Dry Ridge Ridge batten

[Craig peterson]

Hi all,
I'm after a little advice about what a roofer has done on my roof.
He was called in to cut back the breathable membrane either side of my tiled roof, so as to let the dry ridge do its job and breath when roof was replaced the roofer years ago just wrapped breathable membrane over apex.

This roofer originally replaced the ridge batten by nailing it to top of roof trusses, so I called him back and told him to re do the hob, but this time fit ridge batten onto the proper brackets. Now he has done that I can now see the dimensions of the ridge batten from inside the loft.
Ridge batten is 18mm x 38mm but the instructions for dry ridge system say ridge batten should be 25mm x 50mm

Whats the most often used size in the real world please.

Cheers
Craig

 

[^woody^]

The whole point of the batten is to screw the tile joint clips into to hold the ridge tiles down, and 19mm seems a bit thin. The actual depth and thickness of the batten is specified by the system manufacturer and can depend on the type of ridge tile.

 

[datarebal]

19x38 is too thin .. ridge and tile type and roof pitch govern what thickness you need. it could be 75 x 50 even