Our vision: setting the measurable standard for sealing performance
Schlegel’s vision is to achieve the highest possible standard of sealing function for every application. That means continuously investing in technology and testing new compounds, refining existing formulations, and measuring results against independently verified benchmarks to keep exceeding expectations, shape the future of building products and create smarter, more efficient, and more sustainable solutions for customers around the world.
Our values: precision, accountability and customer-led development
Three core values govern how Schlegel operates. First, precision: every product is engineered to defined performance standards. Second, accountability: Q-LON seals carry a minimum 10-year lifespan backed by BS5750 quality assurance. Third, customer-led development: working directly with fabricators and OEMs to design dedicated solutions for specific frame materials and environmental conditions.
Our ethics: Acting with integrity in every decision we make
As part of Quanex (NYSE: NX), Schlegel really is part of something bigger. Which is why we are always looking for better ways to serve our customers and empower our people to lead with integrity and go above and beyond to deliver quality and reliability. We build trust and respect through transparency and teamwork and open, honest conversation. And we prioritise safety and well-being in every workplace.
Get in Contact
Contact us do discuss every aspect of our sealing solutions for windows and doors.
Technical information, brochures and product data sheets
Access the full Schlegel technical library including product data sheets for Q-LON, brush pile and extruded seals, downloadable brochures covering EN 12365 compliance, and installation guides for timber, aluminium and uPVC applications. All documents are available to download free of charge.