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How to join stringers together?

I want to run steps up to a 1.6M high deck. I like the look of these black "Peak" stringers, but Peak do not make the 7-step that I would need. I'm considering putting in a post /lintel and running the 5-step from it up to the deck. I would then bolt the 2-step to the bottom riser of the 5-step and the bottom of the 2-step would be bolted into a concrete pad at the base.

Are there any issues I've missed? Has anybody done this? Thanks in advance for any contributions.

with 1.2M treads

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EricL

Hello @luckyphil

Thanks for sharing your question about the Peak stair stringers. The maximum height that Peak produces is the seven-step but it only goes up to 1320mm. Not tall enough for your needs, I suggest having a look at the Galintel 8 Tread Heavy Duty Galvanised Steel Stair Stringer - 2 Pack or the Stringer Merbau Suits 9 Tread. Both of these stringers can be painted in black.

It is possible to weld the Peak stringers together to form a taller unit however, once you do that, it will no longer be covered by the warranty.

Here are the links for the stringer brochures:

If you need further assistance, please let us know.

Eric

luckyphil

https://www.workshop.bunnings.com.au/discussion/comment/23450#Comment_23450

Thanks Eric

You are, of course, correct. A slap forehead moment! Perhaps I should have consulted my own notes.

I had been thinking about a 7/2 or a 5/4 combination with an intervening landing. When I came up with the no landing idea, I started typing too quickly and mixed them up. I was aware of the no warranty on welded pieces limitation, but I hoped that putting support under it might do. I guess that black letter rules don't bend.

The Galintel looks like a good product, but only supports 900 treads. I'm wanting 1200, so that would need a third stringer.

The Merbau looks lovely, but is a bit expensive. And painting it would be a sin!

I think I'm back to either

a) the Peak with an intervening landing or

b) a TP or HW timber DIY

A bit more pondering to do..

Thanks for the help

MitchellMc

Keep us updated, @luckyphil and reach out if you need further assistance or have questions; we're here to help.

Mitchell

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