Longcliffe Quarries launches Longfloor liquid cement screed

The system has advantages over both traditional screeds and anhydrite/gypsum flowing screeds. It can be laid at ten times the speed of traditional screeds, manual handling is avoided, and a denser, more even surface, as well as a creamy smooth finish, is achieved. As a result of a unique manufacturing process, Longfloor has a certified 95% recycled content.

The product dries three times faster than anhydrite/gypsum-based flowing screeds. There is no laitance to sand off. Contamination and blistering issues with wet concrete on cement-based floor adhesives are totally avoided.

Not susceptible to cracking, crazing, or curling, the product can be laid in wet areas. It can be used in both domestic and commercial applications, and it provides good thermal conductivity over underfloor heating. With application down to 25 mmm thinkness in bays of 150 m², a single crew can lay 1000 m² in a day.

Consisting of superfine, high-purity limestone powder, alongside a suite of dry chemical reagents and admixtures that are manufactured to BSEN 13813:2002, the product is made in a new state-of-the-art quarry. The Longcliffe quarry is located near Matlock. After this, the product is delivered by tanker to a stockist’s silo, where sand, cement, water, and a liquid admixture are added.

Stockists are typically ready-mixed concrete plants, mixer, or dry leg. The product can be delivered to the customer from drum mix or volumetric trucks. The screed can be discharged, or is more usually pumped into the building, then dappled, before Longcure is applied. Longcure is a sprayed proprietary curing agent.

“We are very excited about this pioneering, easy-to-use screed product,” said Andy Littler. “For many years the concrete industry has tried to develop a cement-based liquid screed that flows well, dries quickly, and is not prone to cracking. We have now achieved this. The screed industry is witnessing a sea change in favour of cement-based liquid screeds and we intend to make Longfloor the market leader and top performing benchmark standard.”

Longfloor screed is currently available to screed contractors in the Northwest, Midlands, Southeast, London, Southwest, Humberside, and Scotland. In these areas, Longfloor screed is being supplied on a daily basis, with contracts secured of up to 600 m³.

Longcliffe Quarries is the UK’s largest independent producer of calcium carbonate, limestone, and powders.

Read the article online at: https://www.worldcement.com/product-news/08012019/longcliffe-quarries-launches-longfloor-liquid-cement-screed/