Collaborate forum
Showing results for 
Search instead for 
Did you mean: 

bug in roof surfacer

this is an old bug that just got repaired in version 16 but
has returned in version 17
ArchiCAD 4.5 --- 25 , Win 10 , dual monitors, 64 gb ram,Nvidia GeforceRTX 2080 TI, I-9

Not applicable
I'm getting the same anomaly, I guess it is a bug. The align with roof pitch setting has no effect.

Not applicable
This story never finishes.

For history, the culprit is poly2_b{2} command, which was broken in 16.
The failure of the roof accessory in 2D was a consequence of this bug.
The bug was noticed in July 2012, and fixed with hotfix 4 (3827), one year later.

In AC 16 (3827), poly2_b{2} command is repaired
Opening Roof Surfacer 16 (3827), you will see at line 46 (2D Script).
In AC 17, poly2_b{2} command is repaired… and Roof Surfacer 17 is broken again.
The previous line of code is missing.

As a temporary workaround, add this line at the begining of the 2D Script
Do a copy not to modify the original library. Wait for the next Library Hotfix.
Keep cool.

Laszlo Nagy
Community Admin
Community Admin
I will report this to Graphisoft.
Laszlo Nagy, Lead Moderator, Community Admin
Get Archicad Tips at
AMD Ryzen 1700X CPU, 48 GB RAM, Nvidia GTX 1060 6GB, 500 GB NVMe SSD
2x28" (2560x1440), WIN10 PRO ENG, AC20-AC25
Loving Archicad since 1995

Barry Kelly
It's not just the roof surfacer object that is wonky.
Even just the materials with vectorial hatching on a multi-plane roof is wrong.
Single roof planes are fine.

One of the forum moderators.
Versions 6.5 to 25
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision 3510 - i7 6820HQ @ 2.70GHz, 16GB RAM, AMD FirePro W5130M, Windows 10

Stress Co_
5 Hotfixes later….. and still not corrected.

Does this disclaimer mean it won't be fixed?
(from the "About "Roof/Slab/Wall Accessories" Add-On")
Screen Shot 2014-02-12 at 10.41.03 PM.png
Marc Corney, Architect

Red Canoe Architecture, P. A.

Mac OS 10.15.7 (Catalina)

Processor: 3.6 GHz 8-Core Intel Core i9

Memory: 48 GB 2667 MHz DDR4

Graphics: Radeon Pro 580X 8GB

ArchiCAD 24 (5000 USA Full)
ArchiCAD 25 (4013 USA Full)

Still looking?

Browse more topics

Back to forum

See latest solutions

Accepted solutions

Start a new discussion!