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Weatherables Fast 2k Fence Post Backfill

Weatherables Fast 2k Fence Post Backfill

Q: Could this be used to fill a plaster of Paris mold?

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?

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?

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?

Yes, also sets up quick and should be good for a horse fence.

Product ID: 75636303

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Details

Material
Adhesive
Brand
H.B. Fuller
Item dimensions L x W x H
38 x 216 x 191
Colour
No Color
Shape
Bag

⚡Sets posts in 15 mins

🪵Hydrophobic, prevents rot

🛠️No water or mixing needed

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

Description

⚡ Set it, forget it, and fence like a pro!

LIGHT AS A FEATHER - Replaces 80-100 lbs of concrete with a compact 32.8 oz bag—save your back and your energy.
PRO GRADE STRENGTH - Uses the same expanding composite tech trusted by utility pole pros for rock-solid stability.
LIGHTNING FAST SETUP - Ready to build in just 15 minutes—ditch the wait and get your project moving!
MESS FREE CONVENIENCE - No mixing, no water, no cleanup—just tear, pour, and set for a hassle-free install.
WATERPROOF ROT RESISTANT - Hydrophobic formula protects wood and metal posts from rust, rot, and water damage.

Weatherables Fast 2K Fence Post Backfill is a lightweight, patent-pending expanding foam that sets fence posts in 15 minutes without water or mixing. Using professional-grade composite technology, it offers superior strength and waterproof protection to prevent rot and rust, making it ideal for wood, vinyl, and metal posts. Compact and mess-free, it replaces heavy concrete with a simple, fast, and durable solution trusted by utility pole installers.

Specifications

Item form	Foam
Item weight	2.5 Pounds
UPC	713976908484 669602000322
Number of items	1
Manufacturer	H.B. Fuller
Part number	254-20-S
Item Weight	1.13 kg
Product Dimensions	3.81 x 21.59 x 19.05 cm; 1.13 kg
Item model number	254-20-S
Size	1 Pack
Style	Fence Post Mix
Finish	Metal
Item Package Quantity	1
Measurement System	Metric
Included components	Multitool Accessory
Batteries included?	No
Batteries Required?	No

Have a Question? See What Others Asked

Could this be used to fill a plaster of Paris mold?

Could this be used to hold an 8x8 supporting a substantial weight?

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?

Would this be good to use for posts for a horse fence strong and sturdy?

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