Concrete fixings, screws vs raw plugs - HotUKDeals
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Concrete fixings, screws vs raw plugs

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I need to put a bicycle rack up in the garage. The garage is made of concrete slabs. Is it better to go with traditional raw plugs with screws or screw anchors like these: http://www.blackanddecker.co… Read More
rhinopaul Avatar
6d, 20h agoPosted 6 days, 20 hours ago
I need to put a bicycle rack up in the garage. The garage is made of concrete slabs. Is it better to go with traditional raw plugs with screws or screw anchors like these: http://www.blackanddecker.co.uk/en-gb/product-repository/products-blackanddeckereanz-gb/2016/07/10/19/20/m30018
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rhinopaul Avatar
6d, 20h agoPosted 6 days, 20 hours ago
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#1
I'd go with rawl (spelt with an L on the end) plugs personally as driving a screw direct into concrete has a higher risk of cracking than drilling then putting a screw into the rawl plug. That said, I'm sure either method would be fine.
#2
Scorpion
I'd go with rawl (spelt with an L on the end) plugs personally as driving a screw direct into concrete has a higher risk of cracking than drilling then putting a screw into the rawl plug. That said, I'm sure either method would be fine.
I think the screw anchor uses a pre drilled hole , I will probably end up using a rawl ( spelt wit an L) sorry for the omission, lol. but I wonder how good these screws really are.
#3
#4
Thunder Bolts would be my choice. Other brands are available
#5
krisward7955
Thunder Bolts would be my choice. Other brands are available

Clever name.
#6
Wasn't trying to be clever.
#7
rhinopaul

I need to put a bicycle rack up in the garage. The garage is made of concrete slabs. Is it better to go with traditional raw plugs with screws or screw anchors like these: http://www.blackanddecker.co.uk/en-gb/product-repository/products-blackanddeckereanz-gb/2016/07/10/19/20/m30018

Pre-fab concrete garage?

Are the panels thick enough for a rawl plug or hammer fixing as suggested above?

I opted for a simple long bolt, (or threaded rod) nut and large repair water inside and out, (does require assistance though to tighten the nut / hold the bolt), simply cut/grind the excess bolt off for a tidier finish.

Little dab of sealant behind the washer ensures no water ingress.





Edited By: andynicol on Apr 18, 2017 19:21
#8
andynicol
rhinopaul

I need to put a bicycle rack up in the garage. The garage is made of concrete slabs. Is it better to go with traditional raw plugs with screws or screw anchors like these: http://www.blackanddecker.co.uk/en-gb/product-repository/products-blackanddeckereanz-gb/2016/07/10/19/20/m30018
Pre-fab concrete garage?
Are the panels thick enough for a rawl plug or hammer fixing as suggested above?
I opted for a simple long bolt, (or threaded rod) nut and large repair water inside and out, (does require assistance though to tighten the nut / hold the bolt), simply cut/grind the excess bolt off for a tidier finish.
Little dab of sealant behind the washer ensures no water ingress.
Possibly prefab but its French for starters, lol. The slabs/panels are about 2.5" thick but they are also part of a block so I cant get to the other side. The strange thing or maybe not is that they sound hollow when you tap them but when I tried to drill through the other day using a hammer drill I really struggled and stopped to look for a better bit.
#9
You may find it near impossible to drill the block if the concrete is of the really hard type
#10
rhinopaul
andynicol
rhinopaul

I need to put a bicycle rack up in the garage. The garage is made of concrete slabs. Is it better to go with traditional raw plugs with screws or screw anchors like these: http://www.blackanddecker.co.uk/en-gb/product-repository/products-blackanddeckereanz-gb/2016/07/10/19/20/m30018
Pre-fab concrete garage?
Are the panels thick enough for a rawl plug or hammer fixing as suggested above?
I opted for a simple long bolt, (or threaded rod) nut and large repair water inside and out, (does require assistance though to tighten the nut / hold the bolt), simply cut/grind the excess bolt off for a tidier finish.
Little dab of sealant behind the washer ensures no water ingress.
Possibly prefab but its French for starters, lol. The slabs/panels are about 2.5" thick but they are also part of a block so I cant get to the other side. The strange thing or maybe not is that they sound hollow when you tap them but when I tried to drill through the other day using a hammer drill I really struggled and stopped to look for a better bit.
They may be hollow, but they will have reinforced strips throughout I should imagine, where the concrete is solid.

Rawl plugs will be fine strength wise, personally I would prefer these to the others you have, once you have the hole you know it will work, the screw anchors can have problems.
I would be more worried about the concrete slabs cracking when drilling. I wouldn't drill near to the edges and be a bit careful what kind of hammer drill you use, a softer type hammer would be what I'd choose if I had the choice. A percussion instead of a SDS for example.
#11
I would also vote for rawl plug as the plastic plug will give you a secure fixing.

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