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When the job demands a sealant that sticks to metal sheeting, flashings, and gutters without a primer, and then takes paint without cracking, Hi-Flex 60 delivers. You need a seal that won't compromise the finish or degrade under Australian sun. This is the product that performs. It holds tight, stays flexible, and maintains its integrity on your most exposed metalwork.
Hi-Flex 60 was engineered to meet the specific demands of sheet metal construction. It's an isocyanate-free MS Polymer sealant with outstanding primerless adhesion to common roofing and cladding metals like Colorbond, galvanised steel, aluminium, and Zincalume. Unlike traditional silicone sealants, Hi-Flex 60 is paintable, allowing seamless integration with painted metal components. Its formulation provides excellent UV and weathering resistance, ensuring long-term durability in exposed conditions, preventing premature degradation and callbacks.
Hi-Flex 60 is designed for user-friendly application. Surfaces must be clean, dry, and free of contaminants. For non-porous substrates like metals, roughen the surface slightly with an abrasive pad, then clean using a two-wipe process with Xylene. For critical applications on non-porous surfaces, or metals like copper/brass, use Adheseal 50A Surface Prep. For porous surfaces such as concrete or brick, prime with Everflex Supaprime. Tool the sealant immediately after application, within its approximately 10-minute skin time, using a moistened spatula for a smooth finish. Clean up uncured product and tools with Xylene; cured material requires mechanical removal. For skin contact, use Adheseal Hand Wipes. Apply between 5°C and 40°C.
Hi-Flex 60 typically serves as the primary sealant in exterior construction where metal components are prevalent. Its primerless adhesion to most common construction metals simplifies installation, but for optimal, long-term performance in high-stress or extreme exposure joints, consider a primer. On non-porous surfaces like aluminium or powder-coated metals, a wipe with Adheseal 50A Surface Prep enhances adhesion. For porous substrates like concrete or masonry, prepare the surface with Everflex Supaprime. Control joint depth with an open-cell backer rod from the Adheseal backer rod range, ensuring a 2:1 width-to-depth ratio for optimal movement. Always prevent three-sided adhesion by using backer rod or a bond breaker tape.
Yes, Hi-Flex 60 is suitable for internal and external applications. The MS polymer formulation provides excellent UV and weather resistance while maintaining movement capability up to ±25%. It is designed for exposed construction joints, fabrication work, and weather-facing assemblies.
No, Hi-Flex 60 is not suitable for long-term immersion. The TDS specifically excludes internal swimming pool applications and advises avoiding high chlorine exposure. Using it below permanent water level can lead to reduced performance and premature failure.
Often no, but critical applications may still require priming. Hi-Flex 60 achieves primerless adhesion on many common substrates, though multi-storey joints, extreme weather exposure, and demanding movement conditions should follow the documented priming recommendations.
Hi-Flex 60 handles movement up to ±25%. This movement capability helps maintain sealed joints where construction materials expand and contract at different rates. Correct joint design and two-sided adhesion are still required for proper performance.
Yes, Hi-Flex 60 can be painted with acrylic, oil, and rubber-based paints. Adhesion testing is recommended before full application. Non-flexible paints may crack if joint movement exceeds the coating flexibility.
| Application | Key benefit | Primary trades |
|---|---|---|
| Prefabricated concrete panel joints | Handles movement up to ±25% while maintaining a waterproof flexible seal | Commercial builders, façade installers |
| XPS foam core reinforced sandwich panels | Strong adhesion with flexible bonding across dissimilar materials | Panel fabricators, cold room installers |
| Aluminium fabrication | Non-corrosive adhesion with strong UV and weather resistance | Metal fabricators, shopfitters |
| Acoustic ceiling tiles | Low odour and low VOC formulation suited to occupied internal environments | Ceiling contractors, fit-out trades |
| Bolted lap joints and seam sealing | Flexible sealing reduces moisture ingress and vibration-related joint stress | Transport manufacturers, mechanical trades |
| Display signage and public-area joints | Shore A 55 hardness improves resistance in demanding environments | Sign installers, maintenance contractors |
Wear gloves and safety glasses. Wash hands before eating, drinking, smoking, or using the toilet.
Use in well-ventilated areas and remove affected persons to fresh air if inhalation symptoms occur.
Store correctly to maintain the 12-month shelf life. Clean uncured product with Xylene. Remove cured material mechanically.
This guide covers the key preparation and priming steps that affect long-term adhesion performance with Hi-Flex 60.
Surface prep: Slightly roughen aluminium, anodised aluminium, stainless steel, PVC, galvanised steel, powder coated metals, glazed tiles, and waterproof membranes using a fine abrasive pad. Clean using the two-wipe process with a suitable cleaner such as Xylene.
Primer: Optional. For critical applications, pre-treat with Adheseal 50A Surface Prep and allow 30 minutes to 2 hours before sealant application.
Surface prep: Concrete, cement renders, aerated concrete, mortar, and brick must be structurally sound, clean, dry, and cured for at least 28 days before application.
Primer: Required for critical applications. Apply Everflex Supaprime by brush and allow 30 minutes to 2 hours before sealing.
| Property | Value |
|---|---|
| Product Name | Adheseal Hi-Flex 60 |
| Product Type | MS Polymer Based Hybrid Adhesive Sealant |
| Base Chemistry | MS Polymer |
| Curing System | Neutral |
| Consistency | Non-Sagging Paste |
| Movement Capability | +/-25% ASTM C719 |
| Hardness Shore A | 55 ASTM D2240 |
| Elongation At Break | 200% approx ASTM D412 |
| Tensile Break | 0.83 MPa ASTM D412 |
| Modulus At 100 Percent Elongation | 0.8 MPa ISO 37 |
| Skin Time | 10 minutes approx at 23°C and 50% RH |
| Cure Rate | 3mm per 24 hours at 23°C and 50% RH |
| Application Temperature | 5°C to 40°C |
| Service Temperature | -40°C to 100°C |
| Density | 1.45 +/- 0.05 ASTM D1475 |
| VOC | 1.5g/L |
| Shelf Life | 12 months |
| Colours | Black, White |
| Packaging | 600ml sausage |
| Clean Up | Xylene, Adheseal citrus wipes |
| Staining | Non staining ASTM C510 and ASTM C1248 |
| Features | Primerless adhesion on most common substrates, UV resistant, paintable, low odour, non-corrosive, waterproof flexible joint |
| Suitable Substrates | Masonry, fibre cement board, brick, XPS foam core reinforced sandwich panel, metal excluding lead and copper, timber, plasterboard, plastics, stone, painted surfaces, rubber, fibreglass, porcelain, aluminium, powder coat |
| Limitations | Not suitable for long term immersion, swimming pools, structural glazing, aquariums, EPDM rubber, bituminous substrates, confined spaces without humidity access |
Here are some common examples on where Adheseal Hi-Flex 60 MS polymer Adhesive used by our customers.
