I'm trying to attach some wood structures to a block wall. They will have about 50 lbs. of weight. The blue plastic inserts pull out. The holes are 1/4". Any ideas? I want to avoid drilling larger holes but it's not out of the question.
Thanks : -)
Use Tapcons
You can use "Tapcons" in mortar joints or solid sections of blocks. They cut their own threads. -
I've had great results with these (without looking at the link, I tink we're talking about the same thing, I usually hear them called "lead anchors")...
*or* the dowel rod method that somebody mentioned in another reply. They kept them in place with epoxy, my method is to undersize the hole just a bit, grind or sand a small taper on one end of the dowel plug and then drive it into the hole with a hammer. In either method, it will stay in place and you drill the dowel with a pilot hole for a bigass bolt.
Go here:
Look at mechanical fasteners, tapper/ Zamac nailin/ strap toggle/ pop toggle
The very best would be epoxy anchors. Look at chemical anchors. To use in hollow block, you would need screen tubes and all thread.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Keep the whole world singing. . . . DanG
will have
1/4". Any ideas?
spring
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The Tapcons work. It takes two and I had to get an impact drill because the holes are so much better when I'm not pushing and struggling to make the hole. The toggle bolts wouldn't work because the top row of block is filled with concrete. The hollow wall anchors just pulled out too easily but would have been he easiest. I also tried 'liquid nails' which held for a while and actually worked on one wall but not the others. Go figure. It must have been the amount or that one wall had absorbed some moisture. Anyway, thanks to all for the help. I'm really glad to get this thing working finally. It's been an 18 month project starting with bent wire mesh and then I cut block and filled it with mortar to make a kind of pyramid, then fishing line, then whiteboard... : -)
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