Breathable roofing membane

[Tills96]

Hi,

I have recently put proctor roofshield breathable roofing membrane on my 15 degree pitched roof extension. Over the last week with the heavy rain I have noticed water coming through the membrane on to the roof rafters as if where I have nailed the battens to them. The inside of the membrane where the rafters are not touching is bone dry.

Is this a cause for concern or do you think once the tiles are on I shouldn’t worry?

Thanks in advance.

 

[^woody^]

That happens, and being low pitch may be more susceptible when exposed, but won't get anywhere near the amount of driven or standing water.