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80 mm<br />
The roughly cut roof tiles should overlap into the valley by<br />
minimum 80 mm from the edge of the installed steel valley.<br />
Use a chalk line to mark a straigth line in correct poisiton (80<br />
mm overlap) and cut along the line.<br />
Of optical reasons the tiles may be bent down along the cut<br />
edges.<br />
Cutting of the tiles<br />
The necessary cutting to size should be done "cold" using suitable<br />
hand shears or guillotine shears. Cutting can also be done<br />
by circular saw with a cutting blade specially for this purpose.<br />
Heat-generating cutting with rotating machines faster than<br />
4000 rpm must not be used. Overheating of the metal when<br />
cutting will damage the corrotion protection (zinc) along the<br />
cut edge.<br />
For <strong>Powertekk</strong> Nordic the following tools can be recommended:<br />
Festool TS 55 EBQ oder ATF 55 EB<br />
Panasonic EY 3530<br />
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