ASTM E84 25/50-rated insulation is essential for ensuring fire safety and thermal efficiency in building systems, particularly within HVAC and piping applications. 

But it also helps prevent the spread of flames and smoke in areas where fire hazards are a concern.

If you want to learn more about the ASTM E84 pipe insulation, keep reading as we explore the basics, benefits, and uses of ASTM E84 insulation materials.

The Basics of ASTM E84 Insulation 25/50 Ratings

Understanding the ASTM E84 Standard

The ASTM E84 standard, also known as the "Standard Test Method for Surface Burning Characteristics of Building Materials," assesses how materials react under fire conditions. 

It determines the safety and suitability of materials used in building construction, particularly in areas where fire safety is needed.

Flame Spread Index

The Flame Spread Index (FSI) measures how quickly flames spread across a material's surface. A lower FSI indicates that the material is more resistant to flame spread, which makes it safer for use in HVAC systems, piping, and other applications.

Smoke Developed Index

The Smoke Developed Index (SDI) measures the amount of smoke produced when a material is exposed to fire. The lower SDI, the less smoke is produced. 

This has a tendency to impact the visibility and air quality during a fire, which can make a building safer for individuals who live in the building.

Significance of the 25/50 Rating

Materials achieving an FSI of 25 or less and an SDI of 50 or less are classified under the 25/50 rating.

This classification is significant for enhancing safety in building infrastructure, ensuring that materials do not significantly contribute to fire growth or smoke production, thus providing additional time for evacuation and reducing potential damage.

Benefits of ASTM E84 25/50-Rated Insulation

ASTM E84 25/50-rated insulation plays a significant role in the protection of both property and lives. This is why it’s an important component in the design and implementation of safe building practices. Here are some of the benefits:

Fire Safety

Materials passing the ASTM E84 25/50 test are safer for use in building interiors, particularly in plenum spaces where HVAC ducts are located. These materials are less likely to ignite and spread flames, which give building occupants more time to evacuate a building.

Energy Efficiency

High-quality insulation materials contribute to energy efficiency by reducing heat loss or gain and maintaining consistent temperatures within HVAC systems. This leads to lower energy consumption and costs, which makes the buildings more environmentally friendly and cost effective.

Moisture and Mold Resistance

Many ASTM E84-compliant materials also include a vapor barrier that prevents moisture accumulation. These barriers prevent mold growth and maintain air quality throughout a building, but they are  especially important in environments where clean air is a factor of safety and efficiency, such as hospitals and data centers.

Ideal Uses for ASTM E84 25/50-Rated Insulation

There are also several ideal use cases for ASTM E84 insulation that are important to know. For example:

Plenum Spaces

Plenum spaces are often used for air distribution in buildings. The insulating materials in these spaces meet the stringent fire safety standards to prevent the rapid spread of flames and smoke. 

However, ASTM E84 25/50-rated insulation is ideal for these areas because they can minimize fire risks.

HVAC and Piping Systems

In HVAC systems, insulation helps control temperatures and prevent energy loss. ASTM E84 insulation materials can be used for chilled water systems, refrigeration, and other systems that require reliable thermal control and fire safety compliance.

Critical Infrastructure

Facilities such as hospitals, data centers, and laboratories require the highest levels of safety and efficiency. ASTM E84 25/50 insulation in these environments help protect both occupants and equipment. Not to mention, it helps building systems operate safely and efficiently.

Buckaroo's Support Products Compatible with ASTM E84 25/50-Rated Insulation

1.  CoolDry™ Insulated Sliding Saddles

The CoolDry™ Insulated Sliding Saddles are designed to accommodate thermal expansion and contraction within piping systems, ensuring minimal friction and reducing mechanical stress.

This feature helps dynamic environments where temperature fluctuations are common, such as in HVAC and refrigeration systems. The sliding mechanism also allows the saddles to adjust smoothly and prevent insulation damage and maintain the system’s integrity over time.

2. 3300E Insulated Saddles

The 3300E Insulated Saddles use polyisocyanurate insulation, which is known for its excellent thermal performance and compliance with ASTM E84 25/50 standards. 

This product includes a G-90 steel shield and a Zero Perm vapor retarder, providing robust protection against moisture and ensuring long-lasting durability. The insulation's high thermal resistance also makes it suitable for both hot and cold piping systems that enhance energy efficiency and reduce heat loss.

3. CoolDry™ Insulated Pipe Supports

The CoolDry™ Insulated Pipe Supports feature phenolic foam insulation, which offers superior thermal properties and moisture resistance. This product is particularly advantageous in environments requiring stringent fire safety measures, such as hospitals and commercial buildings. The supports are designed to handle a wide range of pipe sizes that provide reliable insulation and prevent condensation-related issues. The use of phenolic foam also contributes to the product's compliance with ASTM E84 25/50 standards, ensuring safety and efficiency.

These support systems ensure optimal performance and longevity when paired with ASTM E84 25/50-rated insulation, providing comprehensive protection and efficiency.

Protect Your Infrastructure with Buckaroos' Comprehensive Pipe Support Products

Choosing the right insulation is the difference maker in maintaining the safety and efficiency in building systems.

Buckaroos offers a comprehensive range of ASTM E84 25/50-rated piping support products that meet the highest industry standards.

Contact us today for more information.