And the Winner of this Re-Roof...Weldable Ribs


An old zinc tray roof system failed to keep this beautiful Queenstown home dry and warm, but instead of re-roofing with the same product, the architect chose to look elsewhere. It was important to the homeowner and architect that the replacement product was able to maintain the aesthetic of the zinc standing seam, but also provide the home with an extremely robust waterproofing finish.


After discussions with all stakeholders involved, the decision was made to remove the zinc tray roof and overlay the existing plywood substrate with Viking’s WarmRoof system; to add thermal resistance, and Viking Enviroclad as the waterproofing membrane. In order to emulate the zinc tray look, Viking’s TPO weldable ribs were heat welded in equi-distant rows on top of the Enviroclad membrane; replicating the standing seam profile. With the property being in Climate zone 3, a vapour barrier had to be installed on-top of the plywood substrate.

Being 30 meters in length, full 30.4m rolls of Enviroclad proved the perfect length; resulting in no end-laps. It was then finished off with the welding of the TPO ribs.

Thumb Weldable Ribs Compressed


Although the Viking Approved Applicator faced some very unpredictable weather challenges, the finish is exceptionally clean and has been done to the highest of standards. The homeowners and architect are extremely happy with the new roof, and even happier that it was completed at half the cost of a new standing seam zinc roof.

RJJ Viking Aerial 180418 042