Plaster wall?

[Hampus Gran]

Hi! I was thinking of installing a TV mount on the wall between the living room and bedroom, and I wanted to find out if it was double plasterboard to buy molly plugs. I drilled an 8mm hole and went about 70mm in, but when I shine light inside, there is no insulation and the plasterboard doesn't end when I drill. Where I drilled, a bit of paper came off just like it does from plasterboard, but I don't understand what kind of wall it is and how it can be so thick.

Thanks in advance!

 

[BirgitS]

Are you sure it's plaster all the way and that you haven't drilled into a stud?
How old is the house?

 

[Hampus Gran]

Are you sure it's plaster all the way and not that you've drilled into a stud? How old is the house?

I drilled quite a large hole and shone a flashlight in, and the plaster goes much more than 26mm in. Tried to use a bent paperclip to find the end of the board but couldn't. It’s an apartment from 1984. I'm very confused. I don't think I hit any stud as I didn't get any wood when drilling, and it's still just plaster.


Regards, Hampus

 

[tergo]

maybe siporexvägg

 

[MathiasS]

Siporex or lightweight concrete. It is not more than 26mm of gypsum, if any at all, so that can be ruled out.

A plug for lightweight concrete will probably be excellent. Plug for 10mm hole and drill 10, then 6mm screw.

 

[Krish8926]

I drilled quite large and shone in with a flashlight and the plaster goes much more than 26mm in. Tried using a bent paperclip to find the end of the sheet but it didn't work. It's an apartment from 1984. Very confused. Don't think I've hit any stud either since no wood came out when I drilled and it's still just plaster.

Best regards, Hampus

Hi Hampus,

I'm trying to mount my TV on an interior wall and have exactly the same situation. Drilled 70mm but couldn't find the end of the sheet. Were you able to solve the problem or understand what it was?

 

[Hampus Gran]

Hi Hampus,

I'm trying to mount my TV on an interior wall and have exactly the same situation. Drilled 70mm but couldn't find the end of the board. Were you able to solve the problem or understand where it was?

Hey there! For me, it turned out I have lightweight concrete walls/siporex. I used 8mm plugs I think. People often assume everything is drywall indoors...

 

[Krish8926]

Hey! It turned out that I have lightweight concrete walls/siporex. I think I used 8mm plugs. People usually think everything is drywall indoors..

Thanks for replying! It was really easy to drill then, just like drywall. Do you remember if you felt the same?

 

[Hampus Gran]

Thank you for responding! That was really easy to drill then, same as drywall. Do you remember if you felt the same?

Yes, it was very easy to drill with the screwdriver and felt like a drywall when you knocked on it. If you've drilled 70mm in without it becoming empty or going through, you can go with normal plugs without any problem.
No worries, good luck

 

[Krish8926]

Yes, it was very easy to drill with the screwdriver and it felt like a plaster wall when I tapped on it. If you've drilled 70mm in without hitting an empty space or going through, you can use a regular plug without any problem.
No worries, good luck

Thank you very much, I'll try that then!

 

[MathiasS]

Thank you so much, I'll try with that then!

If you have gypsum, the drill dust will be more "rocky" whereas gypsum becomes like flour.

 

[Krish8926]

If you have plaster, the drill dust becomes more "rocky" while plaster becomes like flour.

It looks like this. Rocky, I think?

 

[MathiasS]

if it's hard grains it's siporex, if it's flour it's plaster.

 

[Hampus Gran]

If it's hard grains, it's siporex; if it's powder, it's gypsum.

He probably doesn't have 5 layers of gypsum.

 

[Krish8926]

It was aerated concrete. Used aerated concrete screws without plugs and now I'm done