How to install dektites on roofs correctly part 2

In part 2 of our two part video, we explore the pitfalls of installing dektites on low pitched metal roofs.
Large dektites blocking the flow of water, pushing water under the overlap, and other issues.
Very often, the dektite is not sealed to the correct surface and water gets underneath.
We have seen roofs where 3 separate dektites (one over the former ones) to try to stop a slow leak. None seem to realise that sealing the base of the dektite to the overlap does NOT work...

[@mmroofs]

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