---
product_id: 334097086
title: "H.B. Fuller Fast 2K Fence Post Mix and Concrete Alternative and Replacement for Fence Post and Mail Post Installs. 32.8 oz Bag of Expanding Composite Footing Compound"
brand: "h.b. fuller"
price: "€ 9.22"
currency: EUR
in_stock: false
category: "H.B. Fuller"
url: https://www.desertcart.sk/products/334097086-h-b-fuller-fast-2k-fence-post-mix-and-concrete
store_origin: SK
region: Slovakia
---

# Ready to build in 15 minutes Waterproof & hydrophobic to prevent rot Lightweight 32.8 oz bag replaces 80-100 lbs concrete H.B. Fuller Fast 2K Fence Post Mix and Concrete Alternative and Replacement for Fence Post and Mail Post Installs. 32.8 oz Bag of Expanding Composite Footing Compound

**Brand:** h.b. fuller
**Price:** € 9.22
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Build Faster, Stronger & Smarter with Fast 2K!

## Quick Answers

- **What is this?** H.B. Fuller Fast 2K Fence Post Mix and Concrete Alternative and Replacement for Fence Post and Mail Post Installs. 32.8 oz Bag of Expanding Composite Footing Compound by h.b. fuller
- **How much does it cost?** € 9.22 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/334097086-h-b-fuller-fast-2k-fence-post-mix-and-concrete)

## Best For

- h.b. fuller enthusiasts

## Why This Product

- Trusted h.b. fuller brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pro-Grade Strength:** Uses the same expanding composite tech trusted by utility pros for rock-solid, long-lasting post stability.
- • **Hydrophobic Defense:** Waterproof formula protects posts from rot, rust, and deterioration—extend your fence’s lifespan effortlessly.
- • **Speedy Setup, Zero Wait:** Mixes in seconds and sets in 15 minutes so your project moves at your pace, not the other way around.
- • **Universal Compatibility:** Bonds seamlessly with wood, vinyl, and metal posts—one solution for all your fencing needs.
- • **Back-Saving Lightweight Power:** Ditch the heavy concrete—just 32.8 oz of patent-pending mix replaces up to 100 lbs of mess and strain.

## Overview

H.B. Fuller’s Fast 2K Fence Post Mix is a revolutionary 32.8 oz expanding composite footing compound that replaces traditional concrete for fence and mail post installations. Lightweight and mess-free, it sets in just 15 minutes, offers superior strength with professional-grade technology, and features a waterproof, hydrophobic formula that protects posts from water damage and decay. Compatible with wood, vinyl, and metal, it’s the smart, efficient choice for modern DIYers and pros alike.

## Description

H.B. Fuller Fast 2K Fence Post Mix and Concrete Alternative and Replacement for Fence Post and Mail Post Installs. 32.8 oz Bag of Expanding Composite Footing Compound : desertcart.ae: Tools & Home Improvement

## Features

- SAVE YOUR BACK: Quick, lightweight patent pending technology 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 a compact and lightweight 32.8 oz bag that mixes into a waterproof protection for your fence posts.
- 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 Fence Post Backfill 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 product is waterproof and hydrophobic which prevents water from getting into your posts, reducing rot, rust, deterioration and other water-related damage.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00LAFUC34 |
| Brand Name | H.B. Fuller |
| Color | No Color |
| Compatible Material | Metal, Vinyl, Wood |
| Container Type | Bag |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,672) |
| Global Trade Identification Number | 00669602000322 |
| Included Components | Multitool Accessory |
| Item Form | Foam |
| Item Package Quantity | 1 |
| Item Type Name | Fast 2K 26OZ Back Fill |
| Item Weight | 2.2 Pounds |
| Manufacturer | H.B. Fuller |
| Material Type | Adhesive, Sealant |
| Model | 250 |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Other Special Features of the Product | Waterproof |
| Part Number | 254-20-S |
| UPC | 713976908484 669602000322 |
| Unit Count | 1 Count |
| Volume | 32.8 Fluid Ounces |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** H.B. Fuller
- **Colour:** No Color
- **Item form:** Foam
- **Material:** Adhesive, Sealant
- **Special features:** Waterproof

## Images

![H.B. Fuller Fast 2K Fence Post Mix and Concrete Alternative and Replacement for Fence Post and Mail Post Installs. 32.8 oz Bag of Expanding Composite Footing Compound - Image 1](https://m.media-amazon.com/images/I/41S0b3GtQZL.jpg)
![H.B. Fuller Fast 2K Fence Post Mix and Concrete Alternative and Replacement for Fence Post and Mail Post Installs. 32.8 oz Bag of Expanding Composite Footing Compound - Image 2](https://m.media-amazon.com/images/I/51qn5Kyyc3L.jpg)
![H.B. Fuller Fast 2K Fence Post Mix and Concrete Alternative and Replacement for Fence Post and Mail Post Installs. 32.8 oz Bag of Expanding Composite Footing Compound - Image 3](https://m.media-amazon.com/images/I/51tDE7ge9WL.jpg)
![H.B. Fuller Fast 2K Fence Post Mix and Concrete Alternative and Replacement for Fence Post and Mail Post Installs. 32.8 oz Bag of Expanding Composite Footing Compound - Image 4](https://m.media-amazon.com/images/I/61-lupFQX5L.jpg)
![H.B. Fuller Fast 2K Fence Post Mix and Concrete Alternative and Replacement for Fence Post and Mail Post Installs. 32.8 oz Bag of Expanding Composite Footing Compound - Image 5](https://m.media-amazon.com/images/I/41yTeLWf5XL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: Could this be used to fill a plaster of Paris mold?**
A: Not that I'm aware of, it doesn't really say on the package but it does sit up very fast and is very durable. Sorry but that's the best I can answer your question.

**Q: Could this be used to hold an 8x8 supporting a substantial weight?**
A: I had to replace a 4x4 post for my mailbox and used this 2K Post Back Fill. I already had a deep hole in the cement, so this stuff fills up the gaps beautifully all around and keep the post solidly planted. I'm not sure about 8x8, weight is not the issue here but you would need a "solid" hole like in my case to hold to post, then this foam would then fill up any gaps. Good luck.

**Q: Can this be used to form the deck list foundation where the 8x8 post then sits on top held by a bracket anchored in the foundation?**
A: No, Fast 2K can only be used for installing posts that are sunk into the ground.  It cannot be used as a foundation material nor can any brackets be anchored into it.

**Q: Would this be good to use for posts for a horse fence strong and sturdy?**
A: Yes, also sets up quick and should be good for a horse fence.

## Frequently Bought Together

- Fast 2K Fence Post Mix and Concrete Alternative and Replacement for Fence Post and Mail Post Installs. 32.8 oz Bag of Expanding Composite Footing Compound
- Johnson Level & Tool 175-O Orange Post & Pipe Level, 4" x 5" x 9", Orange, 1 Level

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-11-14*