View Full Version : Rawl bolts into breeze block ??


jono300
18 April 2007, 21:59
Anyone recommend whats bolts I will require to fit a bracket to my plasterboard wall, the rear off the plasterboard has a gap and then breze block, obviously being a heavy, expensive piece off equipmet want to make sure it stays on the wall so just looking for tips on whats best to use and how best to do it ??

p.s will I require anything t fill the actual space between the plasterboard and the actual breeze block ??

cheers

John@TunerUK
19 April 2007, 13:50
Huge rawl bolts are all very well and good, your TV deffo won't fall off, but you have to be careful, as what you're sandwiching inbetween the bracket and the wall is plasterboard.

That's your limiting factor.

What size/weight is the TV?

jono300
19 April 2007, 22:54
Okay thanks mate, the tv is a 42" plasma, weight ??!!
yep had thought about the plasterboard problem that you mention and not sure if to just remove the actual plasterboard and replace it with a bit off ply and then fix the wall bracket via this and then on into the actual wall ??

have been advised that threaded rod fixed in place with resin would also be a good very secure fixing for this type off block ???

can resin be injected with the use off say a standard silicon type applicator gun ??

would you personally go for the rawl bolt or studs fixed in with resin or would I gain much by having rwal bolts fixed in be there usual expanding method and resin as well ??

may seem a bit OTT ??!! but given the fact that its a type off breeze block as opposed to a more stronger concrete material am obviously wanting to make sure fixings once installed dont want to move / come loose.

any ideas yourself regards the possible problems with tightning the bolts up against the actual plasterboard like you mention ??

appreciatte your advice mate, thanks so much again.

john

stara
19 April 2007, 23:02
get some directfix bolts that screw into concrete block without plugs, 140mm should do you, don't worry too much about crushing the plasterboard as the bracket should be in the form of a steel plate, just don't go mental tightening them up. Multi Monti Hex Head 10 x 140mm Drill Size 8 - Screwfix Direct, Everything for the Trade, Next Day! (http://www.screwfix.com/app/sfd/cat/pro.jsp?cId=101217&ts=19989&id=79480)

just make sure you use the exact sized drill bit.

jono300
19 April 2007, 23:44
Thanks also for your info mate, sorry are you saying these bolts that you linked to would require this resin in with them to ?? ie they would just be an alternative to the threaded rod idea ??

stara
19 April 2007, 23:56
no, you just drill the hole, and they cut a thread into the block. an alternative solution to resin and rods.

jono300
21 April 2007, 21:13
Anyone know if its possible to buy a resin that can be applied by iother means than one off the resin guns ?? dont have one, dont know anyone who does and not dont really want to pay £20 for something that will be used for a couple off minutes to put around six bits off threaded rod into a wall and then put in the cupboard to be nevver used again !!!

any alternatives to the normal tube / applicator style off use ??

ghplumb
22 April 2007, 00:34
You could try expanding foam
Drill 7 or 8 mm hole
Hoover the hole out
fill the hole with foam put the brown rawl plug in knock or push right in
refill hole with the foam
Put in long screw 100 - 120 x 6 leave to set remove then refix bracket
Fill in between block and plaster board with foam to stop the bracket pulling the board in
Dont get the foam on your hands as its a **** to get off

nufc1892
22 April 2007, 02:18
You could try expanding foam
Drill 7 or 8 mm hole
Hoover the hole out
fill the hole with foam put the brown rawl plug in knock or push right in
refill hole with the foam
Put in long screw 100 - 120 x 6 leave to set remove then refix bracket
Fill in between block and plaster board with foam to stop the bracket pulling the board in
Dont get the foam on your hands as its a **** to get off

Dont be Silly,thats a cowboy way.

What do you know.:cuckoo:

stevebt
26 April 2007, 17:43
if you have a plasterboard fixed onto breeze block i would try fill and the gap between the plasterboard and the wall to make it more solid before fixing a plasma tv !! as i have know kitchen wall units to fall off due to the fixing's giving way so i wouldn't trust a plasma tv on there ;) why not mark a 1ft sqaure section on the wall where you intend to mount the plasma, then carefully cut that section of plasterboard out so the brickwork is exposed!! then buy a bag of drywall adhesive and fill that gap as much as you can (solid with the adhesive and then place your plasterboard back into position!1 after a couple of days this will of set really hard and should give a far better hold for when fixing thru into the breeze block walls

scotthldr
26 April 2007, 19:33
Without seeing the fixing positions it's pretty tricky to suggest anything. All the suggestions so far are a bit over the top. Depending on the location of the TV at 42" it should cover 2 joists, which will be 600mm apart, screw a baton between the joists top and bottom then screw the tv fixings to the batons and mount the tv. The weight of the tv will force the batons against the joists thus preventing the whole thing falling down.

ghplumb
26 April 2007, 22:26
Joists :confused: :confused: :confused:
Are you taking these round for him ?
Over the top :wonder:

jono300
26 April 2007, 23:21
Thanks so much for all yuour kind advice guys really do appreciatte all your help.

have decided to have a go at the following method.

TV Bracket Installation (http://www.roweash.plus.com/tvmount/index.html)

have the plasma, now have the bracket and a quick trip to screwfix tomorrow and I should have the resin and studs, just need to waitt for my next day off now to get the plan put into action !!!!

will keep you up to date but again thanks again .

john

p.s forgott to say seems screwfix sell suitable resin that comes in a standard silicon gun applicator size so that get around that problem also !!!

scotthldr
27 April 2007, 18:55
Joists :confused: :confused: :confused:
Are you taking these round for him ?
Over the top :wonder:

What do you think the plasterboard is fixed to :confused: thin air

ghplumb
27 April 2007, 22:39
What do you think the plasterboard is fixed to :confused: thin air

No not thin air :rolleyes: :rolleyes:
Possibly the breeze blocks with dot & dab / adhesive :thumb:
Read the post before you drop the joist s off :hjtwofing

scotthldr
28 April 2007, 11:05
No not thin air :rolleyes: :rolleyes:
Possibly the breeze blocks with dot & dab / adhesive :thumb:
Read the post before you drop the joist s off :hjtwofingRead

Read the post yourself you arrogant tosser. He states that there is a gap between the plasterboard and the breeze block which would suggest that the wall is studded.

scotthldr
28 April 2007, 11:09
You could try expanding foam
Drill 7 or 8 mm hole
Hoover the hole out
fill the hole with foam put the brown rawl plug in knock or push right in
refill hole with the foam
Put in long screw 100 - 120 x 6 leave to set remove then refix bracket
Fill in between block and plaster board with foam to stop the bracket pulling the board in
Dont get the foam on your hands as its a **** to get off


And you have the cheek to slag me off:lol1: What planet are you on?????

ghplumb
28 April 2007, 21:45
And the problem is ??
At what point is it mentioned anywhere other than your post s that the wall is studded ???
If you had any idea what you are / were on about then try giving advice
but to assume something :nono:
Wasted enough time replying to you :hjtwofing

speye91
30 April 2007, 00:52
Read

Read the post yourself you arrogant tosser. He states that there is a gap between the plasterboard and the breeze block which would suggest that the wall is studded.


What a grade A prick.:cuckoo: :cuckoo: :cuckoo: :cuckoo: :cuckoo: :hjtwofing

scotthldr
30 April 2007, 17:53
You could try expanding foam
Drill 7 or 8 mm hole
Hoover the hole out
fill the hole with foam put the brown rawl plug in knock or push right in
refill hole with the foam
Put in long screw 100 - 120 x 6 leave to set remove then refix bracket
Fill in between block and plaster board with foam to stop the bracket pulling the board in
Dont get the foam on your hands as its a **** to get off

Why would you fill a drilled hole with expanding foam then insert a rawlplug, and how can you fill a hole with foam that is already filled with foam:hjtwofing

And whats your problem speye 91 only prick on here is you:hjtwofing

ghplumb
01 May 2007, 18:32
Why would you fill a drilled hole with expanding foam then insert a rawlplug, and how can you fill a hole with foam that is already filled with foam:hjtwofing

You really are that thick are nt you :eek: not just having us on :wonder:
Try reading my original post again slowly and think about it !
Rawlplugs dont always get a good fix if the block is a light weight type it will pull out the foam expands and holds the plug

What does knock or push the plug right in then refill with foam mean to you
I really hope your a window cleaner or something like that
:hjtwofing

speedking
08 May 2007, 13:49
In a similar situation (but only a measly 23" TV), I used rawlplugs for thick fixings (~120mm long IIRC). Cut a piece of central heating pipe the length to go from the face of the blockwork to the face of the plasterboard. This ensures that when tightening the plug doesn't pullout but expands in the blockwork. Also prevents crushing of the plasterboard.

Has stood up to all applied loadings so far, 2 x 6mm rawlbolts. Smaller hole in plasterboard means that fixing is invisble behind a narrow mount, and no redecoration required after installation.

Personally I would use nuts onto threaded bar, rather than screw type (as post #4), as it is much easier to fit and remove the bracket for decorating purposes.

HTH

Dalthegooner
12 May 2007, 14:53
If you are fixing into breeze block and not concrete blocks then the resin and stud is the best way to go.
Rawl plugs will pull out of breeze blocks and expanding foam will make absolutely no difference. Its the sort of thing that you would see on the telly about cowboy builders who aint got a clue :lol1:

ghplumb
12 May 2007, 22:11
It has worked ok for me
It is doing pretty much the same as the resin

Never seen it on telly either :hjtwofing


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