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Fire Rated Ductwork

Find products Resources Passive Fire Protection
DUCTRock Slab, fire protection

Ductwork runs throughout many large buildings, delivering and removing both hot and cold air to maintain a comfortable climate for occupants. Unfortunately, these vital networks also offer the perfect pathway for a fire. 

Fire rated ductwork improves the safe operation of heating, ventilation and air conditioning (HVAC) systems by minimising the chance of fire spread. 

Effective fire resilient insulation acts as a barrier between ducts, to slow down or prevent the passage of flames and smoke around the building. 

Discover how ROCKWOOL products can increase the safety and efficiency of residential, commercial and leisure constructions.

Table of contents

  1. Why do we need fire rated ductwork
  2. Calculator and savings
  3. Why choose ROCKWOOL solutions
  4. Installation
  5. Downloads and resources
  6. Financial support
  7. FAQ
  8. Other relevant applications
Find inspiration, guides and reports

Fire Rated Ductwork Insulation Products

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Fire Duct system: Fire Duct Slab, Fire Duct Section and Fire Duct PSM

The ROCKWOOL Fire Duct Systems consists of 3 products: Fire Duct Slab, Fire Duct Section and Fire Duct PSM

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FirePro® DuctRock

DuctRock provides up to 2-hours’ fire protection to ductwork and can maintain performance through compartment walls and floors.

Why do we need fire rated ductwork?

Large residential and commercial properties often use HVAC systems to create a comfortable indoor environment. In order to keep spaces cool or warm, ductwork systems will travel through a multitude of rooms within a building often penetrating compartment walls and floors.

These ducts, however, can quickly spread fire if one should break out, transmitting hot gases and toxic smoke around the building. During such a fire, the temperature in the duct can be up to 800°C and beyond. This elevated temperature rise requires high-end, specialised insulation solutions to protect the people inside these buildings. 

ROCKWOOL fire rated duct products can help minimise the risk this poses, and protect lives.

Relevant resources
Why stone wool?
Learn more
HVAC Systems Guide
Download here
CPD: A guide to HVAC standards and applications
Book now
CPD: EN Tested Fire Duct Systems
Book now
HVAC Calculator
Access here

Calculator and savings

The amount of fire rated duct insulation required will depend on the size of the building’s network, and the shape of the ducts themselves. 

The primary purpose is to improve the fire safety of constructions. However, ROCKWOOL’s ductwork solutions are made from stone wool, which introduces the additional benefit of reducing thermal transmission. 

This improves the energy efficiency needed to  keep hot and cold air at their optimum temperatures when transported around a building – reducing energy requirements and leading to financial savings. 

Learn about energy efficiency
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Why choose ROCKWOOL solutions?

ROCKWOOL solutions for ductwork fire protection have been developed and tested according to the latest European fire safety standards 2. ROCKWOOL fire duct solutions are fully tested for fire resistance and can provide up to 2hrs fire protection.

We offer a variety of fire rated ductwork products to suit different construction types and applications – with solutions for circular, square and rectangular ducts. 

Our solutions include Fire Duct Slab, Fire Duct Section and the latest DuctRock system. The latter provides a patented horizontal penetration detail at dry walls, which is unique in the industry.

ROCKWOOL solutions for ductwork not only protect in case of fire, but are beneficial for reducing thermal transmission and unwanted noise as well.

 

Benefits of ROCKWOOL solutions include 3:

  • Fire resilience
  • Temperature regulation
  • Improved energy efficiency
  • Adaptable for different building designs
  • Acoustic dampening
Find ROCKWOOL products
We have developed a range of fire safe solutions, specifically engineered to ensure maximum safety and minimise the risk of fire spread. Large scale fire tests at an accredited fire laboratory ensure optimal fire safety levels up to 120 minutes.

Rob Kooiker

ROCKWOOL Group Product Manager

Installation

ROCKWOOL products are easy to handle and install, as they come with detailed installation guidelines.

 

Our solutions are designed for fast application in tight fitting spaces, and offer flexible installation for use with different fixing options, including:

  • Welded pins
  • Alternative joint methods
  • Mitre-joint fixing
  • Mitre-joint methods

 

To install the DuctRock system on rectangular and square ductwork, you need a combination of welded pins, ROCKWOOL FIREPRO Glue and ROCKWOOL black aluminium foil tape for fast and cost-effective installation. For optimal installation, please consult available installation guidelines and always use a certified and professional installer. 

 

Key tips4:

  • Pick the right insulation for the right shape – certain products are designed to suit circular, rectangular or square ductwork.  
  • Optimise installation – use effective aluminium tape to seal any gaps to reduce thermal bridges and maintain an effective vapour barrier. 
  • Use a registered installer – for peace of mind, an experienced certified installer can assess your building, advise on the best products to use and install the products safely.
Guides for professionals

Download our FIREPRO Book

FirePro Book.pdf
PDF
10.3 MB
16 Feb 2024

FirePro Book Feb 2024

Passive fire protection is a critical component of any fire safety strategy. In the FirePro® Book you can find products for a range of specialist passive fire protection applications.

FAQs

What is the best material for ductwork?
What is fire stopping?
What is the melting point of stone wool?

ROCKWOOL Group