Today&#;s Homeowner exists to help you maintain or improve your home safely and effectively. We uphold strict editorial standards and carefully vet the advice and resources referenced in our articles. Click below to learn more about our review process and how we earn money.

Read more

Why You Can Trust Us

Phenolic plywood is a high-quality engineered wood product that&#;s gaining popularity among homeowners and contractors alike. This versatile material offers a unique combination of durability, water resistance, and aesthetic appeal, making it an excellent choice for various home improvement projects. Whether you&#;re planning to upgrade your kitchen cabinets, install new flooring, or tackle a DIY furniture project, phenolic plywood might be the perfect solution.

In this comprehensive guide, we&#;ll explore everything homeowners need to know about phenolic plywood. From its composition and uses to its advantages and alternatives, we&#;ll cover all the bases to help you make an informed decision for your next home project.

What Is Phenolic Plywood?

Phenolic plywood is a wooden board commonly used in commercial and residential construction. It is an engineered material, which means that they are created by combining and binding pieces of scrap wood, sawdust, or wood fibers, as well as genuine wood using adhesives. Phenolic plywood combines the strength of traditional plywood with the durability of synthetic resin. Unlike standard plywood, phenolic plywood features a unique construction that sets it apart in terms of performance and longevity.

The core is then covered using a veneer, which is the outer section. It is either made of birch and other types of wood or thick paper. However, unlike the material&#;s core, its veneers are soaked and coated in a synthetic resin called phenolic. The resin acts as a coat and, at the same time, as an adhesive, which makes it superior to modern plastics.

Thus, it is named phenolic plywood.

Phenolic Plywood Composition and Manufacturing

Phenolic plywood consists of two main components: the core and the outer layers.

The core is typically made of multiple thin layers of birchwood, often 13 to 15 layers for a ¾-inch sheet. These layers are stacked and bonded together under high pressure to create a strong, stable base.

The outer layers, or veneers, are what give phenolic plywood its distinctive properties. These veneers are made of either birch, other types of wood, or thick paper. What sets them apart is the phenolic resin coating. This synthetic resin acts as both an adhesive and a protective layer, enhancing the plywood&#;s durability and water resistance.

What Are Common Uses for Phenolic Plywood?

Phenolic plywood&#;s unique properties make it suitable for a wide range of applications in both residential and commercial settings. Here are some of the most common uses:

• Construction: Some contractors use phenolic plywood for cement forms due to its non-stick properties.
• Cabinetry: Kitchen and bathroom cabinets benefit from phenolic plywood&#;s moisture resistance and durability.
• Furniture: The material&#;s strength and smooth finish make it ideal for various furniture pieces.
• Flooring: Specialized anti-slip phenolic boards are excellent for areas prone to moisture.
• Countertops: The water-repellent surface makes it a popular choice for kitchen and bathroom countertops.
• Laboratory and store fixtures: Its smooth, easy-to-clean surface is perfect for environments where cleanliness is crucial.

What Are the Advantages and Disadvantages Phenolic Plywood?

Phenolic plywood also has pros and cons. Here are a few to take note of.

Durability: The synthetic resin coating makes phenolic plywood highly resistant to cracks, scratches, and splitting.

Water resistance: Although not waterproof, phenolic plywood repels water and moisture effectively, making it ideal for humid environments. 

Fire resistance: The phenolic resin coating provides some degree of fire resistance, enhancing safety in the home.

Rot and mold resistance: The non-porous nature of the material helps prevent rot and mold growth.

Bacteria and fungi resistance: Phenolic plywood naturally repels bacteria, fungi, and mildew, making it a hygienic choice for kitchens and bathrooms.

Color options: The material is available in various natural colorations that can last for years with proper care

Cost: Phenolic plywood is usually more expensive than standard plywood and engineered wood products.

Limited water resistance at edges: While the surface is water-resistant, the edges may still absorb water if they&#;re not sealed.

Painting difficulties: The smooth, non-porous surface doesn&#;t bond well with regular paint, limiting customization.

Availability: Phenolic plywood may be harder to find in some areas.

Cost and Longevity

When considering phenolic plywood for a home project, it&#;s essential to factor in both the initial cost and the long-term value.

Cost

The price of phenolic plywood can vary depending on the specific type, thickness, and quality. Generally, it&#;s priced similarly to high-quality hardwood or marine-grade plywood. While the up-front cost may be higher than standard plywood, the durability and longevity of phenolic plywood can make it a cost-effective choice in the long run.

Longevity

With proper care and maintenance, phenolic plywood can last for 20 years or more. This long lifespan makes it an excellent investment for homeowners looking for durable, long-lasting materials for their projects.

Types of Phenolic Plywood 

Phenolic plywood comes in various types to suit different applications and preferences. Understanding these options can help homeowners choose the right product for their specific needs.

Color Options

You can find phenolic plywood in several colors, allowing for a product that complements your design. Colors include:

• Yellow
• Red
• Dark brown
• Light brown
• Natural wood brown
• Green
• Black

Specialized Phenolic Plywood

Some manufacturers offer phenolic plywood products designed for specific applications.

This type is designed for concrete shuttering. It features a surface covered with impregnated paper made from natural wood pulp and cotton linter, offering superior water resistance and non-absorbent properties.

This product combines a high-grade birch wood core with phenolic resin-coated veneers. The edges are typically sealed with acrylic paint for enhanced moisture resistance.

What Are Some Alternatives to Phenolic Plywood?

While phenolic plywood offers many benefits, it may not be ideal for every project or budget. Here are alternatives to consider.

Medium-Density Fiberboard (MDF)

MDF is an engineered wood product made by combining wood fibers with adhesive. It&#;s generally more affordable than phenolic plywood and is environmentally friendly. However, it&#;s not as durable or moisture-resistant as phenolic plywood.

Polyurethane Board

Polyurethane boards offer similar water-repellent properties to phenolic plywood at a lower cost. While not as durable as phenolic plywood, adding fiberglass veneers can enhance their toughness.

Particle Board

Particle board is the most budget-friendly option, made from recycled wood particles. It&#;s commonly used for decorative purposes rather than structural applications due to its lower durability.

Phenolic Plywood Maintenance and Care

To maximize the lifespan and performance of phenolic plywood, proper maintenance is crucial. Here are some tips for caring for phenolic plywood:

• Clean regularly: Use a mild soap and water solution to clean the surface, avoiding harsh chemicals that could damage the resin coating.
• Seal edges: Apply a sealant to any exposed edges to prevent water absorption.
• Avoid prolonged water exposure: While water-resistant, phenolic plywood isn&#;t waterproof. Wipe up spills promptly to prevent damage.
• Use appropriate fasteners: When installing phenolic plywood, use stainless steel or other corrosion-resistant fasteners to prevent rust stains.
• Inspect regularly: Check for any signs of wear or damage, especially in high-moisture areas, and address issues promptly.

Phenolic Plywood Applications Beyond Home Improvement

Considering the versatility and durable properties of phenolic plywood, its applications extend beyond conventional home environments. Here are some innovative uses that highlight its adaptability:

Marine Uses

Because of its resistance to water and mildew, phenolic plywood is often employed in marine environments. This includes boat interiors, dock surfaces, and other applications where moisture exposure is a significant concern. Its durability makes it an excellent option for long-lasting marine structures.

Industrial Applications

The resilient nature of phenolic plywood makes it suitable for industrial contexts. It can be used for the construction of robust workbenches, industrial flooring that requires high durability, and even as a material for industrial cabinetry where both strength and resistance to wear and tear are necessary.

Recreational and Sports Facilities

Given its non-slip properties and strength, phenolic plywood is also used in recreational and sports facilities. Skate parks, gymnasium floors, and other areas requiring a durable yet forgiving surface can benefit from phenolic plywood. Its water resistance also makes it appropriate for outdoor sports settings.

Transport Industry

In the transport industry, phenolic plywood is used to construct durable vehicle floors for buses, trucks, and trailers. The material&#;s toughness allows it to withstand heavy use, while its resistance to moisture ensures longevity in various climates and conditions.

Final Thoughts About Phenolic Plywood

Phenolic plywood stands out as a durable, versatile, and aesthetically pleasing material for various home improvement projects. Its combination of strength, water resistance, and longevity makes it an attractive option for homeowners looking to invest in quality materials.

While the initial cost may be higher than some alternatives, the long-term benefits of phenolic plywood can outweigh the up-front expense for many applications. By understanding its properties, uses, and care requirements, homeowners can make informed decisions about incorporating this material into their projects, potentially enhancing both the functionality and value of their homes.

View(s)

Quality Phenolic foam boards*

Not all insulation boards are the same. Compact phenolic panels are different. Phenolic foam is considered one of the best material for thermal insulation.
This post outlines Phenolic boards &#; the most effective type of rigid insulation boards used at present. Being up to 50% more effective than other common insulation materials. Phenolic insulation achieves a lambda value of just 0.018 W/m·K across all thicknesses. It can be used in a variety of roof, wall and floor applications, which makes it a great solution for a range of constructions.

Various Gutter Shapes You Need to Know

Short history of phenolic insulation

You will get efficient and thoughtful service from Langfang Clear Chemical.

Explore more:
What Are the Benefits of Installing an FRP Fence?

Phenolic insulation became popular in the s as a thin board that could meet the increased energy saving demands of the day and fit within the constrained spaces older buildings offered for insulation.
Kingspan, an Irish company has been producing and selling Kooltherm in Europe since , introducing it in the U.S. in . It was a response to the energy crisis, which called for greater insulation efficiency. As regulations required higher R-value insulation in roofs, a demand arose for material which offered both fire resistance and high R-value, while not requiring a full roofing re-build to accommodate its thickness.

 

Phenolic insulation. What is is made of ?

Phenolic insulation is made of high solids and phenolic resin with a surface acting agent. &#;Pentane&#; is a blowing agent (straight chain alkane consisting of 5 carbon atoms).
Phenolic board is manufactured by a process in which a plastic foam forms an insulating core between two flexible tissue faced layers. It has a high closed cell content and fine cell structure.

 

How do I know which product to use?

There are only a few main players on the market - Kingspan® followed by Xtartherm®. Two of them started their activities in Ireland. Perhaps because many houses in Ireland, particularly those built prior to , were not energy efficient and poorly insulated.

While Kingspan offers only Kooltherm K-range, Xtratherm seems to offer a bit more.  Xtratherm has products for specific projects. Depending on the application, you can choose between:

Soffit phenolic boards | Drylining  | Cavity wall phenolic boards | Florring phenolic boards | Rainscreen phenolic boards | Roofing phenolic boards | Steel and timber frame

 

XTRATHEM®

Xtratherm SR/CW Cavity Wall Insulation Board Xtratherm Safe-R - is a top-class phenolic foam rigid cavity insulation board with a low emissivity foil facings designed for use in traditional masonry walls.

Xtratherm Safe-R SR/TB Insulated Plasterboard is a combination of premium phenolic insulation core with a composite foil facing bonded to 12.5mm tapered edge plasterboard for drylining internal walls.

Xtratherm SR/UF Safe-R Phenolic Foam Underfloor Insulation Board -is a top-class rigid phenolic foam insulation board with a low emissivity aluminium foil facings designed for ground supported floors, suspended floors and underfloor heating (UFH).

Xtratherm Rainscreen Cladding Xtratherm Safe-R SR/RS is a high-class rigid phenolic insulation board with a low emissivity foil facings designed for ventilated rainscreen cladding applications in new build and refurbishment projects.

Xtratherm Safe-R SR/PR is a high-class rigid phenolic foam insulation board with a low emissivity foil facings designed for pitched roofs, sloped roofs, ventilated roofs, hybrid roofs and warm roofs.

Xtratherm Soffit Insulation Board Xtratherm Safe-R SR/ST is a high-class rigid phenolic insulation board with a low emissivity foil facings designed for structural ceiling applications.

Xtratherm Soffit Plus Insulation Panel Xtratherm Safe-R SR/STP (Decorative Finish) is a top-class two-in-one composite insulation board which provides an effective thermal and fire performance solution in structural ceiling applications for commercial and residential buildings.

Xtratherm Framing Board Xtratherm Safe-R SR/FB is a top-class rigid foam insulation board with a low emissivity foil facings designed for use with steel and timber frame applications up to 18m in height.

 

KINGSPAN®

The Kingspan Kooltherm K-range comprises the thinnest commonly used insulation products for any specific U-value. With a fibre-free rigid thermoset phenolic core, and a thermal conductivity of 0.018 - 0.023 W/mK, these are the most thermally efficient insulation products commonly used.

 

K103 Kingspan Kooltherm Floor - is an exceptional performance rigid phenolic foam floor insulation board with a glass tissue facings designed for suspended floors, ground supported floors and underfloor heating systems (UFH).

Kingspan Kooltherm K118 Insulated Plasterboard - Dry Lining Insulated Board is a top-class three-in-one product for internal wall insulation used as mechanically fixed and adhesively bonded 'dot and dab' insulated plasterboard.

Kingspan Kooltherm K5 Phenolic External Wall Insulation Board -  is a high-performance rigid thermal insulation board designed for external wall insulation behind traditional and lightweight polymer modified renders and dry cladding systems.

Phenolic Boards vs Compressive Strength

In addition to withstanding humidity, they are very hard and resistant. High density boards have a good compressive strength and are suitable for some floors. Phenolic foams are produced with densities in the range of 35 kg/m³ to 200 kg/m³. 

Phenolic insulation vs Moisture

Special coating gives phenolic panels special protection against moisture. Closed cell content makes it highly resistant to water penetration. You are free to copy and share the text from this blog, as long as you provide proper credit and a link to the original source-https://insulationgo.co.uk/. Any moisture ingress is limited and confined to the punctured area. As they&#;re closed cells they shouldn&#;t absorb moisture or water vapour, unlike open cell products. Phenolic boards are often used in particularly damp environments such as bathrooms and toilets. 

Phenolic insulation vs Thermal Conductivity

The boards achieve a thermal conductivity (λ&#;value) of:

0.023 W/m.K (15&#;24 mm)
0.021 W/m.K (25&#;44 mm)
0.020 W/m.K (&#; 45 mm)

 

Is phenolic foam expensive?

Phenolic boards will likely be the most expensive of all the rigid foam insulation options available on market, however being low thermal conductivity insulation enables high levels of thermal performance to be achieved utilising thinner sections of insulation.

 

Phenolic insulation thermal conductivity

The thermal conductivity of phenolic closed cell insulation material is generally between 0.018 W/m.K and 0.023 W/m.K.

 

Phenolic application

Phenolic foam boards are available to suit most new buildings or refurbishment applications.
Used extensively in the building industry for a number of application areas including roofing, cavity board, external wall board, plaster board dry linings systems, floor insulation 
 

Space saver insulation

The exceptionally low thermal conductivity of closed cell phenolic foam boards means that appropriate insulation efficiency can be achieved with the thinnest possible material.

 

Timing is everything

Due to its firmness and water resistance, insulation will generally last 100 years or more.

Deterioration

Phenolic foam insulation will deteriorate if it is exposed to sunlight for extended periods of time.

 

*All the information provided in the content published on Insulationgo blog is for informational and educational purposes only. Insulationgo LTD makes every effort to ensure the accuracy and timeliness of the content, but we do not assume any responsibility for any errors or omissions.

The information presented on this blog should not be considered as professional advice or a substitute for consulting relevant experts. Before making any purchase decisions or taking action based on the information presented here, it is strongly recommended to contact the product manufacturer directly to verify the details and ensure its suitability for your specific needs.

By using this blog, you acknowledge and agree that Insulationgo LTD shall not be held liable for any damages, losses, or inconveniences arising from the use or reliance on the information provided herein. This limitation of liability applies to all users of the blog, including but not limited to visitors, readers, and subscribers.

 

Contact us to discuss your requirements of Phenolic Foam Board. Our experienced sales team can help you identify the options that best suit your needs.