Roll out vent trays, which brand?

[epsilonGreedy]

I need to order some of that flimsy corrugated plastic roll which creates ventilation channels between the fascia and up over the top of the attic insulation. There seems little to distinguish between the offerings from different brands e.g. Manthorpe, Klobber or Glidevale. I have a minor concern that the upper edge of the plastic roll might abrade against the felt membrane above it and possibly saw through the felt over the years.

 

Does anyone have a favourite? I am guessing many on the forum did not need to fit this type of ventilation in their warm roof spaces.

 

https://www.roofingsuperstore.co.uk/browse/ventilation/roll-out-panels.html

 

p.s. My first roof project is a small trial, 4.25m x 3.3m in plan, two hips and a 30 degree pitch which suggests I need a wide version of such a roll to reach over the top of the attic insulation.

 

In case anyone is confused by my post here is a video installtion guide by Redland:

 

 

[Oz07]

Cheapest in local stock. Never even looked at brand myself 

[Russell griffiths]

There all shit and look like they are made from the cheapest nastiest plastic you can imagine. 

Buy the first ones you come to. 

They are there purely to make a gap, they will not rub a hole in your membrane as they don’t move, nor should your membrane, the air movement is a tiny whiff of a breeze not a howling gale. 

 

Buy them nail them on, next job. 

[epsilonGreedy]

Thanks both, another item knocked of the roofing prep list.