for this type of fencing, you just may get lost wandering through them 🙂 

If you use merabau I am not sure how well it will come up trying to remove the stain that comes with it. There is a 86 x 19mm Spotted Gum KD Standard Decking - Linear Metre that may be suitable. I am thinking you need some support posts probarly max-ish avery 1.5m as the timber will twist if given half a chance. You could use floating timber posts or even thin strips of steel to give the seperation between the boards you want.

What seperation between the boards are you thinking of? I also hve been thinking of these Jack Matrix 1800 x 900 x 6mm Charcoal Ferns Screen Panel with some rails mounted behind to give support as they are resonably flexible. For the longer spans you would need a middle post at least to support the 4.2m of rails.

The boards you have shown dont look too bad, you could redo them ? Tho the flaoting support posts or strips every 1.5m ish would stop that sag.

Dave