you titled the piece fence post foam vs concrete. however, it seemed like 75% of the text was a story about the entire project . . . and not the product. i clicked on your post to read about the product and after starting to read about the old fence post, neighbors, your dad, etc . ..
during the tests - which mimic the lateral force a fence post experiences due to wind - the fast 2k outperforms concrete. it has a little 'give' to it, where concrete does not. so when a high wind hits the fence, the fast 2k can absorb a bit of the force which helps prevent the fence post from breaking.
dear northernmama, we're the manufacturers of fast 2k fence post backfill. i'm so sorry to hear about your clothesline pole installation. fast 2k has been successfully used for the installation of fence and gate posts for quite some time by many fence contractors and home owners.
forum discussion: hey folks, has anyone here ever used fast 2k to install a fence post? it's this product here: say a 3lb bag is equal to 100lb bag of concrete. naturally i'm skeptical, but if the
fast 2k is an award winning innovation, much better and more convenient than concrete for setting fence posts, mail boxes, signs and much more fast 2k uses the same technology applied by chemque
anchor fence posts in only three minutes with the help of this sika fence post mix. suitable for all types of posts including wood, steel and pvc. sika 33 fl. oz. fence post mix- - the seven trust
fast 2k fence post backfill. 42 likes. fast 2k is an award winning innovation, much better and more convenient than concrete for setting fence posts,
fast 2k, 26 fluid oz, fence post back fill bag, expands to set posts in minutes, no wide holes required as with concrete, same technology used to set utility poles, no water or hardware required, waterproof, helps to protect the post, can be used during winter, ideal for fence and gate posts, mailboxes, signs, clotheslines, garden light posts, gooseneck stands, bollards, flag poles, sports posts
fast 2k fence post backfill - 26 fl. oz. bag. expands to set posts in minutes. no wide holes required as with concrete. same technology used to set utility poles. no water or hardware required. waterproof: helps to protect the post. can be used durin
if it's a privacy fence where it will catch a lot of wind, then you'll want to use concrete to glue the post in the ground. if your putting up line post for for a cattle fence, then it's just what mother nature offers, because the cost of transporting material to backfill a couple miles of fence would be astronomical.
there has been some awesome stuff posted on the forums about back-filling post holes with a combination of gravel and sand. this allows the posts to not have soil contact, and allows water to drain away, prolonging the life span of the posts. i am building a 36 foot x 20 foot structure with a gabled roof with 6 posts.
the post holes for pole barn have to be 4 ft deep and approved by building inspector. my question is, if you had a choice would you backfill with dirt, white rock or sand and gravel?
i have seen the diy shows on tv advocating the use of gravel to sink treated wood fence posts for years, yet the majority of contractors who do this work still use concrete.
re: fast 2k fence post backfill there's a few forums i looked at where people had used it. they said it feels just like the spray foam which i guessed and that it weights nothing and you can push your finger through it.