Are you looking for FROTH and wondering what is behind this mysterious acronym? In the construction market, it is synonymous with the original Froth-Pak insulation foam – a mobile spray system for quickly creating airtight thermal and acoustic insulation. In this article, we look exclusively at the original products offered in 180, 600 and 1900 litre packs. You will learn the difference between Quick Rise (fast expansion) and Slow Rise (slow expansion) versions, user reviews and how to work safely with two-component PUR foam.

What is Froth-Pak?

Froth-Pak is a system of two pressurised cylinders with an isocyanate and a polyol component, which mix in a spray gun to form a rigid polyurethane foam. The manufacturer emphasises that the new formulation based on HFO gases has a very low greenhouse effect potential. The kits are designed for quick insulation – you heat the cylinders, connect them to the gun and spray the foam without external compressors. The foam has a lambda coefficient of 0.022 W/(m-K), which is among the best results on the market. The R-value is approximately 0.45 m²-K/W for every cm of thickness. This is why even an essentially thin layer provides high thermal protection.

Composition of the Froth-Pak foam kit

Our every kit in the 2K-trade Froth-Pak shop contains two disposable (or in the 1,900 version – reusable). The important thing is that the tanks, hoses, spray gun and nozzle set for different applications. The white conical nozzles allow for standard spraying, the blue ones give a thin coat, the green ones fill scratches and cracks and the black ones are used for pouring foam into large cavities. The nozzles are mounted on the spray gun and ensure even mixing of the components. There are two formulations to choose from: Quick Rise (QR) – fast expansion, and Slow Rise (SR) – slow expansion. The QR version cures to the touch in as little as 30 seconds and reaches full strength after about 5 minutes. The SR version takes 60 seconds to reach shape and about 8 minutes to fully cure, allowing the foam to better fill closed spaces.

Key features and benefits

High insulation efficiency. This is because, thanks to its low lambda value and high R-value, Froth-Pak foam offers better insulation than traditional materials. As much as 95 % of the structure is closed cells, which provides resistance to moisture and reduces the formation of condensation.

Quick installation without equipment. You don’t need a compressor or electricity to work – you heat the cylinders, connect the hoses and spray the foam. The Quick Rise version cures in as little as 5 minutes, significantly reducing construction time.

Universal application. The foam adheres to most materials, including wood, concrete, steel, gypsum board and masonry, with the exception of some plastics such as PE film or PTFE. It is waterproof and can be used in cryogenic insulation.

Flexible formulation choice. Rapid expansion (QR) works well for surface insulation – walls, roofs or attics. Slow Expansion (SR) is for filling voids, such as in steel structures or in the OEM industry.

Eco-friendly formulation. The new formulation uses HFO gas instead of HFCs, reducing the impact on global warming. The foam does not contain formaldehyde or ozone-depleting substances.

Comparison of 180, 600 and 1900 packs

The table below summarises the key parameters of the three standard Froth-Pak kits. The data is taken from the original Fomicom manufacturer’s website.

Packaging	Type	Volume of expanded foam	Set volume	Area at 5 cm	Gross weight	Application
Froth-Pak 180	one-off	375-430 l	≈ 0,4 m³	≈ 8 m²	~17 kg	Small projects and repairs, insulation of windows and thermal bridges
Froth-Pak 600	one-off	1250-1430 l	≈ 1,3 m³	≈ 26 m²	~25 kg	Medium investments – roofs, attics, walls
Froth-Pak 1900	reusable	3900-4500 l	≈ 4,2 m³	≈ 84 m²	~95 kg	Large commercial projects, halls, cold stores; refillable

In the 180 and 600 packs, there is a choice of both formulations (QR or SR), while the 1900 kit usually comes as a multi-use system with fast or slow expansion. The manufacturer also offers a mini kit (25-35 l), but in this article we focus on the standard kits.

Quick Rise vs Slow Rise {#quick-vs-slow}

Quick Rise (QR) – the foam reaches its target volume in 30 seconds and is dry to the touch after 30 seconds; full cure occurs in about 5 minutes. Thanks to this rapid course, the application process is ideal on vertical and horizontal surfaces: walls, attics, ceilings. QR is mainly used in residential construction, where speed and the ability to apply several thin layers are important.

Slow Rise (SR) – the foam takes approximately 60 seconds to take shape and completely dries in 8 minutes. The longer reaction time allows the mass to flow freely in confined spaces, which is why SR is used in injection moulding for walls, suspended ceilings, industry and manufacturing (OEM). Pressure must be controlled during injection moulding to avoid deformation of the structure.

Parameter	Quick Rise	Slow Rise
Time to shape	~30 s	~60 s
Full curing	5 min	8 min
Applications	Surface insulation – roofs, walls, ceilings	Confined space filling, injection
Advantages	Fast working speed, multilayer application possible	Precise filling, less risk of voids
Disadvantages	Short working hours require experience	Longer setting time and possibility of overexpansion

Applications of Froth-Pak foam

• Insulating residential buildings: foam is ideal for insulating roofs, ceilings, attics, frame walls, floors and thermal bridges. It is nothing less than the tightly closed cellular structure that very effectively eliminates vapours and thermal bridges.
• Sealing joints and installation transitions: thanks to its injection nozzles, the foam fills gaps around pipes, HVAC ducts, ventilation ducts and cable transitions. It is also used in the sealing of window and door frames.
• Industry and OEM: SR kits are used for injection moulding into machine housings, boats, trailers, refrigerated containers and steel structures. The foam provides both insulation and stiffening of the components.
• Renovations and modernisations: Froth-Pak makes it possible to insulate attics, complete insulation in old houses and eliminate thermal bridges with little interference with the existing structure.

If you are looking for ready-made kits, visit our products: FROTH-PAK Foam 180 polyurethane foam insulation kit and FROTH-PAK Foam 600. Our shop also offers accessories such as gun and hose kits, nozzles or heating coats.

Step-by-step instructions

1. Preparation of cylinders and tools. Before working, make sure the cylinders have reached a temperature of 25-30 °C. In colder conditions, a heating shell can be used to keep the cylinders at the correct temperature.
2. Protect the work area. Clean and dry the surface. Isolate components that will not be covered with foam, secure windows and installations with protective tape.
3. Wear personal protective equipment. The operator should wear a hooded suit, gloves, goggles and a respirator. Isocyanate and polyol can irritate the skin and respiratory tract.
4. Cylinder connection. Connect the red hose to cylinder A (isocyanate) and the blue hose to cylinder B (polyol). Apply the nozzle suitable for the chosen application and open the valves.
5. System test. Before spraying properly, take a test shot into a bag or onto a cardboard box to check that the ingredients mix evenly. If the colour of the foam deviates from the norm, replace the nozzle.
6. Spraying. Guide the gun from a distance of 30-50 cm, with movements parallel to the surface. For the Quick Rise option, keep the gun in constant motion – breaks longer than 30 s can cause the nozzle to freeze. For the Slow Rise option, inject the foam into the cavities slowly, controlling the expansion.
7. Drying time and finish. After applying the layer, wait a few minutes for it to cure. Once fully set, you can trim off the excess foam and cover it with a finish (plasterboard, plaster, paint). Remember that the foam is not UV resistant and needs to be covered outside.

Most common questions and problems

Is Froth-Pak foam flammable? Like any organic product, the cured foam will burn in a direct fire, but it does not support the flame – once the source of the fire is removed, the burning stops. The product has a Euro Class E classification.

What are the safety rules? The manufacturer recommends reading the safety data sheet (MSDS). Use protective clothing, goggles and mask, ensure good ventilation and keep cylinders at working temperature.

Does the foam adhere to any material? Froth-Pak bonds to most substrates: wood, metal, concrete, plaster. However, it does not adhere to polyethylene (PE) and Teflon (PTFE), so the films must be removed before spraying.

How do I calculate the amount of foam needed? The manufacturer suggests a simple algorithm: area (m²) × insulation thickness (l/m²) = litres of foam. For example, a roof with an area of 100 m² and a required thickness of 8 cm (R≈3.6) requires 8,000 litres of foam – for such a project, it is worth considering a 1900 kit with complementary mini-kits.

Is the foam water and frost resistant? The foam contains more than 95 per cent closed cells and is waterproof. It remains stable at temperatures from -150 °C to +100 °C, which allows for use in refrigeration and cryogenics.

How long can the kit be stored? Disposable bottles have a shelf life of approximately 15 months from the date of manufacture. After this time, the ingredients may lose their properties.

Safety and precautions

• Suitable working conditions: store cylinders at 10-25 °C, away from heat sources and UV rays. During spraying, take care of ventilation to evacuate vapours.
• Personal protection: wear overalls, goggles, gloves and a respirator with A2/P3 filter; avoid contact with skin and eyes. Isocyanate can cause allergic reactions and asthma, so sensitive people should take special care.
• Avoid sources of fire and UV rays: the foam is flammable in direct fire and sunlight causes it to yellow and crumble. Outside, it should be covered with a protective layer (paint, plaster, tiles).
• Cleaning and maintenance: the GHA system (gun and hoses) can be cleaned and reused using the special cleaning adapter. If the kit is not used for a long period of time, rinse the hoses, discarding the aged raw materials to prevent caking.

Pros and cons of Froth-Pak

Pros:

• Quick to install, requiring no additional equipment – suitable even on a construction site without electricity.
• Very good insulation with low thickness: λ=0.022 W/(m-K), R=0.45 m² K/W/cm.
• Resistant to water, mould and moisture thanks to closed cells.
• Choice of fast or slow expansion as required.
• A greener HFO-based formula with low GWP.

Minuses:

• High price of kits – for large projects it may be cheaper to use a professional company.
• The weight of the cylinder (17-95 kg) requires transport by trolley and is difficult to carry alone.
• Short working time in QR formula; requires experience to avoid nozzle clogging.
• Does not adhere to PE film and Teflon; surfaces must be prepared.
• Flammability in direct fire requires protection and finishing.

Alternatives and comparison

• Open-cell foams: are cheaper and more flexible, but have a lower R-value and higher vapour permeability. They work well for acoustic insulation, but are not resistant to moisture.
• One-component installation foams: available in small cans, ideal for filling gaps around windows and doors. However, they do not provide a continuous insulation layer or thickness control.
• Mineral wool and polystyrene: traditional materials are cheaper, easy to lay but do not form an airtight barrier. Froth-Pak can be used as a ‘flash & batt’ layer – a thin layer of foam plus traditional wool.
• Professional spray systems: for large projects, it pays to hire a team with a high-pressure unit. Professionals ensure even mixing of ingredients and precise thickness, and the cost is sometimes comparable to buying a large kit.

FAQ – frequently asked questions

What is the insulation value of Froth-Pak? The lambda coefficient is 0.022 W/(m-K) and R≈0.45 m² K/W per 1 cm. This gives the foam one of the highest insulation values in its class.

What is included in the GHA kit? The gun and hose kit (GHA) includes a spray gun, 9 ft, 15 ft or 30 ft hoses, nozzles, spanner and technical petroleum jelly. The components can be cleaned and reused.

Is Froth-Pak compliant with EPB standards? Yes. The manufacturer states that the higher insulation factor compared to traditional insulation helps to meet the Energy Performance of Buildings (EPB) requirements.

How much foam to choose – 180, 600 or 1900? The choice depends on the area and thickness of the insulation. For small renovations, a set of 180 is sufficient (approx. 8 m² at 5 cm), for medium-sized renovations – 600 (approx. 26 m²), and for large projects and industrial applications – 1900 (approx. 84 m²).

What is the use of heating coatings? Heating coatings maintain the required cylinder temperature (24 °C) in a cool environment, which improves foaming performance.

Summary

Froth-Pak insulation foam is the professional solution for quick insulation and sealing of buildings. The 180, 600 and 1900 kits differ in volume, weight and refillability, but each is based on the same eco-friendly formula with very good insulation performance. Choosing between Quick Rise and Slow Rise allows you to match the rate of expansion to the type of project. Remember to prepare thoroughly, wear personal protective equipment and follow the manufacturer’s recommendations before starting work. Properly applied, Froth-Pak foam will provide durable and airtight insulation even in hard-to-reach areas.

If you are planning to buy, check out the Froth-Pak 180 and Froth-Pak 600 kits, as well as accessories, nozzles and heating coatings in our shop. This will help you choose the right kit for your project and achieve a professional result.ces application is ideal on vertical and horizontal surfaces: walls, attics, ceilings. QR is mainly used in residential construction, where speed and the ability to apply several thin layers are important.

Find Froth-Pak 600 kits, as well as accessories, nozzles and heating coatings in our shop. This will help you choose the right kit for your project and achieve a professional result.