Help identify this timber

[old martParticipant @oldmart]

I am not sure if this wood in the rails of the fence is in need of treatment for rot or not. It is planed all round with the corners rounded off, and it looks to me like untreated timber used in interior house walls. There was another section with better definition, but it was upside down. So I took a picture of that with the camera upside down to compensate. When I looked at the picture on the rear screen, it was upside down.

The printing reads "dry graded EN14081 C24M KUREKSS/09 SGST WPPA PT CE 1224"

any timber experts on the forum?

[old martParticipant @oldmart]

[pgk pgkParticipant @pgkpgk17461]

…messing about on google tells me that's Latvian sustainable softwood conforming to C24 stuctural use. The PT implies pressure treated but I can't find a code of SGST which may or may not be the preservative…

pgk

[JasonBModerator @jasonb]

PT does indeed mean it has been pressure treated with preservative, SGST is the species.

[AdrianRParticipant @adrianr18614]

Im no expert, just looked into this when needing a post and rail fence built. The trouble is there are different grades of treatment, from suitable for dry indoors (UC1) to in ground contact (UC4).

If that is a fence then it should be UC3.2. I am a bit surprised that is C24, it is a better type of construction wood, bit of overkill for a fence. I would hazard a guess that it i only been treated for indoors (UC1 or UC2)

Adrian

[Bruno TaylorParticipant @brunotaylor21701]

In my opinion wood preservative above and below ground is cosmetic. The important bit is at ground level. That is where the rot will occur.

Also, most fences, unless extremely well built get blown down long before they rot.

[SteviegtrParticipant @steviegtr]

This time around I have dug out & concreted the concrete versions with slide in panels & barge boards. Dam hard work that was. As said above, sick of posts rotting out at ground level.

Steve.

[Author]

Posts