Seem to work awesome! Saves a ton of time and even more effort; didn't have to carry a whole bunch of bags of concrete down, mix it, etc.
Very easy to work with, gets firm in a few minutes. Had six holes, each about 3-4' deep, 9" diameter, and with the 4x4 post I used 8 bags, 1 bag each and then 1 bag to top up 3 holes.
Only downside is cost, they're $17 each or something like that. Probably makes money if you're a professional since you can do more in less time, more expensive for a DYI though.
The guy I had dig the holes said he's heard of only one bad story; one guy doing a fence put down the cardboard tubes first but didn't backfill around the tubes very well, and of course the foam stuff doesn't weigh hardly anything, so the fence blew over in a wind, pulled the sonotubes and everything right out.
Anyway just wanted to share a product that was new to me that I really liked, saved a ton of time and effort.
__________________ Uncertainty is an uncomfortable position.
But certainty is an absurd one.
The Following 4 Users Say Thank You to photon For This Useful Post:
That seems especially useful for small numbers of posts, so you don't have to set up the wheelbarrow for mixing cement, and the one time cost of $17 isn't multiplied too frequently.
I have been blown away by how entrancing this product is to our customers, I'm hoping to see a version that is rated structurally (for decks) by next season.
Cost wise it is $1.65 more than 2 bags of fast set concrete. We are recommending one bag per post hole, and 2 bags on corner posts and gate posts.
The Following User Says Thank You to Bigtime For This Useful Post:
I have been blown away by how entrancing this product is to our customers, I'm hoping to see a version that is rated structurally (for decks) by next season.
Cost wise it is $1.65 more than 2 bags of fast set concrete. We are recommending one bag per post hole, and 2 bags on corner posts and gate posts.
So we shouldn't use the current product on decks? I have a small deck I want to build that would probably require three or four posts and this looks perfect. Not a good idea?
I have been blown away by how entrancing this product is to our customers, I'm hoping to see a version that is rated structurally (for decks) by next season.
Yeah our deck was so small and is ground level so I didn't think it would be an issue.
It's funny, I think I was more enthusiastic about trying this foam stuff than I am about a new gadget, and I really have no idea why.
I guess it's just fun to play with something totally new.
__________________ Uncertainty is an uncomfortable position.
But certainty is an absurd one.
I just did 17 post holes last month putting in my deck, a part of me hopes this can't be used for decks, just to be able to sleep peacefully. I just rented a portable cement mixer, would never do more than a few post holes without it.
How dense is once it's set up? It looks like something a friend used to patch a hole in his basement floor, although it expands way more. As long as the hole is filled, and the product is non-permeable I can't see any reason this wouldn't work, although the weight of concrete adds an anchoring factor which this product wouldn't have. I'd like to try and pull one of those posts to see how sturdy it is before I get all gung ho.
Just built my fence and used this stuff and would never use it again.dug 4 foot deep holes and poured this stuff and the next day after 24hrs i could still push my finger a few inches into it. it's basically like spray foam insulation. used it for half my posts then switched to concrete and poured concrete over the "other product" and the foam crap posts feel much less stable than the concrete ones. just too good to be true i'm afraid.
Cool product instead of concrete for posts
