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Polycarbonate Screw and Dome Seal 12 X 50 Timber Fix - T17

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This Item can be shipped via standard or express postage, or added to your roofing order.
$17.99 Standard or $25.99 Express shipping applies if all items in your order meet this criteria.

Assembled 12g x 50mm screws and 26mm grey dome seal.

For use with polycarbonate sheeting with Sharp T17 for self-drilling in timber

To use: pre-dill a hole into the polycarbonate sheeting - 10mm for sheets up to 2.4m and a 12mm hole for 2.4m and above.

Then using a 5/16” hex socket, install the screw slowly at 1,000RPM.

Add to your roofing order or available for postage.

Polycarbonate Screw & Dome Seal 12g x 50mm. For fixing into timber.

For use with polycarbonate sheeting.

When fixing polycarbonate sheets to the batterns or purlins, allowance has to be made when drilling screw holes so that the sheet can move freely as it expands and contracts. Screw holes must have a minimum diameter of 10mm for sheet lengths up to 4.2m. Lengths over 4.2m and up to 8.1m require 12mm diameter holes. To fix corrugated and greca profiles use 50mm x 12g screws. The 5-Rib profile requires 65mm x 12g screws. All screws must be fitted with 26mm grey domed weatherproof seals. Please avoid over tightening!

An alternate method of fixing which also speeds up installation, is to use our Clearfix self drilling combination drill/cutter and weatherproof seal screw. These fasteners self drill the sheet and create the correct clearance hole in one operation. A very easy, effective, method.

Related Products

Polycarbonate Corrugated Roofing Sheet Level 1

Polycarbonate Trimdek Roofing Sheet (5 Rib)

Polycarbonate Greca Roofing Sheets Level 1

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