Imagine a world where renovating old buildings doesn't just patch up the past—it transforms it into a greener, more energy-efficient future. That's the exciting promise of BASF's groundbreaking Cavipor® clay foam, a mineral-based insulator that's shaking up the insulation market like never before. But here's where it gets truly fascinating: this isn't just another product; it's pioneering an entirely new category of materials designed for sustainable living. And this is the part most people miss—how it could redefine what we think about eco-friendly construction. Stick around as we dive into the details, and who knows? You might just rethink your next home improvement project.
- Cavipor® clay foam, the mineral insulation material, has now earned approval for use in floor slabs and roofs, particularly as a filler between rafters.
- Get ready to explore this innovation firsthand at the 'Klimafestival für die Bauwende' event on November 19 and 20 in Berlin.
Ludwigshafen, November 4, 2025 – BASF is revolutionizing the insulation scene with Cavipor®, introducing clay foam as a fresh and inventive category of building materials. This mineral-driven insulation solution was crafted specifically to boost energy efficiency in retrofitting older structures featuring double-wall masonry. Lately, it's gained the green light for insulating floors and roofs by filling the spaces between rafters, making it versatile enough to handle thermal protection all around a building's exterior.
"By bringing clay foam into the insulation arena, we're raising the bar for energy-saving renovation options," explained Dr. Ramkumar Dhruva, President of BASF’s Monomers division. "Cavipor stands out as a one-of-a-kind substance offering meaningful, long-lasting advantages to the insulation sector. It highlights BASF's dedication to aiding the eco-friendly shift in the industries we partner with."
BASF collaborates with a team of distributors across Europe, who make sure the clay foam is handled correctly by skilled applicators.
"Through our tight-knit partnerships with distributors in Germany, the Netherlands, Ireland, and the UK, approximately 2,000 homes have been upgraded with Cavipor insulation so far, and its reputation as a cutting-edge alternative is spreading throughout Europe," noted Dr. Frank Reuter, Business Manager for Cavipor at BASF. "Cavipor can greatly enhance a structure's energy performance, help cut down on CO2 emissions, and foster a more comfortable indoor space."
Cavipor is straightforward to ship and apply, without generating dust or fibers—a real plus for workers and the environment. The foam consists of three water-based ingredients that get blended with air on-site, expanding their volume by a factor of 10. It's then injected into hollow spaces through tiny drilled openings. Its liquid-like flow ensures cavities are filled uniformly. With its distinctive traits, clay foam resists flames and repels water while allowing vapor to pass through, letting buildings endure weather challenges while staying breathable. Its excellent insulation qualities place it in the elite thermal conductivity class of 035, and it adheres to top-tier emission guidelines, earning the prestigious EMICODE® EC1PLUS certification. When a building undergoes renovation or demolition, Cavipor can be recycled or discarded as a standard building material per local rules, no tricky separation required.
To give you a clearer picture, think about an old Victorian house with drafty walls and high heating bills. By filling those double-wall cavities with Cavipor, homeowners could slash energy costs while keeping the property's historic charm intact—without resorting to bulky, less eco-friendly alternatives. It's a win for sustainability enthusiasts who want to preserve architecture without compromising on green standards.
BASF will showcase Cavipor and the novel clay foam material group at the 'Klimafestival für die Bauwende' in Berlin from November 19 to 20, 2025.
For deeper insights into Cavipor, head over to www.cavipor.com.
Learn more about the clay foam material category at www.clay-foam.com.
About BASF
At BASF, we're all about crafting chemistry that paves the way for a sustainable tomorrow. Our goal? To become the go-to chemical firm empowering our clients' green journeys. We blend profitability with ecological care and social accountability. Our team of about 112,000 BASF Group members drives success for customers in virtually every industry and nation worldwide. Our lineup includes core segments like Chemicals, Materials, Industrial Solutions, and Nutrition & Care, plus standalone ventures in Surface Technologies and Agricultural Solutions. In 2024, BASF racked up sales of €65.3 billion. BASF stock trades on the Frankfurt exchange (BAS) and as American Depositary Receipts (BASFY) in the U.S. Find out more at www.basf.com.
But wait—here's a point that might stir some debate. Is clay foam really the game-changer BASF claims, or could traditional materials like fiberglass or cellulose still hold their ground in certain scenarios? For instance, while Cavipor's vapor-permeability sounds ideal for breathable buildings, some experts argue it might not suit ultra-modern, sealed structures. And this is the part most people miss: its recyclability is a huge plus, but what about the energy used in production? Does it truly offset the benefits, or is this just another greenwashing tactic in an industry hungry for eco-credentials? We'd love to hear your take—do you think innovations like Cavipor will accelerate the shift to sustainable building, or are there hidden drawbacks we're overlooking? Share your thoughts in the comments below; let's spark a conversation on the future of insulation!
