18 Best Liquid Urethane Foam of 2022 – Romance University

After hours researching and comparing all models on the market, Romance University finds out Top 18 Best Liquid Urethane Foam of 2022. Check our ranking below.

2,949 Reviews Scanned

Rank No. #1

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)

Flotation Foam is a polyurethane 2-part foam that, when mixed in equal parts and poured in place this foam will soundproof, insulate, or provide extra buoyancy.
4LB. Density polyurethane flotation Foam Quart Kit; Consists of 1 pint of Part A and 1 pint of Part B and produces 1/2 cubic foot.
Once fully cured this foam can be laminated over with any type of polyester, epoxy or vinyl ester resin without melting.
The 4LB density also works well in floating decoy or taxidermy applications as well as many other sculpting, casting, carving and other filling applications
All expansion rates and times given are temperature critical. Temperatures below 75° F will lower the expansion rate therefore requiring more foam. Ideal working temperature is 75° to 80° F or above. Accurate measuring of these products is extremely critical. Working time before foaming: approx. 45 seconds Time before full expansion: approx. 5 minutes

Rank No. #2

TRUE COMPOSITES Liquid Urethane Pour Foam Base-2 Part Closed Cell Rigid Pour Foam-4 lb Density-Fast-Acting Formula-Boat Buoyancy, Flotation, Filling, Soundproofing & Insulation-1/2 Gallon Kit

✅ High-Strength & Durable: This two part liquid pour foam component system produces foam when mixing part A and B together. It does not contain any CFC blowing agent and has a closed-cell structure that allows it to resist water absorption for many years. Once cured, the urethane flotation foam remains stable against solvents, oil, gasoline, fresh or saltwater, or solvents and features 95%-98% closedcell structure with a 4-lb density!
✅ Easy to Mix & Apply: Pour Foam series systems offer ease of mixing by hand or machine and produce a uniform product with exceptional cell structure. Just mix at a 1:1 ratio to ensure equal, even distribution and the strongest possible foam. This fast acting formula permits approximately twenty seconds for mixing and pouring, as foam will be set in place within 10 minutes. It's ready for use in just hours.
✅ Excellent Insulation & Soundproofing: The high density foam can protect the pipes on a boat in colder temperatures and block sounds, ideal to fill dock floats or boat parts for soundproofing and insulating!
✅ Various Applications: Great for casting, carving, sculpture, plug making, sign making, flotation for boats and buoys, floating decoys, part fabrication, replicating wooden parts, rigidifying, structural support and more.
✅ Versatile & Adaptable: 2-Part Liquid Pour Foam Component System can be poured in multiple layers with superb bonding between layers. Once fully cured, foam can be coated with polyester, epoxy, or vinylester resins, without melting. Shaping is simple once cured.

Rank No. #3

4 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boat and Dock Flotation, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit)

Flotation Foam is a polyurethane 2-part foam that, when mixed in equal parts and poured in place this foam will soundproof, insulate, or provide extra buoyancy.
4LB. Density polyurethane flotation Foam 1 Gallon Kit; Consists of 1/2 gallon of Part A and 1/2 gallon of Part B and produces 2 cubic feet.
Once fully cured this foam can be laminated over with any type of polyester, epoxy or vinyl ester resin without melting.
The 4LB density also works well in floating decoy or taxidermy applications as well as many other sculpting, casting, carving and other filling applications
All expansion rates and times given are temperature critical. Temperatures below 75° F will lower the expansion rate therefore requiring more foam. Ideal working temperature is 75° to 80° F or above. Accurate measuring of these products is extremely critical. Working time before foaming: approx. 45 seconds Time before full expansion: approx. 5 minutes

Rank No. #4

Lifeboat Urethane Pour Foam - 2lb Density - 1 Gallon Kit 2-Part Closed Cell Rigid Pour Foam - Fast-Acting Formula - Great for Boat Buoyancy, Flotation, Filling, Soundproofing, & Insulation

✅ LIQUID EXPANDING FOAM to RIGID INSULATION - The ideal foam for marine flotation foam applications, our liquid urethane foam is also great for soundproofing and insulating. Use it to fill dock floats, gaps and cavities in boats and a multitude of other applications.
✅ 1-Gallon Kit = 1/2 gallon Part A & 1/2 gallon Part B for a total volume of 1 gallon. This kit has the capacity to expand to a substantial volume of 4 cubic feet. Initially, it exhibits a liquid-like consistency, progressively transitioning into a rapid expansion phase (mix extremely well and fully, scraping the sides of the container and doing so rapidly). It is advised to mix and apply the kit in smaller, measured quantities.To ensure precise control over the expansion process and achieve a more uniform and controlled fill within confined spaces.
✅ EASY TO USE - Great even for novice boat owners! This pourable liquid urethane foam is very easy to work with and expands rapidly. Mix Parts A & B at a 1:1 ratio for best results.
✅ IMPRESSIVE STRENGTH - Urethane is both lightweight and extremely reliable. After curing into its rigid form, our insulating foam boasts a 95 to 98% closed cell structure with a 2lb density
✅ QUICK SETTING - Our expanding foam has a short curing time and minimal shrinkage, leaving your boat ready for use just hours after application. The foam hardens in place within 10 minutes

Rank No. #5

6 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boats, Dock Flotation, Carving, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit)

Flotation Foam is a polyurethane 2-part foam that, when mixed in equal parts and poured in place this foam will soundproof, insulate, or provide extra buoyancy.
6LB. Density polyurethane flotation Foam 1 Gallon Kit; Consists of 1/2 gallon of Part A and 1/2 gallon of Part B and produces 1.5 cubic feet.
Once fully cured this foam can be laminated over with any type of polyester, epoxy or vinyl ester resin without melting.
The 6LB density also works well in floating decoy or taxidermy applications as well as many other sculpting, casting, carving and other filling applications
All expansion rates and times given are temperature critical. Temperatures below 75° F will lower the expansion rate therefore requiring more foam. Ideal working temperature is 75° to 80° F or above. Accurate measuring of these products is extremely critical. Working time before foaming: approx. 45 seconds Time before full expansion: approx. 5 minutes

Rank No. #6

TRUE COMPOSITES Liquid Urethane Pour Foam Base-2 Part Closed Cell Rigid Pour Foam-4 lb Density-Fast-Acting Formula-Boat Buoyancy, Flotation, Filling, Soundproofing & Insulation-2 Gallon Kit

✅ Liquid Foam Insulation: Ideal for soundproofing and insulating dock floats or boat parts.
✅ Impressive Strength: Delivers superior strength and durability with a high-density, 95%-98% closed-cell foam structure with a 4-lb density!
✅ Easy to Use – Great even for novice boat owners! Mix at a 1:1 resin-to-hardener ratio for best results. Multiple pours will adhere to each other. It can be sanded and resin can be applied once the foam has fully cured.
✅ Quick Setting: Our expanding foam cures in 10 minutes with minimal shrinkage and supports multiple layers.
✅ Long-Lasting: Resists gasoline, oil, saltwater, and solvents for reliable performance. Can be sculpted or coated with polyester, vinyl ester or epoxy resins once cured.

Rank No. #7

Lifeboat Urethane Pour Foam - 2lb Density - 2 Gallon Kit 2-Part Closed Cell Rigid Pour Foam - Fast-Acting Formula - Great for Boat Buoyancy, Flotation, Filling, Soundproofing, & Insulation

✅ LIQUID EXPANDING FOAM to RIGID INSULATION - The ideal foam for marine flotation foam applications, our liquid urethane foam is also great for soundproofing and insulating. Use it to fill dock floats, gaps and cavities in boats and a multitude of other applications.
✅ IMPRESSIVE STRENGTH - Urethane is both lightweight and extremely reliable. After fully curing to its rigid form, our insulating foam boasts a 95 to 98% closed cell structure with a 2lb density. See images for expansion chart.
✅ EASY TO USE - Great for all boaters, novice to expert boat owners! This pourable liquid urethane foam is very easy to work with and expands rapidly. Mix Parts A & B at a 1:1 ratio for best results.
✅ QUICK SETTING - Our expanding foam has a short curing time and minimal shrinkage, leaving your boat ready for use just hours after application. The foam hardens in place within 10 minutes
✅ LONG LASTING RESULTS - Once cured, urethane is unaffected by gasoline, oil, fresh or saltwater, or solvents, making it one of the most dependable and enduring materials for boating needs

Rank No. #8

TRUE COMPOSITES Liquid Urethane Pour Foam Base-2 Part Closed Cell Rigid Pour Foam-2 lb Density-Fast-Acting Formula-Boat Buoyancy, Flotation, Filling, Soundproofing & Insulation-1/2 Gallon Kit

Fast-Acting Liquid Urethane Foam: Fast-acting formula provides quick buoyancy, flotation, filling, soundproofing and insulation.
High Density Foam: 2 lb density foam provides excellent insulation and buoyancy for boats and other watercraft.
Waterproof and Durable: The urethane foam is waterproof and durable for long-lasting use in wet environments.
Easy to Apply: The liquid foam can be easily applied to any surface for quick and easy buoyancy and insulation.
Complete Kit: The 1/2 gallon kit includes enough foam to cover a small to medium-sized boat or other watercraft.

Rank No. #9

Fiberglass Supply Depot 6LB Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boats, Dock Flotation, Carving, Soundproofing, Filling Voids, and Insulation (Quart Kit)

Flotation Foam is a polyurethane 2-part foam that, when mixed in equal parts and poured in place this foam will soundproof, insulate, or provide extra buoyancy.
6LB. Density polyurethane flotation Foam 1 Quart Kit; Consists of 1 Pint of Part A and 1 Pint of Part B and produces 0.375 cubic feet.
Once fully cured this foam can be laminated over with any type of polyester, epoxy or vinyl ester resin without melting.
The 6LB density also works well in floating decoy or taxidermy applications as well as many other sculpting, casting, carving and other filling applications
All expansion rates and times given are temperature critical. Temperatures below 75° F will lower the expansion rate therefore requiring more foam. Ideal working temperature is 75° to 80° F or above. Accurate measuring of these products is extremely critical. Working time before foaming: approx. 45 seconds Time before full expansion: approx. 5 minutes

Rank No. #10

Lifeboat Urethane Pour Foam - 2lb Density - 4 Gallon Kit 2-Part Closed Cell Rigid Pour Foam - Fast-Acting Formula - Great for Boat Buoyancy, Flotation, Filling, Soundproofing, & Insulation

✅ LIQUID EXPANDING FOAM to RIGID INSULATION - The ideal foam for marine flotation foam applications, our liquid urethane foam is also great for soundproofing and insulating. Use it to fill dock floats, gaps and cavities in boats and a multitude of other applications.
✅ IMPRESSIVE STRENGTH - Urethane is both lightweight and extremely reliable. After curing into its rigid form, our insulating foam boasts a 95 to 98% closed cell structure with a 2lb density
✅ EASY TO USE - Great even for novice boat owners! This pourable liquid urethane foam is very easy to work with and expands rapidly. Mix Parts A & B at a 1:1 ratio for best results.
✅ QUICK SETTING - Our expanding foam has a short curing time and minimal shrinkage, leaving your boat ready for use just hours after application. The foam hardens in place within 10 minutes
✅ LONG LASTING RESULTS - Once cured, urethane is unaffected by gasoline, oil, fresh or saltwater, or solvents, making it one of the most dependable and enduring materials for boating needs

Rank No. #11

TRUE COMPOSITES Liquid Urethane Pour Foam Base-2 Part Closed Cell Rigid Pour Foam-2 lb Density-Fast-Acting Formula-Boat Buoyancy, Flotation, Filling, Soundproofing & Insulation-2 Gallon Kit

Fast-Acting Liquid Urethane Foam: Fast-acting formula provides quick buoyancy, flotation, filling, soundproofing and insulation.
High Density Foam: 2 lb density foam provides excellent insulation and buoyancy for boats and other watercraft.
Waterproof and Non-Toxic: The liquid urethane foam is waterproof and non-toxic for safe use in and around water.
Easy to Apply: The liquid foam can be easily applied to existing structures or surfaces for quick results.
Complete Kit: The 2 gallon kit includes all the necessary materials for a complete project.

Rank No. #12

TotalBoat 6 Lb Density Expanding Foam Kit, 2 Part Closed Cell Polyurethane Liquid Foam for Boat Flotation, Casting, Carving, Sculpture, Reinforcement and Void Filling (2 Quart Kit)

TWO-PART, MARINE GRADE EXPANDING FOAM cures very hard and rigid, with high compressive strength ideal for a number of marine and residential applications, including structural reinforcement, architectural castings, art projects and flotation
6 POUNDS PER CUBIC FOOT HIGH-DENSITY FORMULA is perfect for casting, carving, sculpture, plug making, sign making, flotation for boats and buoys, floating decoys, part fabrication, replicating wooden parts, rigidifying, structural support and more
FAST-SETTING, CURES TO A 94% CLOSED CELL FOAM, where each cell traps air and prevents liquids such as water, gas, and oil from penetrating; once fully cured, foam is compatible with epoxy, polyester or vinyl ester resins, and can be painted
IDEAL WORKING TEMPERATURE IS 75-85°F. Proper temperature, mixing, timing and venting are critical for proper foam expansion; below 75°F expansion decreases; the foam expands rapidly after mixing, so prep the surface in advance and be ready to pour
AVAILABLE IN A 2 QUART KIT AND A 2 GALLON KIT. Yield: 2-Quart Kit – 3/4 cubic ft, 2-Gallon Kit – 3 cubic ft; Flotation Range for 6lb foam: 23 lbs per mixed 2 quart kit and 92 lbs per mixed 2 gallon kit

SaleRank No. #13

Smooth-On FlexFoam-iT!™ III Flexible Urethane Foam, Casting Foam for Props, Gaskets, & More - Pint Unit

Premium Flexible Foam - High-grade water-blown liquid expanding foams for special effects, industrial, & arts & crafts projects.
Versatile Application - Ideal pourable foam for making props, industrial gaskets, custom foam padding, etc.
Mix Ratio of 1:2 By Volume - 2 Part Foam Kit - Cure Time of 2 hours - Cures to a solid, flexible foam.
FlexFoam-iT! III expanding foam mix has the lowest density & expands the most in the FlexFoam-iT! Series.
Perform a small-scale test of your project materials to determine suitability and compatibility. Refer to the technical bulletin for more information - available on our website.

Rank No. #14

TRUE COMPOSITES Liquid Urethane Pour Foam Base-2 Part Closed Cell Rigid Pour Foam-2 lb Density-Fast-Acting Formula-Boat Buoyancy, Flotation, Filling, Soundproofing & Insulation-6 Gallon Kit

✅ Liquid Foam Insulation: Ideal for soundproofing and insulating dock floats or boat parts.
✅ Impressive Strength: Supplies superior strength and exceptional durability with a high-density, 95%-98% closed-cell foam structure with a 2-lb density!
✅ Easy to Use – Great even for novice boat owners! Mix at a 1:1 resin-to-hardener ratio for best results. Various pours will adhere to each other. It can be sanded and resin can be applied once the foam has fully cured.
✅ Quick Setting: Our expanding foam cures in 10 minutes with minimal shrinkage and supports multiple layers.
✅ Long-Lasting: Resists gasoline, oil, saltwater, and solvents for durable performance. Can be molded or coated with polyester, vinyl ester or epoxy resins once cured.

Rank No. #15

2 Lb Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boat and Dock Flotation, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit)

Flotation Foam is a polyurethane 2-part foam that, when mixed in equal parts and poured in place this foam will soundproof, insulate, or provide extra buoyancy.
This expandable foam is recommended for void filling in nonstructural applications. It can be poured underneath decks and inside cavities where a lightweight flotation foam is needed to provide buoyancy.
2# Density polyurethane flotation Foam 1 Gallon Kit; Consists of 1/2 gallon of Part A and 1/2 gallon of Part B and produces 5 cubic feet.
Once fully cured this foam can be laminated over with any type of polyester, epoxy or vinyl ester resin without melting.
All expansion rates and times given are temperature critical. Temperatures below 75° F will lower the expansion rate therefore requiring more foam. Ideal working temperature is 75° to 80° F or above. Accurate measuring of these products is extremely critical. Working time before foaming: approx. 45 seconds Time before full expansion: approx. 5 minutes

Rank No. #16

True Composites 2 Part Urethane Pour Foam, 2 Lb Density, Marine Foam for Boat Flotation, Sound Proofing, Foam Insulation, Post Hole Foam, 1 Gallon Kit

Fast-Acting Liquid Urethane Foam: Our fast-acting formula offers quick buoyancy, flotation, filling, soundproofing, and insulation.
High-Density Foam: Ensures reliable insulation and buoyancy with a 2 lb density foam, ideal for boats and other watercraft.
Waterproof & Non-Toxic: Our urethane foam is waterproof and durable for extended in wet environments.
Easy Application: Our liquid foam is effortless to use on any surface for quick and easy buoyancy and insulation. Can be coated with epoxy, polyester and vinyl ester resin once cured.
Complete Kit: The 1 gallon kit includes Part A & Part B, the necessary materials for a complete project.

Rank No. #17

True Composites Liquid Urethane Pour Foam- 4 Lb Density Expanding Insulation Closed Cell Liquid Foam for Boat and Dock Flotation, Soundproofing & Insulation- 2 Part Rigid Pour Foam- 4 Gallon Kit

✅ Remarkable Strength– This two liquid pour foam component system that produces foam when mixing part A and B together does not contain any CFC blowing agent, and has a closed-cell structure that allows it to resist water absorption for many years. Once cured, the urethane flotation foam remains stable against solvents, oil, gasoline, fresh or salt water, or solvents and benefits 95%-98% closed cell structure with a 4-lb density!
✅ Simple to Mix and Use – Pour Foam series systems ease mixing by hand or machine and produce a uniform product with exceptional cell structure. Just mix at a 1:1 ratio to ensure equal, even distribution and the strongest possible foam. This fast acting formula gives approximately twenty seconds for mixing and pouring, as foam will be set in place within 10 minutes. Cured and ready for use in just hours.
✅ Perfect Expanding Foam to add Insulation – The high density foam protect the pipes on a boat in colder temperatures and block sounds, ideal to fill dock floats or boat parts for soundproofing and insulating!
✅ Multifunctional - Great for casting, carving, sculpture, plug making, sign making, flotation for boats and buoys, floating decoys, part fabrication, replicating wooden parts, rigidifying, structural support and more.
✅ 2-Part Liquid Pour Foam Component System - This product can be poured in multiple layers with exceptional bonding between layers. Once fully cured, foam can be coated with polyester, epoxy, or vinyl ester resins, without melting. Shaping is simple once cured.

Rank No. #18

TRUE COMPOSITES Liquid Urethane Pour Foam Base-2 Part Closed Cell Rigid Pour Foam-4 lb Density-Fast-Acting Formula-Boat Buoyancy, Flotation, Filling, Soundproofing & Insulation-1 Gallon Kit Total

✅ High-Strength & Durable: This two liquid pour foam component system that produces foam when mixing part A and B together does not contain any CFC blowing agent. It has a closed-cell structure that allows it to resist water absorption for many years. Once cured, the urethane flotation foam remains stable against solvents, oil, gasoline, fresh or salt water and features 95%-98% closed cell structure with a 4-lb density!
✅ Easy to Mix & Apply: True Composite Pour Foam offers ease of mixing by hand or machine (recommended) and produces a uniform product with exceptional cell structure. Just mix at a 1:1 ratio to ensure equal, even distribution and the strongest possible foam. This fast acting formula permits approximately twenty seconds for mixing and pouring, as foam will be set in place within 10 minutes. It's ready for use in just hours.
✅ Excellent Insulation & Soundproofing: The high density foam can protect the pipes on a boat in colder temperatures and block sounds, ideal to fill dock floats or boat parts for soundproofing and insulating!
✅ Various Applications: Great for casting, carving, sculpture, plug making, sign making, flotation for boats and buoys, floating decoys, part fabrication, replicating wooden parts, rigidifying, structural support and more.
✅ Versatile & Adaptable: 2-Part Liquid Pour Foam Component System can be poured in multiple layers with superb bonding between layers. Once fully cured, foam can be coated with polyester, epoxy, or vinyl ester resins, without melting. Shaping is simple once cured.

How Do You Buy The Best Liquid Urethane Foam?

Do you get stressed out thinking about shopping for a great Liquid Urethane Foam? Do doubts keep creeping into your mind? We understand, because we’ve already gone through the whole process of researching Liquid Urethane Foam, which is why we have assembled a comprehensive list of the greatest Liquid Urethane Foam available in the current market. We’ve also come up with a list of questions that you probably have yourself.

Romance University has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for Liquid Urethane Foam that you consider buying. Your questions might include the following:

Is it worth buying an Liquid Urethane Foam?
What benefits are there with buying an Liquid Urethane Foam?
What factors deserve consideration when shopping for an effective Liquid Urethane Foam?
Why is it crucial to invest in any Liquid Urethane Foam, much less the best one?
Which Liquid Urethane Foam are good in the current market?
Where can you find information like this about Liquid Urethane Foam?

We’re convinced that you likely have far more questions than just these regarding Liquid Urethane Foam, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for Liquid Urethane Foam, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible Liquid Urethane Foam. Make sure that you are only using trustworthy and credible websites and sources.

Romance University provides an Liquid Urethane Foam buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available Liquid Urethane Foam currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

Brand Value: Every brand of Liquid Urethane Foam has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
Features: What bells and whistles matter for an Liquid Urethane Foam?
Specifications: How powerful they are can be measured.
Product Value: This simply is how much bang for the buck you get from your Liquid Urethane Foam.
Customer Ratings: Number ratings grade Liquid Urethane Foam objectively.
Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their Liquid Urethane Foam.
Product Quality: You don’t always get what you pay for with an Liquid Urethane Foam, sometimes less, and sometimes more.
Product Reliability: How sturdy and durable an Liquid Urethane Foam is should be an indication of how long it will work out for you.

Romance University always remembers that maintaining Liquid Urethane Foam information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding Liquid Urethane Foam is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly! We’re here for you all the time. Contact us here. Or You can read more about us to see our vision.

18 Best Liquid Urethane Foam of 2022 – Romance University

How Do You Buy The Best Liquid Urethane Foam?

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