Taping panel joints?

[junglejim]

Should joints between panels be taped? I’ve read contradicting advice in this. Thinking specifically about the roof at the moment but figure it’s relevant all over?

 Thanks

[Russell griffiths]

Panels of what. 

[Mr Punter]

  On 24/07/2024 at 08:45, Russell griffiths said:

Panels of what. 

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SIPS OSB I assume.

[junglejim]

  On 24/07/2024 at 09:51, Mr Punter said:

 

SIPS OSB I assume.

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Yes correct SIPS OSB panels

[Redbeard]

Is the OSB your air-tightness layer, or is that dealt with by a separate membrane? If the former, yes, tape. If the latter, maybe not. (Unless you are a serious pessimist and decide to do both!)

[junglejim]

  On 24/07/2024 at 09:51, Mr Punter said:

 

SIPS OSB I assume.

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Yes correct SIPS OSB panels

 

  On 24/07/2024 at 12:13, Redbeard said:

Is the OSB your air-tightness layer, or is that dealt with by a separate membrane? If the former, yes, tape. If the latter, maybe not. (Unless you are a serious pessimist and decide to do both!)

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Thanks. Good question. I’ll need to check with the TF company. Presumably internally needs to be taped or sealed in that case and external left untaped?

[Redbeard]

  On 25/07/2024 at 07:33, junglejim said:

Presumably internally needs to be taped or sealed in that case and external left untaped?

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Difficult to answer without knowing the SIPs designer's rationale/strategy, but yes, the bottom one could be the combined a/t and vapour-check plane. Although of course a/t layers can be external...

[markocosic]

I'd do both.

 

Avoids air going through SIP joints if there a compromise in the VCL.

 

It isn't that much tape in the grand scheme of things.