Am i missing something or is this way more expensive than concrete? I know concrete can be a pain, but this stuff looks to be 4 or 5 times the price.

Yes, this is way to expensive. Home Depot and Lowes in Texas sells it for 9.88 a bag

Can I mix in a container other than the bag to use smaller amounts at a time?

This product appears to be a typical two-part expanding polyurethane foam. These are not particularly unusual products. They are usually not air-activated. You mix the two chemicals together in equal parts and then fairly quickly the reaction takes place and the liquid expands into a rigid foam. You could probably extract equal portions of the two chemicals from the two pouches, but really since you're here on Amazon just search for expanding polyurethane foam and you'll find the chemicals in various quantities where you won't have to deal breaking into the bag and then storing the ruptured bag(s).

Can this be used to set Deck Posts?

Its advertised to do so but I have not used mine...waiting on spring

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Sika Postfix - Fence Post Mix Light Green Expanding Foam 978 ml

Sika Postfix - Fence Post Mix Light Green Expanding Foam 978 ml

Product ID: 58061508

Details

Brand
SIKA
Item Weight
2.5 pounds
Item dimensions L x W x H
8.5 x 9.8 x 2
Material
Polyurethane
Style
Industrial

🌿Blends with natural surroundings

⏱️Sets in minutes

🌡️Works from -22°F to 130°F

€ 70.70

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In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Seal it fast, stand it strong, blend it smart!

WEATHERPROOF WARRIOR - Reliable performance from freezing cold to scorching heat.
SEAMLESS NATURAL BLEND - Light green foam that disappears into your yard’s landscape.
EFFORTLESS PREP NO MESS - Mixes right in the bag with a quick stir—no cleanup hassle.
RAPID SET RAPID SUCCESS - Get your posts secured in minutes, not hours.
UNIVERSAL POST PROTECTOR - Perfect for wood, steel, aluminum, and PVC posts alike.

The SIKA Sika Boom 180 Expanding Foam is a fast-setting, light green polyurethane foam designed to seal and support fence, mailbox, lamp, and signage posts. It mixes easily in the bag, sets within minutes, and withstands extreme temperatures from -22°F to 130°F. Compatible with multiple materials, it offers durable protection while blending naturally into outdoor environments.

Specifications

ASIN	B01N1Q5YNE
Best Sellers Rank	#294,384 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #38 in Decking Posts
Brand Name	SIKA
Color	Light Green
Compatible Material	Alloy Steel, Aluminum, Polyvinyl Chloride, Wood
Customer Reviews	4.4 4.4 out of 5 stars (467)
Global Trade Identification Number	00815202002611
Included Components	Sika - 483503
Item Dimensions	8.5 x 9.8 x 2 inches
Item Form	Foam
Item Highlight	Fence post mix - Light Green - Mix-in-the-bag expanding foam for supporting non-structural posts - 978 ml
Item Type Name	Sika - 483503
Item Weight	2.5 pounds
Manufacturer	Sika USA
Material Type	Polyurethane
Model	Sika - 483503
Number of Items	1
Number of Packs	1
Part Number	Sika - 483503
Style Name	Industrial
UPC	815202002611
Unit Count	1 Count
Warranty Description	Warranty

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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€ 70.70

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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