JNL J-FRAME SPECIFICATION  Juken image

30 June 2017

This is an update to Masterspec's first notification dated 22 June 2017 to include the MBIE revised BC Update No 217.

Masterspec has been monitoring recent events regarding Juken New Zealand Ltd (JNL) J-Frame and if this would have any affects on the Masterspec specification section 3813J  JNL J-FRAME - LVL STRUCTURAL FRAMING.  Accordingly, it is more than likely business as usual for those of you that are using or thinking of using the JNL J-Frame specification section.

If you have been following the recent media coverage involving J-Frame you might be confused by some of the statements.  However MBIE have recently released their revised BC Update No 217 dated 28 June 2017 which clarifies the situation.  The core of it states:

  • "J‐Frame has a BRANZ appraisal and a CodeMark certificate. These are unaffected by the Commerce Commission's compliance advice letter. This means that J‐Frame is certified for use where the H1.2 hazard class applies. If J‐Frame is specified in plans for a use in situations where the H1.2 hazard class applies then a Building Consent Authority is obliged to accept this, on the basis of the CodeMark certificate."

As we originally confirmed, the existing Masterspec section 3813J  JNL J-FRAME - LVL STRUCTURAL FRAMING is based on the same principles and references the following:

  • J-Frame LVL is an alternative to solid timber framing, and is compliant through the CodeMark Certificate AQ-180615-CMNZ (Rev. 2 - Feb 16).  The Certificate allows for situations where H1.2 hazard class applies.
  • The use of H3 treatment is determined through the MBIE Determination 2015/079, again not directly through an Acceptable Solution or Verification Method.

So 3813J  JNL J-FRAME - LVL STRUCTURAL FRAMING is still suitable for use under the same principles it always was.  If you are unsure about the level of treatment to use, the section allows the choice of H1.2 or H3 treatment situations.

For more background, read an in depth statement from Juken New Zealand Ltd here.

If you do have any further concerns, please contact Gordon Wilmshurst, JNL Sales & Marketing Manager, M: 021 865386, Email: gordon.wilmshurst@jnl.co.nz.

Masterspec has modified the 3813J  JNL J-FRAME - LVL STRUCTURAL FRAMING section, but only to further clarify what treatment situations apply and for a small change in lintel lengths that are available.  The section 3813J is available in Standard, Basic, Interiors and now Structural & Civil.

Masterspec will continue to monitor the situation and endeavour to keep you informed of any substantial future developments.

LINKS

MBIE BC Update 217

https://www.building.govt.nz/about-building-performance/news-and-updates/all-news-and-updates/bc-update-217/

JNL web site:

www.jnl.co.nz

CodeMark Certificate AQ-180615-CMNZ

https://www.building.govt.nz/assets/Uploads/building-code-compliance/certifications-programmes/product-certification-scheme/product-certificate-register/j-frame-j-lintels-product-certificate-r2.pdf

MBIE Determination 2015/079:

https://www.building.govt.nz/resolving-problems/resolution-options/determinations/determinations-issued/determination-2015-079/

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