Why angle the support beams against the fence pickets?

[jonasandero]

I'm going to set up a fence. No complications, foundations, posts, joists, and fence slats. I've bought beveled rails for drainage.

Question: all work descriptions show that the joist's drainage is TOWARDS the slats. Even fences I've looked at have this, but for me, this seems intuitively WRONG. Why not have the angle away from the slats so that the water can drain off without ending up between the joist and the slat?

Typical work description from hornbach: https://www.hornbach.se/projekt/bygga-staket/

 

[FredrikR]

Going to set up a fence. No surprises, foundations, posts, support beams, and fence slats. I've bought beveled beams for drainage.

Question: all work descriptions show that the support beam's drainage is TOWARD the slats. Even fences I've looked at have it like this, but for me, this seems intuitively WRONG. Why not have the angle away from the slats so that water can run off without getting between the support beam and the slat?

Typical work description from hornbach: [link]

I think every fence I've seen has had the drainage away from the slats, I had it that way on the last fence.

Would easily do it that way again unless someone has a good reason why you'd want the water against the slats and not the free side.

 

[Jonatan79]

But the images show that the angle makes the water flow just from…

 

[FredrikR]

But the pictures show that the angle makes the water run just from…

Check in the description, aren't the slats on the opposite side of the posts there? 🤔

 

[Jonatan79]

TS is right regardless of how the images are interpreted

 

[Violina]

Easier to replace slats than posts, maybe..?

 

[jonasandero]

I think all fences I have seen have had the drainage from the slats, did so myself on the previous fence.

Would easily do it again unless someone has a good reason why one would want the water towards the slats and not the free side.

Thinking the same

 

[jonasandero]

But the pictures show that the angle makes the water flow just from…

Wrong. The water will flow towards the fence boards.

 

[Jonatan79]

Wrong. The water will flow towards the fence slats.

Then I need glasses! I rest my case

 

[jonasandero]

But the pictures show that the angle makes the water flow just from…

Check in the description, aren't the slats on the opposite side of the posts there? 🤔

This feels completely crazy?

 

[Jonatan79]

This feels completely crazy?

Now I understand, that picture is crazy, that's not the preferred way to build.

 

[jonasandero]

Easier to replace planks than posts, maybe..?

Perhaps that's the idea, but a pressure post 70x70 withstands moisture much better than a 20x34 plank.

And the crazy thing is that all construction guides show the same thing.

 

[HogeN]

well probably intended for simple quick DIY people

But if you want that little extra for 2-4 years then the horizontal should be between the posts and angled inward so water runs off AND no foot hold for the little person... just how I see it

 

[FredrikR]

This feels completely crazy?

Agree, I would say reverse the slope.

 

[Violina]

Maybe that's the idea, but a pressure-treated post 70x70 tolerates moisture much better than a 20x34 rib.

And the crazy thing is that all construction descriptions show the same thing.

A 70*70 pressure-treated post that "gets extra water-splashed" will probably almost never be completely dry, a 20*34 rib will probably dry regardless..