Gyvlon SteelDeck/Lewis Dovetail Sheet

Lewis® Dovetailed Sheeting is used to create high performance, structural, light-weight Steel and Gyvlon composite floors to provide an acoustic, under-floor heating, stiff, load bearing and fire resistant solution.


Widely used in new build and renovation projects and ideal for all sizes from multi story apartment buildings to self-build Extensions.

Gyvlon SteelDeck screed is a blend of Gyvlon Binder, selected aggregates and clean potable water, to produce a pumpable self smoothing, flowing screed (manufactured to BSEN 13813:2002 and to the specific requirements of Lewis Deck dovetail sheeting).

USES
Gyvlon Steeldeck screed is designed specifically to be used with the Lewis Deck dovetail sheeting, for use with either Timber, metal web or steel joists in masonry, timber or light weight steel structures. To form either ground, separating or mezzanine floor constructions
For advice on specifications and proprietary systems please contact the Gyvlon Technical and Specification team

SYSTEM SPECIFIC FEATURES
• Increased productivity compared to floating floor treatments
• Improved loading compared to floating floor treatments
• Can easily accommodate UFH within the screed zone
• Ideal for use with UFH
• No need for loading out prior to flooring
• Easily achieves SR2 as described in BS8204:7
• Protein Free – cannot harbour bacteria
• Minimum thermal expansion (0.012mm/mK)
• Dries at a rate of 1mm per day up to 40mm in good conditions
• Excellent UFH performance compared to floating floors
• Environmentally friendly

TECHNICAL DATA
Appearance/Colour: Off-white fluid mortar
Water demand: 13-18 % b.w
pH: > 10
Wet Density: 2200 kg/m3
Dry Density: 2000 kg/m3

Typical Screed Properties:
Compressive Strength: C25 N/mm2
Flexural Strength: F4 N/mm2

MINIMUM APPLICATION THICKNESS
Application thickness of Gyvlon Steeldeck over Lewis Deck varies between 36mm and 75mm depending on loading, joist spacing and use of UFH. Please consult the Lewis Deck data sheet for confirmation
Typical Thickness : 50mm (Minimum 20mm cover to Heating Pipes)

ENVIRONMENTAL
Gyvlon SteelDeck is produced using Gyvlon binder, which is manufactured from an industry by product.
Gyvlon Binder – 98% Recycled Content
Gyvlon SteelDeck Screed – Average 36% Recycled Content
Recyclability – 100% Recyclable
VOC Content – VOC Free