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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Fiberglass Supply Depot 4 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boat and Dock Flotation, Soundproofing, Filling Voids, and Insulation (Quart Kit)

Fiberglass Supply Depot 4 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boat and Dock Flotation, Soundproofing, Filling Voids, and Insulation (Quart Kit)

Product ID: 273973810

Details

Brand
Fiberglass
Color
Black Clear
Item Form
Liquid
Material
Foam Resin
Special Feature
Versatility

🌊Closed-cell waterproof foam ideal for flotation

⏱️5 min full cure time for quick project turnaround

⚖️4 lb density for firm, durable foam

Bs.2361

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Description

🚀 Elevate your projects with foam that floats, fills, and fortifies!

RAPID 5 MINUTE CURE - Get projects done faster with quick foam hardening
SUPERIOR DURABILITY - 4 lb density foam resists compression and water absorption
VERSATILE APPLICATION - Perfect for boat flotation, soundproofing, insulation, and sculpting
COMPATIBLE WITH RESINS - Easily laminates with polyester, epoxy, or vinyl ester without damage
PRECISION MIXED 2 PART FORMULA - Ensures consistent, high-performance expansion every time

Fiberglass Supply Depot’s 4 lb density expanding pour foam is a two-part polyurethane closed-cell liquid foam designed for professional-grade flotation, soundproofing, insulation, and void filling. With a quick 5-minute cure time and compatibility with various resins, it offers durable, waterproof performance ideal for marine and industrial applications.

Specifications

ASIN	B08T255GS5
Best Sellers Rank	#40,973 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #82 in Urethane Adhesives
Brand	Fiberglass Supply Depot
Brand Name	Fiberglass Supply Depot
Color	Black, Clear, Yellow
Compatible Material	Vinyl
Container Type	Can
Customer Reviews	4.4 out of 5 stars 160 Reviews
Full Cure Time	5 minutes
Item Form	Liquid
Item Package Quantity	1
Manufacturer	Fiberglass Supply Depot Inc.
Material	Foam , Resin
Material Type	Foam,Resin
Number of Pieces	2
Other Special Features of the Product	Versatility
Part Number	poly4lbqk
Special Feature	Versatility
UPC	819794022897
Unit Count	64 Ounce
Viscosity Level	Medium to High
Volume	2 liters
Water Resistance Level	Waterproof

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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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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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TrustScore 4.5 | 7,300+ reviews

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Received my product in pristine condition. Great service overall.

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Bs.2361

Duties & taxes included

In stock

Sold byAmazon BoliviaDelivered 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 Bolivia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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