Roof sarking peeling off?

A homeowner asked “is this roof sarking peeling off?”

I’ve installed a lot of sarking!

You need to apply the special shiny silver insulation tape that is sold especially for taping reflective foil laminate (sarking).

It is really sticky and most importantly reflective, long-lasting and it maintains the integrity of your sarking layer.

Here is a photo of the tape we use. It won’t break down or delaminate, it sticks to wet surfaces, is stickier than cloth duct tape, and withstands a large range of temperatures from -30% to 100%.

Is it just a matter of taping the edges? Do I need to put anything on the inner part too to stick them up?

You just smooth the bottom layer over the top layer and run the tape longways along the edge of the overlap so it goes half on each side.

You could hold it in place with a couple of little sections of tape, but replace them when you get to that bit with the tape roll.

Once the edges are taped and securely in place you could run another line of tape to offset each side to widen the taped join if you like.

Bare hands are best as the tape sticks very strongly to silicone gloves!


What might be the reason that this happens to sarking?

It looks like it wasn’t taped in the first place. It’s probably more important on a metal roof as the taping ensures the condensation doesn’t drip on the ceiling. But has benefits for tiled roofs too, eg. drafts and radiant heat.

Sarking is now mandatory in building. Installation of sarking has been a standard practise since 1996.

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