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For roofs with continuous sheets and no end laps the minimum roof pitch is 1° (1 to 60). To prevent ponding METLOK® 500 sheets need to be adhered to the roof. For roofs with end laps the minimum lap is 200mm for pitches between 5° and 15° and 150mm for above 15°. For walls allow maximum end laps of 100mm.
The sealant should be in two runs; one at the low end of the lap to prevent moisture being drawn in by capillary action. The other should be at the high end of the lap to prevent condensation that may form under the top sheet, from draining down the underside and entering the lap. Sheets should be laid in the opposite direction to the prevailing weather.
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