would this provide floatation if used in the bow of a kayak?

Yes, that is one of its intended uses. It is a closed cell foam.

Question any way to pump this? I have a void under a concrete walkway and I need to get it back 4 feet The void is 4x4 and 2 to 6 inches deep.

You only have a brown 30 seconds after you mix the product to put it in the location that you are wanting depending on temperature if you have a mixing tip then you could pump it however it needs to be agitated for 20 seconds

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Fiberglass Supply Depot 4 Pounds. Density Expansion Foam, 2-Part PU Closed Cell Liquid Foam for Boat Flotation and Dock, Acoustic Insulation, Vaz Fill

Product ID: 766162487

Details

Brand
Fiberglass
Item form
Liquid
Material
Foam Resin
Special features
Heat Resistant
Specific uses for product
Flotation

🔇Closed-cell foam for superior soundproofing

⏱️45 sec working time, 5 min full expansion

🛥️4 lb/ft³ density for robust flotation

$206.08

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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Description

🛠️ Float, Fill, and Fortify with Foam That Means Business!

PREMIUM 4 LB DENSITY - Engineered to support light to moderate loads—perfect for boat decks and gas tank supports.
VERSATILE MULTI USE - Ideal for flotation, acoustic insulation, taxidermy, sculpting, and casting—one foam to rule them all.
RAPID EXPANSION FORMULA - Mix equal parts and watch it fully expand in just 5 minutes, optimizing your workflow.
RESIN COMPATIBLE FINISH - Seamlessly laminates with polyester, epoxy, or vinyl ester resins without melting or warping.
TEMPERATURE SMART APPLICATION - Best results between 75°-80°F; precise measurement ensures flawless expansion every time.

Fiberglass Supply Depot’s 4LB Density Expansion Foam is a high-performance, 2-part closed-cell polyurethane solution designed for superior flotation, soundproofing, and insulation. With a quick 45-second working time and full expansion in 5 minutes, it supports light to moderate loads and is compatible with multiple resin types, making it the go-to foam for boat flotation, acoustic panels, taxidermy, and sculpting applications.

Specifications

ASIN	B08T255GS5
Brand Name	Fiberglass Supply Depot
Color	Clear
Container Type	Can
Customer Reviews	4.4 4.4 out of 5 stars (140)
Item Form	Liquid
Item Package Quantity	1
Manufacturer	Fiberglass Supply Depot Inc.
Material Type	Foam, Resin
Number of Pieces	2
Other Special Features of the Product	Heat Resistant, Versatile
Part Number	poly4lbqk
Specific Uses For Product	Flotation, Decoy, Taxidermy, Sculpting, Casting, Carving, Filling
UPC	819794022897
Volume	1 Quarts

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

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.

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$206.08

Duties & taxes included

In stock

Sold byAmazon USADelivered 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 USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Smooth transaction and product arrived in perfect condition.

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