Nu-Lok Roofing Systems > Commercial Roof Projects > Technical Details

Technical Details of Nu-Loks' Unique Roofing System

Slate, being a natural product, will vary in thickness, colour and strength. Slate has very low porosity (approx. 0.4%). A clay tile has a porosity of 2-10% and concrete 3-20%. Low porosity is a feature that equates with a long lifespan. In very cold climates the freeze/thaw cycle will damage the roofing tiles even more rapidly.*

Nu-Lok™ Natural Slate range

Nu-Lok Welsh Slate	Bethesda, North Wales Heather colour Fine upper surface texture and a distinctive dressed edge 400 x 300 x 8mm thick
Nu-Lok Spanish Slate	Carballeda de Valdeorras, Ourense, North West Spain Blue-grey colour Hard coarse textured upper surface with a dressed edge offering a rustic natural appearance 400 x 300 x 6mm thick
Nu-Lok Brazilian Slate	Felix Landria, Brazil Grey-green mottled colour Exceptionally flat and consistent, it has a smooth upper surface. Hard and brittle stone with possible colour range 400 x 400 x 6mm thick

Nu-Lok™ Roofing System Technical Date and Certifications

The Nu-Lok Roofing System offers a straightforward, efficient method of installing both Natural Slate and Nu-Lok™ Ceramic Tiles. This incredibly robust system incorporates Zincalume Battens spaced at 307mm. Locked in place between the battens are Nu-Lok Link Channels, each possessing a stainless steel clip used for securing the leading edge of each slate. This Link Channel eliminates the need for side double-lapping of slates because water passing through the slate is routed by the Link Channel onto the surface of the slate below.

The illustration shows a roof with slates removed, thus exposing the Nu-Lok System underneath. Notice how the missing slates will build up to complete the roof and how the stainless steel clip will secure the leading edge of the slates.

You may be surprised at how affordable a high quality Nu-Lok roof is...

Phone (02) 9482 ....(02) 9482 3853 or CLICK HERE to send us an online enquiry

Tests Performed on Nu-Lok Ceramic Slate Tiles

Tests performed by CREAM Building Technology Laboratory (UK)

BS EN 538 1994 - Flexural Strength Test
BS EN 539 1994 - Physical Characteristic Impermeability Test
BS EN 539/2 1998 - Frost Resistance Test
BS EN 1024 1997 Geometric Test
BS EN 1304 1998 Product Definition and Specification Test

Test performed by Turin Polytechnic (Italy) Dept of Geological Resources and Territory

Water Absorption
Resistance to indirect traction by means of bending
Resistance to indirect traction by means of bending after freezing
Resistance to alterations caused by weather

External Fire Exposure

BS 476: Part 3 1958

Simulated Static and Cyclic Wind Uplift Test

Passed Wind Classification upto and including C2 (cyclonic wind test).

Test performed on Nu-Lok Fixing System

AS 2050 1989 Weather Effectiveness of Roofing System Structural

Upwards to ultimate
Upwards to serviceability
Downwards to ultimate
Downwards to serviceability

Florida Building Code Test Protocol TAS100-95 – test procedure for wind and wind driven rain resistance of discontinuous roof systems.

Based on overlap of 100mm	400 x 400mm Slate	400 x 300mm Slate	400 x 250mm Slate
Slates per m2	8.33	11.1	13.3
No. of Link Channels per m2	8.5	11.5	13.5
Slate/Tile Clips	8.5	11.5	13.5
Battern Centres	307 ± 7mm	307 ± 7mm	307 ± 7mm

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Phone (02) 9482 ....(02) 9482 3853 or CLICK HERE to send us an online enquiry