TEKDEK is a trapezoidal profile manufactured from high tensile Aluminium-Zinc coated steel sheets, used in roofing and cladding applications especially in industrial applications. It is an angular profile with robust design and great aesthetic looks making it a modern alternative to the traditional corrugated metal roofing sheets.
Recommended minimum timber cross-sectional size are :
Purlins – 75 X 50mm, Trusses – 100 X 50mm.
Maximum Purlin Spacing
0.30mm thickness material :- 800mm.
0.40mm thickness and above :- 900mm to 1mtr.
Note :-Note:-It is recommended to use single lengths to cover each run of roof from crest to eave and avoid end lapping for better aesthetics and economy.
When using TEKDEK sheeting the recommended minimum pitch for roof sheets in excess of 15m is 7.5 Degrees and for sheets less than 15m is 5 Degrees.
70mm self-drilling timber screws or twisted shank roofing nails are to be fixed through the crest of the profile ribs using an electric screw guns (drill) or by hammering through pre-drilled holes. 65mm self-drilling screws to be used on steel purlins. Either fastener must be used in conjunction with appropriate uPVC washers.
Note:- Tekdek are fixed by drilling fasteners through its crest its recommended to use minimum 3 fasteners across each width of the profile (both ends at the overlap and center).