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Internet #205671519

Model #483503

Store SKU #1001358552

33 fl. oz. Fence Post Mix

  • Sets in just three minutes with no tools required
  • Effectively replaces two 50 lb. bags of concrete mix
  • Can be used with wood, steel and PVC posts
  • See More Details

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Product Overview

Sika PostFix 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



Info & Guides

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Specifications

Dimensions

Container Size
33 oz.
Product Depth (in.)
0.5
Product Height (in.)
8.5
Product Length (in.)
10

Details

Returnable
90-Day
Use Location
Floor

Warranty / Certifications

Manufacturer Warranty
One year from date of installation.

Questions & Answers

333Questions27Answers

Can i use the fence post mix to set vinyl fence posts

Asked by Richard March 31, 2021
1
Answer

yes

I'm thinking of using this on some 15 year old 6x6 deck posts that are buried 1-2 feet deep in di...

Asked by Eliot March 29, 2021
3
Answers

THEY DON'T NEED TO BE DRY . MAKE SURE YOU HAVE THEM LEVELED BECAUSE THIS SETS UP FAST .

Can this be used to fill a small hollow space between a fiberglass pool shell to concrete

Asked by Jr March 26, 2021
4
Answers

It can but be careful, there's no way to make any less than the entire bag at once. It'll expand to fill in the space and keep expanding until it fizzles out, same as those cans of expanding spray foam. If your space is smaller than the amount of space 1 full bag will fill, you'll have to wait for it to dry then saw or break off the excess.

I only need to use it on a flower pot tree, so I do not need to utilize the entire bag...how do i...

Asked by bumm6776 March 1, 2021
3
Answers

yes put in trash bag or box but have it ready it starts expanding fast

Is this Open or Closed cell foam? Will it shrink after it has set and cured; I ask because some ...

Asked by RayT February 21, 2021
3
Answers

doesn't shrink

I use 2 bags of cement per post. How many bags of foam would I need per post

Asked by kevin February 19, 2021
3
Answers

if you are using two 60 lb bags per post i probably wouldn't use this your post must be heavy

Home Depot, has two model types listed, Model# 483503, and Model# 7116170. What is the difference...

Asked by TAlene January 14, 2021
0
Answers

Can it be used in lawn light post?

Asked by Happy December 17, 2020
3
Answers

yes

Should I put some gravel in the hole first?

Asked by Todd December 2, 2020
4
Answers

no need

Can this be poured over a water line, and then buried, to insulate it from freezing?

Asked by Eagleseye7 November 15, 2020
3
Answers

I think I understand. You could do that but you'll find it will be hard to control the shape and spread. There are better ways to insulate - the best being top bury the line deep, below frost line which probably isn't very practical. even pipe wrap won't provide much protection outside at shallow depth

33 fl. oz. Fence Post Mix - page 2

Customer Reviews

  • 4.1
    out of 1,112 reviews
  • 72% recommend this product
Filter by:
Showing 1-10 of 1,112 reviews
I used it for a basic railing for low exterior stairs, the side with no roots it soared.
I used it for a basic railing for low exterior stairs, the side with no roots it soared.
by Blackberri
Response from Sika Retail RepApr 6, 2021
Thank you for being a Sika customer. SikaRetail
1 person found this helpful
Amazing Product
Needed to put up a new mailbox post and was looking for the best way to do it. Glad I chose to try the Sika PostFix. I dug the hole and taped 2 levels to the post so I could ensure it stayed upright. I mixed the solution as the package said and poured it in. It ended up expanding well above the level of the hole so I waited a few minutes and it was hard enough to cut. I used a small handsaw to easily cut the material down to the ground level, it is like cutting a dense Styrofoam. I put some dirt on top and the post is straight and solid. Clean up was super easy, throw the bag away and the chunks of excess foam. As a bonus if I ever need to replace the post it will be a lot easier to remove the foam then it would be to break up concrete.
by Barry
Response from Sika Retail RepMar 11, 2021
Thank you for being a Sika customer. SikaRetail
quick and easy setup of lightweight sign posts and mailboxes. make sure you have saw to cut extra...
quick and easy setup of lightweight sign posts and mailboxes. make sure you have saw to cut extra if it comes out of hole
by hossl
Garbage
Easy to apply. Doesn't hold posts well. Pain to get back out, not as advertised.
by Shayne
1 person found this helpful
Not secure enough
When I dug the recommended hole for how much it said it would fill, it did not reach the top when it was done expanding and as it expanded it got further away from the pole making it barely hold it in place. Had to go buy concrete to fill in completely.
by Renee
1 person found this helpful
YES you CAN cast silicone mold with this!
Straight to the point..... If you are the one prop maker looking at this stuff and wondering; "can I cast a mold with this stuff?" YES YOU CAN! I've been running a large half pumpkin mold, silicone with a fiberglass shell, all week and this foam is nice. It is a 1:1 mix ratio. 20 second mix time, it changes from cloudy to clear. Foams approximately 10x it's volume. Fully expands in ~3 minutes. Finished skin is smooth and captured details nicely. Has a cure consistency of rigid floral foam, with similar skin texture. Nice hard cell structure. For reference, one 33oz bag filled this pumpkin mold (28"w x 18" h x 7" d) with VERY little overflow. A little back pressure on the mold will help immensely. Demolded easily from silicone mold. Cheers prop makers!
by REVELATION13FX
9 people found this helpful
The packages were very easy to use and set our post in minutes, way easier and faster than cement.
The packages were very easy to use and set our post in minutes, way easier and faster than cement.
by David
1 person found this helpful
It’s so much faster, cleaner and easier!!! Very little to cleanup afterwards too. I love this stu...
It’s so much faster, cleaner and easier!!! Very little to cleanup afterwards too. I love this stuff!!!
by IIIvan
1 person found this helpful
DO NOT BUY
Very easy to work with initially. After a few hours it's very sturdy and seems ready to start working on the fence. But leaving it for a few days the foam will shrink and the post will be very loose. Then you get to pull up the post, cut off the foam, go back to the store, buy the concrete mix and start the process all over. Do not waste your money or time. This is not a time saver.
by NeverUseFoam
11 people found this helpful
I mostly love it
I mostly love this product and have been using it to install a vinyl fence. For one of the posts, it rose the post out of the ground about 4”! So that will be something to watch for with lighter materials such as vinyl fence posts. Just keep your hands on it while it sets. I think my husband walked off too early.
by Christina
5 people found this helpful
Showing 1-10 of 1,112 reviews