You will want to create a new line type that you can use with your roofs.
It will need shorter lines and wider gaps so that when they overlap the lines fill the gaps.
But the gaps can't be too wide or you will have problems in the corners where you won't see any lines.
You will never get a perfect balance.
Maybe Graphisoft should make the line gaps use a white pen instead of being transparent.
That way the line on top would mask the line below instead of allowing it to show through and filling in the gaps.
Barry.
One of the forum moderators.
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