Attach heavy entrance roof wood facade

[JoelL]

I'm going to attach an entrance roof made of glass, weighing about 55kg. There are 4 brackets and for 3 of them, I find a stud to attach to. But at the top left, there isn't one, so it's only the wooden panel. What options are there for good stability? Tried with a 60mm universal plug but it didn't work, maybe 70mm would have worked but it's hard to find in stores.

Has anyone had a similar problem and knows something that holds well?

/Joel

 

[Robert-san01]

Why use plugs if it's wood paneling? Better to fasten the board properly to the battens it is nailed in with a proper screw and then a sufficiently thick screw in the paneling. Definitely no plugs in wood!

 

[Magnus E K]

Regarding the weight, one probably needs to calculate the force at the attachment point, and also account for snow load (consider drift towards the edge) and the dynamic force when a 7-kilo sea eagle suddenly lands.

 

[JoelL]

Regarding the weight, you probably have to calculate the force at the attachment point, and also consider the snow load (think about a drift at the edge) and the dynamic force when a 7-kilo sea eagle suddenly lands.

And how do I calculate that?

 

[JoelL]

Why use a plug if it's wooden paneling? Better to attach the board firmly to the battens with proper screws and then use a moderately thick screw in the panel. Definitely no plug in wood!

I simply thought that attaching to 22mm panel wouldn't be enough. I wanted the plug to expand in the hole and twist behind the panel so it would hold better. I've added extra screws to the battens so the panel will hold better. I understand it's not optimal, but it's for 1 of 4 attachments so I need to find a solution. Now it's drilled with a 10mm hole, so just screwing is difficult...

 

[Stefan N]

In the worst case, you take down some paneling and insert a stud where you want to attach, then put the paneling back.

 

[Thomas_Blekinge]

No plugs here, just big wood screws. What kind of screw holes do you have in the upper mounts?
With the slight angle between the glass panel and the brackets, you get quite a high pull-out force on the upper mounts.
If the glass weighs 55 kg, each attachment point is loaded with 14 kg without snow. If I'm calculating correctly, the pull-out force is 14/sin30°=28 kg. With an 8mm wood screw, there's no problem if the screw gets a good grip in, say, 50 mm of wood.
But if you only have 28 mm paneling and weak screws, I wouldn't have bought it.

 

[Robert-san01]

A sturdy Molly can probably handle 30kg straight out. The question is whether the panel can manage it without splitting.

 

[Robert-san01]

One like this I would try.

https://www.hornbach.se/shop/TOX-Sk...=8229630&url=8229631&trackArticleCrossType=vb

 

[JoelL]

A robust Molly can probably handle 30kg straight out. The question is whether the panel can manage it without splitting.

Also considered Molly, but it must be stainless. There are two screw holes on the fitting; if it doesn't crack the board, will it hold?

No plugs here, just heavy wood screws. What screw holes do you have in the upper mounts?
With the small angle that exists between the glass panel and the brackets, you get a fairly high tensile force on the upper mounts.
If the glass weighs 55 kg, each mounting point is loaded with 14 kg without snow. If I'm calculating correctly, the tensile force is 14/sin30°=28 kg. With an 8mm wood screw, it's not a problem if the screw gets a secure grip in, say, 50 mm of wood.
But if you only have a 28 mm panel and weak screws, I wouldn't have bought it.

There is a screw hole of 11mm. Okay, but now I don't have anything more than the facade to anchor to, so no 50mm wood...

 

[Vante]

Toggler plug