Mastics and adhesives
Mastic sealant & adhesives
Shop tough adhesives and watertight mastic for insulation and HVAC projects.
Mastic sealants and adhesives from Insulation Industries deliver durable and reliable bonds for projects big and small.
Designed to withstand the toughest conditions, our range offers high-performance options for everyone, from DIY homeowners and residential builders to large-scale commercial and industrial clients.
Harnessing over 50 years of industry experience, we’re here to support your project from start to finish with expert guidance, competitive prices, and quality that stands the test of time.
Shop our comprehensive range of mastic sealants and insulation adhesives for residential, commercial, and industrial applications. Australia-wide delivery available.
Call us today at 02 4910 8000
Advantages of using mastic sealant
Superb bonding power
When you need reliability across diverse materials, mastic sealant is the ultimate solution. It offers a bond that sticks to nearly any surface, from metal and concrete to wood and glass. The impressive adhesion makes it a go-to choice for projects where strength is non-negotiable.
Watertight seals
Built to resist moisture, a mastic sealant creates a watertight seal that stands up to rain, humidity, and exposure. It’s tough enough for outdoor use, while remaining versatile enough for indoor projects. Protecting your spaces from water damage has never been easier.
Excellent flexibility
Unlike rigid alternatives, mastic moves with your materials, adapting effortlessly to temperature changes and physical stress. This insulation sealant won’t crack or lose hold, making it perfect for high-movement areas.
Handles the heat
Engineered to handle extreme temperatures, mastic stays strong where others can’t. Choose this type of ventilation duct sealant for high-heat applications like HVAC systems and industrial machinery. As it won’t lose its hold, it ensures consistent performance.
Tough against chemicals
When you need a sealant that can resist it all, mastic fits the bill. Resistant to oils, solvents, and chemicals, mastic sealant is made for tough industrial spaces. It maintains integrity even in areas with high chemical exposure, standing up to harsh conditions.
Simple application
Application is quick and easy, requiring minimal tools and expertise, which makes mastic sealant a favourite for DIYers and professionals alike. It applies smoothly, setting in place without mess or hassle.
Built for the long haul
Get a seal you can depend on year after year Mastic sealant endures, providing long-term reliability in demanding conditions. This exceptional durability means fewer repairs, even in high-stress environments.
Minimal maintenance
Mastic sealant provides excellent longevity with minimal upkeep, saving you both time and money in the long run. Its low maintenance makes it a smart, cost-effective choice for projects big and small.
Get the most out of your mastic sealant
- Assess the environment: For outdoor projects or applications exposed to temperature changes, choose a flexible, weatherproof mastic. For high-temperature or chemical-exposed environments, opt for heat-resistant or chemical-resistant adhesives.
- Prepare the surface: Ensure surfaces are clean and dry for optimal adhesion. This step is crucial for achieving a durable, long-lasting bond.
- Apply properly: Follow product-specific instructions, allowing adequate curing time. For air conditioning duct sealant, ensure ducts are properly positioned before applying for maximum efficiency.
If you’re not sure which sealant is best for your project, our team is here to help. Contact us for expert advice on selections and applications.
Call us today at 02 4910 8000
Discover durable duct mastic sealants
Optimise HVAC system performance with duct mastics that provide airtight, flexible seals.
Designed to withstand temperature variations and prevent air leakage, our range of mastic air duct sealants improves energy efficiency and maintains consistent air quality by sealing every joint and seam with precision.
Ideal for both new installs and maintenance, our duct mastics offer unmatched durability and reliability for all HVAC applications. Lower energy costs and extend your air conditioning systems life with Insulation Industries.
Call us today at 02 4910 8000
Newcastle’s specialists in mastic sealant and adhesives
Unmatched experience
With over 50 years of hands-on experience, we bring unparalleled knowledge and craftsmanship with every product. Our team knows the specific demands of various applications, equipping you with reliable solutions built to last.
Start-to-finish support
Get dedicated support at every stage, from product selection to expert installation guidance. We’re here to help you find the perfect fit for your project, saving you valuable time, reducing costs, and eliminating unnecessary headaches.
Full range for all applications
Our extensive range of mastic sealants and adhesives can meet any project’s demands. Whether for HVAC systems, insulation work, or robust industrial requirements, you’ll find the ideal products for durability and performance.
Bulk pricing for large projects
Take advantage of our competitive bulk pricing, designed to support commercial and industrial clients. Our premium products and affordable rates make it easy to get the job done while keeping costs under control.
Local experts
Based in Newcastle, we provide easy access to premium mastic sealants and adhesives. Drop by our store for expert guidance and on-site purchasing, so you have everything you need to complete your project smoothly and efficiently.
FAQs
What is mastic sealant?
Mastic sealant is a powerful, flexible adhesive specially formulated to seal joints and gaps across a range of materials, from metal to wood and masonry.
Its strong, watertight and airtight bond ensures durability even under shifting temperatures and exposure to moisture, making it a perfect partner for insulation and HVAC work.
By locking in air and blocking out moisture, mastic sealant strengthens insulation, boosting energy efficiency and helping maintain a stable, comfortable environment—whether in homes or industrial spaces.
Which mastic sealant should I use for insulation projects?
For insulation projects, choose a mastic that offers strong adhesion and thermal resistance. For example, mastic insulation tape is an excellent choice for smaller insulation needs, while industrial adhesives are ideal for larger applications.
Can I use mastic sealant for outdoor applications?
Yes, many mastic sealants are suitable for outdoor use, especially those designed to resist weather, UV rays, and temperature fluctuations.
Be sure to check that the product is rated for outdoor applications, as it will offer the necessary durability and flexibility to handle environmental conditions.
What’s the best way to apply mastic sealant on ducts?
To apply mastic sealant on ducts, first clean the surface to remove dust and debris. Use a brush or applicator to spread a thin, even layer over joints and seams. Allow the sealant to dry before applying additional layers, if needed, to achieve a strong, airtight seal.
How long does mastic or sealant take to dry?
Drying times can vary based on the type of product and application thickness, but mastic and sealants generally dry to the touch within a few hours. For a full cure, however, most require 24-48 hours.
Always check the product instructions for specific curing times to ensure optimal performance.
What is duct sealant, and why is it used in HVAC systems?
Duct sealant is a product used to seal joints, seams, and connections in ductwork, preventing air leaks and improving energy efficiency. It’s especially beneficial for HVAC systems in maintaining proper airflow and reducing energy costs.
Is there a difference between duct mastic and insulation adhesive?
Yes, duct mastic is specifically formulated for sealing ducts and preventing air leaks in HVAC systems, with a flexible finish to adapt to temperature changes.
Insulation adhesive, on the other hand, is used to bond insulation materials together or to surfaces, often focusing on thermal resistance rather than airtight sealing.
Call us today for mastic sealant and adhesives
Whether you’re weatherproofing a home, insulating a new build, or sealing industrial equipment, our range of mastic sealants and adhesives has the solution. Shop now or contact us for expert advice and information on bulk orders.
