What is this plywood?

[vincentt]

I saw that a playground uses plywood that somewhat resists moisture... What kind of plywood is that?

 

[nimhed]

Marine plywood perhaps?

 

[vincentt]

Son for concrete casting?

 

[nimhed]

Do you mean formplyfa?

No, I'm thinking of plywood specifically designed for marine environments. Extra resistant to moisture and wetness.

 

[C.Lundin]

It is completely ordinary formplyfa.

 

[doubleH]

You mean film faced plywood?

No, I'm thinking of plywood specifically made for marine environments. Extra resistant to moisture and wetness

Even if the glue in marine plywood can withstand a certain degree of moisture, the wood still discolors if exposed to water for an extended period.
Even marine plywood needs to be treated with, for example, oil, varnish, or lacquer paint.
The plywood in the pictures definitely looks like film faced plywood (which, with modern, eco-friendly gluing methods, unfortunately has become more sensitive to prolonged moisture...)

 

[findus42]

It looks like filmed birch plywood. It comes with a woven pattern surface and is then called durk plywood. Such plywood is usually found on trailers. That plywood, if that's what it is, can withstand being untreated outdoors.

So-called form plywood from the lumberyard does not. It is a one-time use plywood. Made to release easily, not to withstand water.

Regards, Findus

 

[C.Lundin]

It looks like filmed birch plywood. Available with a woven texture surface and then called durkplywood. This is often used on trailers. That plywood, if it is such, can withstand being left untreated outdoors.

This is not the case with so-called formplyfa from the lumberyard. It is single-use plywood. Made to release easily, not to withstand water.

Regards, Findus

The "regular" one you're likely talking about shouldn't be used more than three times.

However, there is formplyfa that can stay outside for two years without taking any damage at all, as long as cut edges and seams are protected.

Simply put, different types and different qualities, as well as a huge difference in price.

 

[mlkjhr]

I also guess that it is formplywood.
It is definitely not ladugårdsplyfa.

 

[vincentt]

Well... It is rocket science... I've seen these at various playgrounds. I thought it's just some standard plywood for outdoor use, but wasn't really sure what. I guess these are available in well-stocked hardware stores?

 

[C.Lundin]

Oh... It's rocket science... I've seen these at different playgrounds. I thought it's some standard plywood for outdoor use, but wasn't really sure what. I assume these can be found in well-stocked hardware stores?

Yes, they can. But I would guess, without knowing exactly which type, that these are over 200 SEK/m2. Perhaps even more for private individuals.

 

[anhack]

I had some cut pieces of formply (covered with phenolic film) in the cold garage and I have never seen any wood mold as quickly and as much as this ply did on the exposed edges. So I certainly wouldn't choose this for long-term outdoor use (but it obviously suffices well for what it's intended for).

 

[vincentt]

mplyfa (coated with phenol film) in the cold garage and I have never seen any wood mold as quickly and as much as this plywood did on the exposed edges. So I would not have chosen this for long-term outdoor use

Sigh... oh well... I was thinking of building an outdoor kitchen and a panel with worn-out knobs, buttons, and PLC parts for the kids... Is there something else one could use? Plywood equivalent... OSB?

 

[JeLö]

Why couldn't it be agricultural plywood? I know we bought the same as just agricultural plywood, but that was 20 years ago now.