Insulation Refractory& Acoustics Group
Where innovation meets perfection in HT materials and acoustic insulation
Iconic Guitars of Rock Legends
Custom printed high-resolution artwork on acoustic fabric panels — combining stunning visual art with professional sound absorption.
The Sunburst Fender Stratocaster
Whose is it?
Most famously linked to Stevie Ray Vaughan (who called his favorite one "Number One") and Jimi Hendrix.
The Vibe
Known for its "quack" and bell-like tones, it's the quintessential blues and rock guitar.
The Black Gibson SG
Whose is it?
The definitive guitar of Angus Young from AC/DC. While he usually plays a cherry red one, the black SG is also a staple for Tony Iommi (the father of heavy metal from Black Sabbath).
The Vibe
Known for its double-horn shape and aggressive "bite," it's built for heavy riffs and high-energy stage antics.
The Sunburst Gibson Les Paul
Whose is it?
The "Holy Grail" of guitars, synonymous with Jimmy Page of Led Zeppelin and Slash from Guns N' Roses.
The Vibe
Famous for its thick, creamy sustain and arguably the most coveted electric guitar model in history.
✨ Fun Fact: All three of these models were originally designed in the 1950s and early 60s, yet they remain the industry standard today.
Ceiling Insulation
Glasswool Thermal & Acoustic Ceiling Insulation — keeps you warm in winter and cool in summer.
A Legacy Reimagined: Three Leaders, One Vision
For decades, Aeroinsul, Truesound Acoustics, and Insulation Refractory Consultants (IRC) have been trusted names in South Africa's engineering and contracting landscape. Each has built a reputation for precision, reliability, and technical excellence. Today, these industry leaders unite under one banner—the Insulation Refractory and Acoustic Group—to deliver integrated solutions that redefine performance and comfort.
By consolidating our expertise, we provide a turnkey offering in thermal, refractory, and acoustic engineering—bridging the gap between industrial resilience and architectural innovation.
Our Heritage: The Pillars of the Group
Insulation Refractory Consultants (IRC)
The backbone of our industrial expertise, IRC has long been a premier importer and installer of ceramic fiber and high-temperature refractory products. With deep roots in the steel and brick industries, IRC established its reputation by mastering extreme thermal environments and furnace technologies.
Aeroinsul
Aeroinsul has set the benchmark for energy efficiency in homes and businesses across South Africa. As an Isover-approved installer, Aeroinsul pioneered ceiling and roof insulation solutions (Aerolite), ensuring compliance with SANS 10400-XA standards. Aeroinsul has helped thousands of clients reduce energy costs, stabilize internal environments, and lower their carbon footprint.
Truesound Acoustics
Where engineering meets artistry, Truesound Acoustics has led the field of sound control for more than 20 years. With over 500 successful installations—including studios for Urban Brew, Joburg Civic Theatre, and Marula Media—Truesound has become synonymous with acoustic precision. From bespoke fabric-wrapped panels to bass traps, every solution is engineered to deliver "True Sound" as a scientific reality.
What Are You Looking For?
Let us help you find the right solution for your needs
What Our Clients Say
Trusted by businesses across South Africa for quality insulation solutions
"The guys were a great pleasure to work with. and also, thank you very much for all your assistance, many of your suggestions have proved to be very helpful."
Kabelo Khoza
"Thank you so much for helping me out with offering cheap solutions and providing such great quality products. Thank you so so much for your help."
Jarred Mann
"Thank you for the great service, communication, certificate and for fitting me in on such short notice."
Riyaad Hassim
"Dankie vir julle mooi en harde werk"
Maritza De Beer
Featured Projects
See how we've helped businesses achieve their insulation goals
Maroela Media Recording Studios
99% reduction in sound bleed between rooms
Barry Berk Studio
Studio-grade acoustic performance
Klank Bank
Professional podcast-grade acoustics