Key takeaways:
Purocol Express is a high-strength polyurethane adhesive trusted by Australian builders.
Delivers fast curing and long-lasting bonds on common building materials.
Suited for interior and exterior work with D4 waterproof performance.
When strength matters, builders across Australia rely on Purocol Express by Soudal. This transparent, professional-grade polyurethane construction adhesive is designed for durable, high-performance bonding across a wide range of substrates.
Why Purocol Express Outperforms Traditional Construction Adhesives
Purocol Express creates a permanent, high-strength connection between porous materials like timber, concrete, and stone. It’s solvent free and delivers superior final strength compared to traditional solvent-based adhesives. Once cured, it forms a rigid bond that outlasts the materials it joins.
Built for Wet Conditions: Moisture-Resistant and Reliable
Thanks to its D4 waterproof rating, Purocol Express performs reliably in humid or damp environments. As a polyurethane-based adhesive, it reacts with moisture to cure and expand slightly, ensuring deep penetration into timber fibres and strong adhesion even on moist substrates. It’s ideal for Australia’s variable weather and works where solvent adhesives can fail.
Where You Can Use Purocol Express
Structural timber and framing
Bonds joists, beams, noggins and timber-to-concrete interfaces. Reduces movement and squeaks when used on tight joints with fixings. Suitable for interior and exterior framing where moisture resistance matters.
Joinery and cabinetry
Ideal for cabinet carcasses, benchtop build-ups, trims and mouldings. The clear bond line supports neat finishes before painting or sealing. Works well with close-fitting joints and light clamping.
Flooring and decking
Provides a tough adhesive layer beneath boards and panels, complementing mechanical fixings for long-term stability. Helps limit flex and racking over time, and performs in humid or coastal conditions thanks to its D4 rating.
Doors and windows
Secures frame components and packers before fixing. Assists with racking resistance and long-term alignment. Use with proper perimeter sealing to limit moisture ingress.
General building tasks
Suitable for timber, concrete, brick, stone and many other porous substrates. Performs across interior and exterior fit-outs and maintenance. Delivers maximum final strength when used on close-fitting joints.
Low VOC and Professional Quality
Formulated with low VOC content and free from solvents, Purocol Express supports safer, cleaner worksites. It’s the go-to adhesive for healthy home builds and professional applications where long-term durability is essential.
Pro Tips for Using Purocol Express
Prep and fit
Clean, dry, dust-free surfaces give the best results. Aim for close-fitting joints so the adhesive cures within the joint rather than spanning gaps.
Moisture and curing
Lightly damp substrates can improve curing. Avoid standing water or saturated timber. Allow for temperature and humidity—cooler, drier conditions slow curing.
Application
Apply a consistent bead and bring parts together promptly. Use even pressure across the joint to spread adhesive. For large assemblies, work in manageable sections.
Clamping and fixing
Clamp or mechanically fix to maintain tight contact while curing. Keep clamping until the adhesive has set and avoid applying load until fully cured.
Finishing and cleanup
Trim squeeze-out with a sharp knife after curing, then sand if required. Remove uncured residue with PU cleaner or wipes, and test paint compatibility before coating.
Final Thoughts
Purocol Express is a practical, professional adhesive for builders who need reliability in all conditions. Its D4 waterproof rating, fast curing, and transparent finish make it ideal for both visible joinery and structural applications. Whether you’re working on framing, decking, or cabinetry, Purocol Express delivers the performance and strength you can trust on every job.
Learn more about Purocol Express or visit your nearest Soudal Australia stockist today.
Purocol Express FAQs
Is Purocol Express waterproof?
Yes. Purocol Express is rated D4, making it ideal for both interior and exterior use. It provides long-lasting protection against moisture exposure.
What materials does Purocol Express bond?
It bonds timber, concrete, stone, brick, and many other porous materials. For coated or plastic surfaces, it’s best to test adhesion first.
How long does Purocol Express take to cure?
It has a fast initial grab and typically achieves full cure within 24 hours, depending on humidity and temperature.
Can I sand or paint Purocol Express after curing?
Yes. Once fully cured, excess adhesive can be sanded flush and painted if required.