Hello!
I am going to mount an Elfa system (top track + 2012 mm hanging tracks) on a load-bearing wall of slag block/lightweight concrete in an apartment from 1929. The wall is solid (about 50 cm thick) but porous when drilled.
The system consists of a top track and 8 hanging tracks over a total width of approximately 3.8 m, with distances between the tracks of 575, 575, 475, 475, 718, 718, and 280 mm.
It will hold bookshelves, so the load will be relatively heavy.
I am considering two options for attaching the top track:
– Fischer DuoPower 8×65 (universal plug) or Fischer GB 10×60 (lightweight concrete plug)
– Chemical anchor with sleeve and threaded rod
Does anyone have experience with these options in similar walls? Tips are welcome. I know slag walls are a pain to fasten into, but since it's a load-bearing wall, it should work, I think....
Grateful for all responses!
I am going to mount an Elfa system (top track + 2012 mm hanging tracks) on a load-bearing wall of slag block/lightweight concrete in an apartment from 1929. The wall is solid (about 50 cm thick) but porous when drilled.
The system consists of a top track and 8 hanging tracks over a total width of approximately 3.8 m, with distances between the tracks of 575, 575, 475, 475, 718, 718, and 280 mm.
It will hold bookshelves, so the load will be relatively heavy.
I am considering two options for attaching the top track:
– Fischer DuoPower 8×65 (universal plug) or Fischer GB 10×60 (lightweight concrete plug)
– Chemical anchor with sleeve and threaded rod
Does anyone have experience with these options in similar walls? Tips are welcome. I know slag walls are a pain to fasten into, but since it's a load-bearing wall, it should work, I think....
Grateful for all responses!
If it is more porous than lightweight concrete, I have successfully used rubber expanders with a spacer tube outside so that the expansion occurs deep into the wall. I always over-dimension, so M6 feels good even though M5 might suffice, but then you may need to install them a bit closer together.
This spring, I mounted the same type of Elfa system but with only three hang rails on a carrying rail. I used Fischer SX 12x60 with screws 8x80, which work very well in lightweight concrete. I wouldn't do that with a slag wall.
I had some Fischer plugs that I bought many years ago at Hornbach. When I tried to replenish my supply of plugs this spring, Hornbach had stopped carrying Fischer. So I searched around a bit and got the impression that the pricing of Fischer had gotten out of hand. I generally avoid cheap copies for things that are important and need to last a long time, but there are other brands available.
This spring, I mounted the same type of Elfa system but with only three hang rails on a carrying rail. I used Fischer SX 12x60 with screws 8x80, which work very well in lightweight concrete. I wouldn't do that with a slag wall.
I had some Fischer plugs that I bought many years ago at Hornbach. When I tried to replenish my supply of plugs this spring, Hornbach had stopped carrying Fischer. So I searched around a bit and got the impression that the pricing of Fischer had gotten out of hand. I generally avoid cheap copies for things that are important and need to last a long time, but there are other brands available.
Thanks for the response TommyC!
I just spoke with the association, this particular wall is a so-called "hjärtvägg," meaning brick with a thick plaster layer.
I need to drill deep enough to reach the actual brick and get a proper hold.
Since the depth is a challenge, I am now leaning towards using Fischer facade plug 10×100 mm for the hanging rail, possibly with a little chemical mass for extra grip. Each drill hole will likely need to be assessed individually depending on how much good material is encountered.
I just spoke with the association, this particular wall is a so-called "hjärtvägg," meaning brick with a thick plaster layer.
I need to drill deep enough to reach the actual brick and get a proper hold.
Since the depth is a challenge, I am now leaning towards using Fischer facade plug 10×100 mm for the hanging rail, possibly with a little chemical mass for extra grip. Each drill hole will likely need to be assessed individually depending on how much good material is encountered.
Just to avoid misunderstandings. A hjärtvägg is a load-bearing wall that runs approximately along the middle of the house. It can be made of many different materials.Z ZoomZz said:
It's not easy to get a good hold in brick either, see here for various examples: https://gds.se/material/spik-och-skruv/skruvar-till-betong-tegel-och-lattbetong