Nationwide Liquid Screed Service
0800 0599 556 /
0737 7702 844
A: Gyvlon® Screed (trademark) is the trade name for the screed range of ANHYDRITEC®. Gyvlon® Screed has been established and recognised in the UK for over 25 years.
A: Fully Bonded 25mm, mechanical contact with substrate/unbonded 30mm. Over insulation/acoustic matting 35mm domestic and 40mm commercial. Covering over top of the pipes with Gyvlon® Screed Thermio®+
A: Our standard solution, ECO®, requires a minimum of 25mm (by British Standard). BBA Approved Thermio®+ Technology can be installed with just 20mm coverage.
A: The screed can be walked on 24 to 48 hours after the installation, dependant on site conditions.
A: Yes. As per British standard surface laitance should be removed after 7-10 days to help the screed dry out. If Low Laitance additive is used then sanding to create a mechanical key is all that is required prior to floor coverings being applied.
A: In good drying conditions 20deg 60%RH Gyvlon® Screed products dry at the same rate as traditional sand and cement screed approx. 1mm/day up to 40mm of thickness. This increases for screeds thicker than 40mm and in poor drying conditions. When the screed is dry then you can tile. If underfloor heating is installed, it is recommended that the heating system is commissioned before installing surface finishes. It is important to have all the moisture out of the screed as the tiles may not bond with the adhesive.
A: Yes if installing impermeable surface finishes, such as tiles. All pipes should be pressure tested before installing screed.
A: Yes, if any adhesive is used for your selected choice of flooring, it is recommended to use an epoxy primer to create a barrier between any cement based adhesive and the gypsum based screed. Before this is applied it is vital that the floor is lightly sanded or scraped to key in the primer. We would recommend the use of Gypsum Tile Adhesives which are directly compatible and can be laid at 85% RH rather than 75% required for cement based adhesives.
A: Yes. Thermio®+ is specifically designed to compliment these systems by running at lower water temperatures. A good heating system will ensure the property runs effectively and is environmentally efficient.
A: Yes. Please refer to your local Technical Specification Manager (details on our contact us page) who will assist.