3d modelling a cadimage roof

[Anonymous]

I have drawn a roof using the roof tool in archicad and then used the roof covering from cadimage to create the roof and down pipes etc... when i drew a standard corrugated roof. the elevations showed the roof as normal corrugated vertical hatching but when i change the colour of the roof to model it the lines on the hatching change. how to i change the colour of the roof without changing the hatching of the roof on the elevations?
the picture attached shows the changed hatch lines

[Anonymous]

this is what they were before

[Anonymous]

Have you changed to a surface (material) which has a fill pattern assigned to it?

[Anonymous]

Ive made a copy of an existing surface and only changed the colour. The attachment is a copy of corrugated sheet matte

[Anonymous]

Change the Corrugated vectorial hatching to Empty Fill. It is this fill that is is adding the extra lines. Not necessary when the corrugations are modelled.

[Anonymous]

Thankyou that worked