Model # 483503

Internet #205671519

Store SKU #1001358552

Sika 33 fl. oz. Fence Post Mix
0815202002611

Sika

33 fl. oz. Fence Post Mix

$10.97 /each

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Product Overview

Sika Fence Post Mix is a two component, pre-proportioned polyurethane resin. It is mixed in the bag to produce expanding foam for supporting and backfilling fence, mail box, gate and signage posts. Suitable for all types of posts including wood, steel and PVC.

  • Lightweight pouch replaces two 50 lb. bags of post mix
  • Fast setting
  • High strength
  • No water or special tools needed
  • Simple and fast application
  • VOC compliant in all 50 states

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Customer Questions & Answers

I am installing 4" X 4" X 4' posts for a Girl Scout project. There will be a small sign on each p...

I am installing 4" X 4" X 4' posts for a Girl Scout project. There will be a small sign on each post so the posts are not "load bearing." My holes will be 18" deep and as small around as I can make them with a shovel. Can I use one pouch for two posts?
Asked by: John
Yes..those posts, bearing small signs, won't go anywhere
Answered by: PotomacMD
Date published: 2016-12-24

If you are setting a fence post is it still recommended to place gravel at the bottom of the hole first?

Asked by: Kip
I used the Post Mix to set 13 steel fence posts. I did not use any gravel at the bottom. I do not see how it would help or hurt the final results.
Answered by: v308
Date published: 2017-02-10

This was suggested on a boating forum to be used for a "different" type of application. I have a ...

This was suggested on a boating forum to be used for a "different" type of application. I have a boat well cover that is fiberglass (rough on the bottom) that needs insulation. Could I use this to insulate it, taking the cover off and laying it bottom side up, then pouring the mixed product on it? I only need a couple of inches of insulation over about 6 square feet area.
Asked by: TomN
No..I would not. It's designed for fence post anchoring and it is too hard to control where and how much it expands. That said, you could experiment with laying down, saying a 1/4" thick coat of it and see how it expands vertically and horizontally. I think you would be better off looking for a spray on product of closed cell (non water absorbent) foam. One that holds water would be very very bad for a boat.
Answered by: PotomacMD
Date published: 2017-01-26

How many post holes will one bag fill?

Asked by: Peach
How big is the post hole? How big is the post going in to the hole? How deep is the hole? These all factor in how much is needed to fill the hole. My holes for my fence were about 7 inches in diameter and about 34 inches deep, I used a steel fence post that was (sort of) in the shape of a top hat; I used one bag per hole.
Answered by: v308
Date published: 2017-02-20
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Customer Reviews

33 fl. oz. Fence Post Mix is rated 3.4 out of 5 by 37.
Rated 2 out of 5 by from BEWARE - You need to brace both bottom and top of post when you use this product as it will push ... BEWARE - You need to brace both bottom and top of post when you use this product as it will push the bottom of the post out of plumb as it expands. It is easy to use, BUT, you must be careful to somehow afix the bottom of the post in place, not just set braces at the top. When this stuff expands, it is very powerful. So powerful that it will move the post around in the hole. As long as you take precautions to deal with that, it should be great.
Date published: 2016-11-18
Rated 5 out of 5 by from Excellant alternative to heavy bags of crete! I used this to secure garden totem poles I made by painting cedar 4x4s. Thought this expensive at first but when compared to the number of bags of crete needed it works out- and NO heavy lifting. I watched several You tube videos and would highly recommend anyone using this product to do that. Also, practice the steps- I did a couple dry runs placing scissors where needed and counting out the seconds and planning the order of each step. Glad I did cause the chemical reaction starts so quickly it could easily get away from you and erupt all over. Since I had rehearsed, no panic when it started foaming up. I also put plastic down on patio and landscape rocks which caught the few dribbles. So far, the poles are very stable. Foam sets up to a very hard solid.
Date published: 2016-10-04
Rated 5 out of 5 by from I like this stuff a lot. After back and neck surgery lifting 60# bags of concrete mix is not a good idea. After a tornado here destroyed most of my fence I am going back in with this. I have noticed over the years that concrete gets wet and holds water around the post. PT wood is just not what it used to be. This keeps moisture away from the wood and keeps the post solidly in place. It cost more, but, the long term benefits are well worth it.
Date published: 2017-02-02
Rated 5 out of 5 by from Acceded my expectations. I used this product to set a mailbox post, and it worked great. I probably could have used 3/4 of the mix, but the overflow was easy to cut with a hand saw after 10min. I removed my bracing after 3 hours and the post was solid. Great product. The cost is over traditional setting products , but savings are made back in time of use.
Date published: 2016-09-27
Rated 4 out of 5 by from Simple, easy, quick This product is excellent for the around the house type construction. I would still want concrete for any significant load bearing posts.
Date published: 2016-10-04
Rated 5 out of 5 by from Faster than concrete Easy to use and apply. Took less time for it to set up and ready to hook fencing up.
Date published: 2016-10-12
Rated 5 out of 5 by from ABSOLUTELY AMAZING! I am pretty much a novice at home improvement, and doubted that this product would work well, but in the end, I was 1000% satisfied with the ease of use and its performance. I used a sonotube (cardboard tube for posts) in addition to this product, and it worked GREAT! I wish the original fence installers would have used this product, as digging out the ball of concrete that weighed in excess of 400lbs was a NIGHTMARE! Don't think twice; buy this product, you won't regret it!
Date published: 2016-03-07
Rated 5 out of 5 by from Ranchers new best friend! The dairy farm runs 70 acres with three fences to ensure no cows walk off. After a storm, the outer fence was taken down by a large tree limb. Until I found this product, I would have had to carry all kinds of stuff, (water, concrete) through the wooded area. This worked without all of that Especially enjoyed the light weight package and that I did not need water.
Date published: 2016-06-19
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