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first post.
new extension.i am fitting valley boards one side of valley roof is warm ie with counter battens so valley board can be fitted on top of rafters and tile battens sail over o.k.. other roof is standard so do i need to recess valley boards or can i use 6mm on top of rafters. also will it matter that the 2 sides of valley are 25 mm diff heights. this is a lead valley.
if you think i got it completely wrong please help . thanks in advance.paul.
new extension.i am fitting valley boards one side of valley roof is warm ie with counter battens so valley board can be fitted on top of rafters and tile battens sail over o.k.. other roof is standard so do i need to recess valley boards or can i use 6mm on top of rafters. also will it matter that the 2 sides of valley are 25 mm diff heights. this is a lead valley.
if you think i got it completely wrong please help . thanks in advance.paul.