Table of Contents
Overview
The Lifeboat two-part closed-cell polyurethane expanding foam uses a 2 lb density formula in a 1-gallon kit. Also, it supports boat buoyancy, cavity filling, insulation, deep pours, and basic sound attenuation.
The material is designed to form a rigid acoustic barrier after curing. It supports noise reduction by helping dampen airborne noise and structural vibrations inside enclosed compartments. However, its stated role remains a base level of absorption and isolation within layered soundproofing methods.
Key takeaways
- The kit contains equal parts A and B for mixing and pouring.
- The mixed liquid expands to fill up to four cubic feet of volume.
- A 95% to 98% closed-cell rate supports insulation and noise reduction.
- The rigid structure helps dampen airborne noise and structural vibrations.
- The extended reaction window allows up to 20 seconds for mixing and pouring.
- The cured foam can be cut, carved, or sanded for surrounding material.
What the product is designed to do
This closed-cell polyurethane expanding foam supports flotation, void filling, thermal insulation, and basic sound attenuation. Also, it expands from a mixed liquid into a lightweight, rigid fill during curing.
For sound control, the material works as a functional insulator and acoustic barrier. Its closed-cell structure helps dampen airborne noise and structural vibrations within hull cavities or enclosed compartments.
The foam also supports integration with layered soundproofing methods. For example, it can provide a base level of absorption and isolation inside inboard engine enclosures or underdeck areas.
Its acoustic role centers on cavity filling and moderate acoustic isolation. However, the approved uses focus on marine compartments, enclosed spaces, insulation, and sound-sensitive areas.
Materials, dimensions, and technical details
| Detail | Specification |
|---|---|
| Material | Two-part closed-cell polyurethane expanding foam |
| Density | 2 lb formulation |
| Kit size | 1 gallon with equal parts A and B |
| Expansion volume | Up to four cubic feet per kit |
| Closed-cell rate | 95% to 98% after full curing |
| Mixing and pouring window | Up to 20 seconds |
| Application temperature | 75°F or above |
| Finished form | Rigid structure that can be cut, carved, or sanded |
The high closed-cell content supports thermal insulation, water resistance, and noise reduction properties. In addition, the rigid structure resists water infiltration after curing.
The cured material supports contact with fresh or saltwater. It also resists gasoline, oil, UV exposure, and common marine contaminants.
Installation and placement notes
The extended reaction formula gives users up to 20 seconds for proper mixing and pouring. Also, this reaction window supports larger or deeper pours where faster foam may set prematurely.
The recommended method uses smaller, controlled batches. As a result, users can support even distribution while reducing waste, overexpansion, and void formation.
Application conditions affect curing time and foam structure. The ideal ambient temperature for use is 75°F or above.
Surfaces should remain clean before application. In addition, clean surfaces support adhesion and cell integrity during curing.
Once cured, the rigid fill can be shaped around surrounding material. The extended-time foam formula can then be cut, carved, or sanded as needed.
The cured foam also works with polyester, epoxy, and vinyl ester resin coatings. This compatibility supports further finishing or protective layering without degrading the foam.
Performance characteristics described
The foam expands to fill up to four cubic feet of volume per kit. Also, this expansion supports buoyancy, gap filling, and void filling where low weight and rigid structure matter.
After full curing, the 95% to 98% closed-cell structure contributes to thermal insulation and noise reduction. It helps dampen airborne noise and structural vibrations inside hull cavities and enclosed compartments.
Airborne noise travels through the air before reaching an enclosure or surrounding structure. Structural vibration travels through connected material and can continue along the same assembly.
This foam supports both concerns through cavity filling, absorption, and isolation. However, the approved performance wording frames it as a base level within layered soundproofing methods.
The rigid cured structure also supports stable installation in marine environments. It resists water infiltration, UV exposure, gasoline, oil, and common marine contaminants.
For engine enclosures and underdeck areas, the rigid noise-reducing filler supports moderate acoustic isolation. Its density also supports basic sound attenuation within enclosed compartments.
Pros
- Expands up to four cubic feet for filling and buoyancy applications.
- Uses an extended reaction formula for more controlled application.
- Supports insulation and noise reduction through high closed-cell content.
- Cures into a rigid structure that can be shaped after application.
- Works with polyester, epoxy, and vinyl ester resin coatings.
Cons
- Requires an ambient temperature of 75°F or above for optimal curing.
- The 20-second mixing window still requires preparation and controlled work.
- Smaller batches help reduce overexpansion, uneven distribution, and voids.
FAQ
Does this foam support soundproofing?
Yes. The closed-cell structure supports noise reduction, basic sound attenuation, and moderate acoustic isolation inside enclosed compartments.
What types of noise does the foam address?
It helps dampen airborne noise and structural vibrations. Also, it supports absorption and isolation within layered soundproofing methods.
Where can the foam support noise control?
Its stated applications include hull cavities, enclosed compartments, inboard engine enclosures, and underdeck areas.
How much volume does one kit fill?
The equal parts A and B expand to fill up to four cubic feet. The two-part pourable foam kit uses a 2 lb density formulation.
How long is the mixing and pouring window?
The extended reaction formula allows up to 20 seconds for proper mixing and pouring. Smaller batches support controlled distribution.
Can the cured foam be finished or shaped?
Yes. Once cured, it can be cut, carved, or sanded. It also supports polyester, epoxy, and vinyl ester resin coatings.