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Wall to roof join - structure penetrating insulation

Ksenia.Eic
Contributor

Wall to roof join - structure penetrating insulation

Ksenia.Eic
Contributor
Contributor

I have had this issue for years and am so annoyed that I haven't found an answer! How can you tell Revit that the roof structure should not penetrate the wall insulation? I have outsulation with structure on the interior. Seems simple enough but the only way I have found around this is to make a separate roof assembly of just the insulation and then another assembly of just the structure... but then you run into problems of them not aligning if you have an offcentre gabled roof. 

 

How do I solve this without creating separate assemblies for structure and insulation??

 

Thank you!

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barthbradley
Consultant
Consultant

@Ksenia.Eic wrote:

 

How do I solve this without creating separate assemblies for structure and insulation??

 


 

What's wrong with separate assemblies?  It's a valid approach. 

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Ksenia.Eic
Contributor
Contributor

As I mentioned in my original message, it is problematic splitting the assembly of a roof when you have an asymmetric gabled roof.... what happens is the roof ridge (top of the assembly) is slightly offset from the "ridge" at the u/s of the assembly so when you split the structure to be separate they do not match up. In other words you end up with a gap between the structure and the insulation part of the roof assembly - see attached.

It seems crazy that there is no way to adjust how the materials in the assemblies join when the "join" tool exists and works for 90% of the assembly (joining materials correctly) but then has this huge, glaring error. When it is a single sloped roof or a flat roof, yes I can split the assembly to have the structure separate.... but, as I showed, this doesn't work once the roof starts to get a bit more complex and I hate having to do the "cut profile" work around constantly (it's fine if it's a small adjustment that you only see when you're drawing a detail but when it must be done for every building, wall and detail section, and then has to be adjusted every time I make a revision to the roof or wall, it starts to become a real pain... and something I have to manually adjust each time).

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barthbradley
Consultant
Consultant
Accepted solution

Have you tried Roof by Extrusion by Picking a Model Line that is Offset from the Roof a distance equal to the Thickness of the Roofing Material being applied to the asymmetrical Gable Roof? 

 

AsRo.jpg  

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Ksenia.Eic
Contributor
Contributor

Aha that does work!

So the answer is you have to split an assembly into structure vs rest of envelope? no way to adjust how materials join otherwise?

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