Which timber is best for an outdoor porch balustrade?

[torabora851]

Hi, 

I have a small porch in the backyard. It's 0.5m high and under a pergola. I'm going to build a wired balustrade. What is the best timber to use there? Thank you!

[MitchellMc]

Hi @torabora851,

For a premium look, I'd be going with Merbau posts and handrail. They'll look fantastic combined with the stainless steel wired balustrade.

Please let me know if you have further questions.

Mitchell

[torabora851]

Thank you @MitchellMc !

Is there a thinner alternative to 90mm posts? I’m afraid they would look too massive for the low balustrade.

[Nailbag]

Hi @torabora851 

I agree with @MitchellMc  with both Merbau for the post and handrail. And no you can't get less than 90mm posts off the shelf, but your can get them reduced at some more specialised timber yards. But 90mm posts will balance out if you use 42mm x 140mm as the handrails, which I have built a few versions of.

Nailbag

[JacobZ]

Hi @torabora851,

As @Nailbag has already mentioned, unfortunately, smaller dimension merbau posts are not typically available.

While the height of your landing does not legally require a balustrade, it is usually best to construct things in line with the National Construction Code and the generally accepted principles around their construction.

Wire balustrade systems need to reach a certain level of tension which can be seen in the National Construction Code Part 3.9.2 Barriers and handrails. 

Using the standard 90x90 post, you won't have any issues reaching this level of tension, but smaller timber members might not be sturdy enough for the wires to reach the required level of tension. If you wanted to alter your design outside of what is standard, I'd suggest speaking with a carpenter or licenced builder for their assistance to ensure it is made to a safe standard. 

It might be worth heading in-store so you can see and feel the posts, I think you'll find that 90x90 posts are not as obtrusive in person as you'd think.

Let me know if you have any further questions.

Jacob