wall concrete /hollow - correct fixing

2012paddy2012

I am trying to fit a number of brackets , heavy metal along this wall.


most areas I hit with drill ( as you can see in photos is hollow) i hit hollow
quickly.

I have tried frame fixers , again its putting plastic part into hollow wall and when screwing in fixer its doesn't tighten.

neither wall plugs are fitting securely either as wall is hollow.

Any ideas how to fit these brackets securely? Any link would be appreciated.

I am putting another hole in bracket to avoid the area where its pointed.

DublinDilbert

How much weight is going on them?

Brown rawl plugs and decent screws, or get some brick srews (you might need to re-drill the holes).

https://www.goodwins.ie/concrete-screws/c-1520.html

The brick screws are a great job, don't have to even be that long if fixing a flat item like that bracket.

okidoki987

I put up hanging baskets using these and they were perfect but there are loads of plugs that will do them properly.

https://www.screwfix.ie/p/rawlplug-rawl-4-all-wall-plugs-8mm-100-pack/48521

2012paddy2012

DublinDilbert wrote: »

How much weight is going on them?

Brown rawl plugs and decent screws, or get some brick srews (you might need to re-drill the holes).

https://www.goodwins.ie/concrete-screws/c-1520.html

The brick screws are a great job, don't have to even be that long if fixing a flat item like that bracket.

They are heavy duty L brackets. The Brown Rawlpugs label says 7x30mm
not sure what size drill bit to use. Tried one around same size as top of rawlplug head , the problem seems to be i am getting hollow very quickly , ill get those tomorrow in goodwins....try them , would you recommend any particular size brick screw , stronger/better , and suitable rawlpug/drill bit size.....that are compathible thks

Mr Mo

Hi Paddy,

Metal
Plastic

Looks like you are putting up a shelf. So I would look at the weights on the packets and work out what you need from there.
You can see in the picture in my links how they fan out to secure the screw in the hollow wall.

RebelButtMunch

Have a look at hollow wall anchors

https://www.screwfix.ie/p/rawlplug-hollow-wall-anchors-m6-x-52mm-20-pack/68410

2012paddy2012

RebelButtMunch wrote: »

Have a look at hollow wall anchors

https://www.screwfix.ie/p/rawlplug-hollow-wall-anchors-m6-x-52mm-20-pack/68410

yap my fault trying to force wrong type screw in !!!
thanks for that , its a number of brackets to hold length of 3x2 across,


Also be a bit of further weight on that also , the heavier/more secure the batter

thks

Idioteque

RebelButtMunch wrote: »

Have a look at hollow wall anchors

https://www.screwfix.ie/p/rawlplug-hollow-wall-anchors-m6-x-52mm-20-pack/68410

They are for plasterboard walls not block walls

Edit: OP you have some good suggestions above. I've a similar situation with hollow blocks and have a lot of fixing to do. Thunderbolt's or masonry screws will probably be fine but I'm considering buying some resin anchors, half because they are designed for this with a strong fixing and half because I want to play with something new

Calahonda52

express nails with self tappers in the hole, no plastic plugs

2012paddy2012

Calahonda52 wrote: »

express nails with self tappers in the hole, no plastic plugs

i had awful problems with them useless , for me , when your in hollow block they wont give a secure fit , but thanks

mickdw

There were 2 types of hollowblock used over the years.
One rype has a hole running end to end with another gap between the 2 legs of the block.
The other type had 2 vertical holes.
If you drill near top of a random block - less than an inch from top and about quarter way along block, whether you hit solid or hollow will tell the type of blocks used.
It should then be easy to say where the solid bits are.

SierraTango

I used these concrete screws recently for attaching batons to a block wall. Did the job perfectly. Very secure.
https://www.screwfix.ie/p/rawlplug-concrete-framing-screws-7-5-x-92mm-30-pack/8676f

2012paddy2012

SierraTango wrote: »

I used these concrete screws recently for attaching batons to a block wall. Did the job perfectly. Very secure.
https://www.screwfix.ie/p/rawlplug-concrete-framing-screws-7-5-x-92mm-30-pack/8676f

Just if anyone is looking at this post.
At the end of the day I used “ thunder bolts”
2 out of 3 went in securely. Important to have the correct size bit. For the one that didn’t secure in the block , used large blue real plugs and appropriate size screw! Job done. Thks for all advice