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H.B. Fuller

Fast 2K Deck Post Mix (10 Pack) | Expanding Foam Concrete Alternative for Deck Post, Fence Post, Mailbox, & Playground Equipment Installs. Fast-Setting, Post Foam

    • Based on 1,962 reviews
Condition: New
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$209.99 Why this price?

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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Feb 17
Order within 17 hours and 36 minutes
Available payment plans shown during checkout

Size: 10- 1L bags


Style: Deck Post Mix


Features

  • SAVE YOUR BACK: Each bag of Quick, lightweight Fast 2K Deck Mix replaces 80-100lbs of concrete with a lightweight bag that does not require messy mixing with water that requires cleanup & preparation for filling post holes
  • FAST & SECURE: Ready to build in 15 minutes, and mixes in seconds in place and in the bag. All that you need in 10 compact and lightweight 2.5lb bags that mix into a waterproof protection for your deck post, fence post, mailbox, and playground equipment
  • PRO TECHNOLOGY: It's the same technology used to set utility poles by the professionals. Now you can quickly and securely set your fence posts and mail posts with a minimum of fuss & mess securely.
  • EXPANDING COMPOSITE TECHNOLOGY: Fast 2K Deck uses an expanding composite technology which is stronger than traditional concrete. Designed to adhere to wood, Vinyl and metal posts.
  • HYDROPHOBIC TO PREVENT ROT: Unlike concrete which absorbs water which can damage metal and wood, the Fast 2K Deck product is waterproof and hydrophobic which prevents water from getting into your posts, reducing rot, rust, deterioration and other water-related damage.

Manufacturer: ‎H.B. Fuller


Item Weight: ‎27 pounds


Product Dimensions: ‎12 x 12 x 20 inches


Size: ‎10- 1L bags


Style: ‎Deck Post Mix


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: November 18, 2022


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Feb 17

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • This stuff is great
Size: 1 Pack Style: Fence Post Mix
Very easy to use and sets quickly. Rock solid, works well and fast.
Reviewed in the United States on January 22, 2025 by Steve McAndrews
    • Great!
Size: 1 Pack Style: Fence Post Mix
Don’t get nervous thinking you didn’t purchase enough as you are pouring it into the hole. It will foam up and if overflows or looks ugly, a simple aerated knife cuts the access away. Brilliant product, quick setting…a little pricey though.
Reviewed in the United States on January 14, 2025 by customer bob
    • Hmmmm
Size: 1 Pack Style: Fence Post Mix
Bought this cause hauling concrete is not an option at this time. I was installing a flag pole. Hole dug 36" deep post hole digger size. Flag pole 3" at base. Bought enough for two holes...just in case. Could have used double that..but we backfilled with dirt from the hole once set. Mixing super easy...no ballooning of bag. So volcanic explosions...waited for it to expand. Had a few minutes to position pole level. Easy to work with...other than having to wait for the temp to get below 80F. Buy extra. You may need it. ... show more
Reviewed in the United States on July 19, 2024 by FROGGIE
    • this stuff is amazing
Size: 1 Pack Style: Fence Post Mix
This stuff is amazing! I extremely recommend it. You will have no regrets about using it.
Reviewed in the United States on January 27, 2025 by J’oe Berrios
    • Fantastic
Size: 1 Pack Style: Fence Post Mix
This product would be perfect for somebody putting in multiple fence posts in a short amount of time. But I doubt that it would last 10 years versus concrete that cost five times less money. This product is very convenient, but very expensive but the total project cost in mind.
Reviewed in the United States on December 18, 2024 by Henry Rafacz
    • Was quite hopeful I found something good, took pictures and ended up giving up and buying regular old cement...
Size: 1 Pack Style: Fence Post Mix
UPDATE 1-10-15 Items were sent back (Amazon was superb, they provided a free shipping label to return the items and refunded the cost the day after the package was given to UPS). UPDATE 1-15-15 Amazon marked the items as 'received' and the credit still shows, major kudos to Amazon. Lousy is what this stuff was. I was excited and thought maybe their claim "Same advanced technology used to set utility poles for almost 15 years" might be a good indication but I can say categorically that claim is total non-sense. No way a utility company would ever use this, They might have TRIED it 15 years ago on one pole... So the details! (and I will upload pictures, I was VERY disappointed, so much so that I should have returned the empty containers to Amazon for a refund, but it is not Amazon's problem the products is lousy)... I had two posts I was putting up. These are to be posts to hold Just a hand railing, so they are not 'fence' posts, but a 6 foot fence post, holding a fence panel in the wind, (almost like a sail)? No way, this is an epic failure for that application. If you are 'effectively' OK with backfilling your post in with the equivalent of expanding spray foam, then this is your answer (not a good use, that is a pun)... So here is what I did exactly (pictures prove it!). I ordered 2 ($40) of the "Fast 2k Fence Post Backfill - 26 fl oz" packages from Amazon (after watching a video online and seeing someone use it). I read the instructions CAREFULLY (many times) and as you can see (from me wrapping my hand made posts in plastic wrap) I was concerned the blue foam might get on them and stick to them (I also put a bit of plastic wrap on walkway). The posts are regular 4x4 pressure treated that I have applied strips to, cut at an angle, and sanded and painted everything to end up with the posts you see. ONLY from ground level up is the entire design, below grade is regular 'fence post'... I also made a temporary bracket to hold adjustment to get the exact distance I wanted from both the stairs and edge of the walkway. I was thrilled at the idea of something 'encapsulating' the posts I had hand made (and therefore the posts lasting longer not dealing with groundwater rotting them out from below). Then wanting the posts in an exact spot I made up the temporary wooden alignment guide. Now comes the fun, after reading the instruction many times and being scared of the stuff, I CAREFULLY followed the directions. It was a 50+ degree day and I made sure the product was kept inside at the right temperature till I opened the bag. As you can see in my1st photo (that shows the post and the blue foam in the hole only) it did rise while it expanded but it never came up very far. I waited for over 30 minutes and it only 'rose' about 10" I then realized the hole might need a bit more so I prepped bag two and poured that on top (as directed). It too rose but not much (maybe 6 more inches) and you can see what that looked like in the photo that shows the step and foam and walkway edge. At this point I was out of foam and thought 'where will I get more, how much will it take" a guesstimate indicates this hole would have taken 4 bags and the other hole would have taken about 3 more. All said 7 bags at $20 a bag? How is $140 a good deal? NOW the 'epic failure' of this product. AFTER I carefully did not touch the post (It was very well supported) over and hour AFTER the second bag was poured and the surface of the foam was firm (not tacky) I tested the post. It moved a little bit and did not feel solid. I know the hole was not even half way filled so if it were totally filled with the Fast 2k stuff, maybe it would be OK. BUT if it were half filled with regular old cement that had cured there is no question the post would have been ROCK SOLID. I was bummed, I was not sure if I should 'chip' this foam 'junk' out (at this point I was very disappointed and the honeymoon was over) or what. I did not want to use cement then later find I should have removed the foam nonsense. I was NOT looking forward to trying to remove the post and then remove the foam and decided I would use REGULAR $4 a bag cement from the local home center. I went to the home center. bought 6 (50 pound) bags of quick crete and brought them home. I used a couple of bags and topped of the post that I had started using the 2k foam in, then on the other post I used only concrete. I ended up using about 5 bags total for a whopping $20. Had I used concrete from the start I would have used all 6 bags ($24). so $24 for a rock solid backfilled post or $140 for a post I would forever be worried about it getting 'wobbly'? I will NEVER use or recommend the use of this terrible product. I considered calling them and asking for help, but what can they do, it is a lousy solution for this application. I guess if it were a low fence post (that was in the middle of a run) and NOT under a lot of duress (say a short picket fence) MAYBE it might be OK, but a solid stockade fence, a corner post, an end post, or a gate post? absolutely a terrible idea! Don't get me wrong, Expanding foam is a great product and has MANY great uses but this is NOT a good application for it at all. ... show more
Reviewed in the United States on January 5, 2015 by E. Howland
    • Just didn’t expand as well as I’d hope.
Size: 1 Pack Style: Fence Post Mix
Overall the hold was pretty great but the product didn’t expand as much as I expected. I ended up filling quikrete on top of it. Time will tell if that was a mistake but I would get more and hope to use less if you’re tight on time.
Reviewed in the United States on October 30, 2024 by D CMK
    • Surprisingly strong
Size: 1 Pack Style: Fence Post Mix
Very easy to use. Very strong hold. I was surprised. Would purchase again. I used this for a post box post on the end of my property. It's held up better than the concrete that was originally there.
Reviewed in the United States on January 26, 2025 by Tulv

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