Wall plug for EXTREMELY porous wall?

[traktor05]

I was going to put up a curtain rod at a relative's place yesterday and it went completely wrong. I drilled with an 8 mm drill bit as far as it would go without encountering any solid material. As far as I know, it should be a brick wall, but there was no red dust at all. Now the question is, what on earth should I use to attach the brackets for the curtain rod? The plug I put in yesterday just spins and I’m considering some kind of expandable plug. Press in PL400?

Any suggestions?

 

[jon_h]

There are large plugs with sturdy wings specifically for lightweight concrete and porous walls.

 

[traktor05]

Thank you for the answer! I will check the local hardware store for these.

 

[andersmc]

Drill a large hole and plug it with Husfix. Once it has set, insert a regular plug, or press it in immediately while the fix is soft.

 

[traktor05]

Thank you for the answers and suggestions. Apparently, it's some kind of construction method they used in this house in the 40s. The area office suggested extremely long screws with a good plug on the "top". These have been purchased but not installed yet.

 

[Alko]

These plugs with double expansion function from Clas Ohlson are really good once you've got a hole in relatively solid ground:

Clas Ohlson - Plugg. Pluggar handla beställa postorder

(Alko

 

[Martin_Blomberg]

I had similar problems in an apartment from the 1940s. Solved it like this:
If an 8mm drill was recommended for the plug, I used a 7.5mm drill. Then I forced the plug in with violence. Since the hole was smaller than recommended for the plug, the plug could stay in place and expand due to the friction from the smaller hole that the plug was forced into.

 

[ByggaNytt]

http://www.byggahus.se/forum/45723-post7.html

 

[Mats]

I have used regular metal expansion anchors in situations like this. Drilled the hole so that I got it a little conical with the opening as the smallest part and then inserted an expander and expanded it. Then it stays in place.

 

[Mikael_Swe]

Hijacking this thread by showing a picture of my wall, which is also porous. The wall on the right in the picture was plastered and painted today. But as you can see, it consists of a hardboard panel with a lot of loose red stone behind it.



The previous residents drilled a plank and then a curtain rod onto it. My question is whether I need to do the same or if a metal expander can do the job? (Curtains are changed and sometimes they are somewhat heavier...)

 

[SBH]

looks like it might be some sort of mineral board and not masonite.