Multi-Purpose Bonding Primer | High Adhesion Surface Treatment Agent for Concrete, Mortar and Tiles

 LG660 gets your project moving faster. It dries in just 15–30 minutes, so you can apply the primer and move straight to self-leveling or mortar work the same day — no overnight waiting, no wasted time. And since it's ready to use right out of the bucket with no mixing required, you save setup time and eliminate mixing errors. With 6 m² per liter coverage, one 20L bucket covers up to 120 m² — excellent value that keeps your material costs low. Faster drying, easier application, and better coverage mean every job finishes sooner.

LG660 is the critical foundation that ensures your flooring system performs for years. By creating a powerful adhesive bridge between the substrate and overlay, it dramatically reduces the risk of delamination, blistering, and bond failure — the most common causes of self-leveling floor problems. It works with the full LANGUAN product line: self-leveling compounds, tile adhesives, plastering mortars, anti-crack mortars, repair mortars, and waterproofing membranes. Compatible with all absorbent surfaces including concrete, cement screeds, plasterboard, fiber cement boards, AAC blocks, and clay bricks — one primer for every substrate.

LG660 works everywhere — indoors and outdoors, on walls and floors. One product handles all your priming needs across the entire project, simplifying inventory and training. Its water-based formula is non-toxic with low odor, making it safe for occupied buildings and enclosed spaces, and tools clean up easily with just water. For highly porous surfaces like autoclaved aerated concrete, simply apply a second coat — no special product needed. Backed by German technology and ISO 9001 certified quality, LG660 delivers consistent, reliable bonding performance you can count on, job after job.