I have built two sturdy gateposts from four 70x70mm pressure-treated posts joined with 45x95mm beams and stainless steel threaded rods. The whole assembly is anchored in concrete foundations, and the size is 23.5 x 23.5 x 150 cm. So far, everything is fine; they are excessively stable.

But now I need to clad them with something so that they actually look like gateposts. The most natural choice would be painted tongue and groove boards. But what other good and not too expensive options are there?

I considered hardboard, but are today's untreated boards labeled "board" the same as the hardboard that was used for house facades in the past? I.e. can it be used (painted, of course) outdoors? There is something called oil-tempered board as well, but surely that can't be painted on?

Then I thought of laminate. I have an old bathroom with "Perstorp panels," thin about 2mm large wall panels with plastic strips along the edges. But as soon as I try to google laminate, Perstorp panel, and the like, all I find are laminate boards, i.e. particle board covered with laminate. Are there thin "panels" that work outdoors?

Plywood is perhaps also an option, but I've been under the impression that it's quite sensitive to moisture. Even if the large surfaces are painted, there's a risk that moisture will get to the sawn edges, even if you use some kind of corner trim. I assume they swell and deteriorate quickly then?

What do you recommend? Is there some miracle material I haven't thought of? It must, of course, withstand outdoor use, sun/rain/etc.
 
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H hydrolift said:
Maybe something like this?
[link]

You can screw with decking screws so that the screw heads aren't too visible. Mounting screws might be a bit vulgar.
That one sounds really good! I seem to recall looking at something similar a long time ago, but that I read they were quite fragile and cracked easily, but maybe it was a different type of board I read about.
 
N NightRider said:
I have built two solid gateposts from four 70x70mm pressure-treated posts joined with 45x95mm beams and through stainless steel threaded rod. The entire structure is anchored in concrete foundations, and the size is 23.5 x 23.5 x 150 cm. So far, everything is good; they are excessively sturdy.

But now I need to clad them with something so that they actually look like gateposts. The most natural option would be painted boards. But what other good and not too expensive alternatives are there?

I considered masonite, but are today's untreated sheets labeled "board" the same as the masonite used for house facades in the past? That is, can it be used (painted, of course) outdoors? There's something called oil-hardened board as well, but can it be painted on?

Then I thought of laminate. I have an old bathroom with "perstorps panels," thin about 2mm thick wall panels with plastic strips along the edges. But whenever I try to google laminate, perstorps panel, and similar, all I get are laminate sheets, i.e., particleboard covered with laminate. Are there thin "panels" that work outdoors?

Plywood might also be an option, but I have the impression that it's quite sensitive to moisture. Even though the large surfaces will be painted, there's a risk that moisture can get to the sawed edges, even if you put some form of corner trim. I assume they swell and become useless quite quickly then?

What do you recommend? Is there some miracle material I haven't thought of? It obviously has to withstand outdoor use, sun/rain/etc.
Maybe a skirting board? https://www.k-rauta.se/produkt/sockelskiva-cembrit-rock-coal-12x595x2550mm/6418662931466
 
H
N NightRider said:
I have built two sturdy gate posts from 4pcs 70x70mm pressure-treated posts that are connected with 45x95mm beams and stainless steel threaded rods. The whole assembly is anchored in concrete foundations, and the size is 23.5 x 23.5 x 150 cm. So far, so good, they are extremely sturdy.

But now I need to clad them with something so that they actually look like gate posts. The most natural option would probably be painted tongue and groove. But what are some other good and not too expensive alternatives?

I considered masonite, but is today's untreated board called "board" the same as the masonite that was used for house facades before? That is, can it be used (painted, of course) outdoors? There's also something called oil-hardened board, but that can hardly be painted on, right?

Then I thought about laminate. I have an old bathroom with "perstorps panels," thin around 2mm large wall panels with plastic strips along the edges. But as soon as I try to google laminate, perstorps panels, and the like, I only find laminate sheets, i.e., particle board covered with laminate. Are there thin "panels" that work outdoors?

Plywood might also be an option, but I have the impression that it is quite sensitive to moisture. Even if the large surfaces are painted, there is a risk that moisture will reach the cut ends, even if some form of corner trim is used. I assume they will swell and deteriorate quite quickly then?

What do you recommend? Is there a miracle material I haven't thought of? It must of course withstand outdoor use, sun/rain/etc.
Maybe completely off track here, but I'll write it anyway, there are thin sheets with brick cladding.
 
H HEM2121 said:
Maybe completely off track now, but I'll write it anyway, there are thin slices of clad brick.
Where can I find them? I googled but only found various loose stones (at least that's what it looks like)? Is it called "clad brick"?
 
H
N NightRider said:
Where can I find them? I googled but only found various loose stones (that's what they look like anyway)? Is it called "facade brick"?
I'm not entirely sure about the name, I recall that Bauhouse had this earlier, looked 10 years ago, it might be called brick wall, checked quickly but it doesn't seem like they come in large panels anymore. The largest I see is 30.5x30.5 cm, in sheets. The first time I saw it was at Praktiker in Poland, but that major chain no longer exists. But there are more places in Poland. Google facade brick, some results come up that might be interesting for you.
 
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