Full Product Manual
ROCKWOOL
17
Fastening Patterns for Plain
Board Insulation
The dimension of the insulation boards dictates the minimum number of attachments required and their fastening
pattern. This section provides examples for insulation boards up to 48” in length installed over a solid wall and a
wood/metal stud wall. For more information refer to ROCKWOOL’s Board Insulation Attachment Guide.
Strapping fastening patterns for ROCKWOOL rigid board insulation should be specied based on the backup
assembly and project specic loads (weight of cladding). Long screw fasteners must penetrate framing members like
studs and this effects the potential horizontal spacing of the fasteners and strapping. For additional guidance on the
installation and information on the performance of ROCKWOOL rigid board insulation with strapping, please refer to
Comfortboard
®
80 Installation Guide and Performance of Strapping Attachment on Walls with Long Screws Through
ROCKWOOL Rigid Insulation.
Disclaimer and Limitation of Liability
Fastening connections should be designed to withstand all the combined applied loads, including but not limited
to dead-load and wind-load. Where applicable, consideration should be given to seismic-load, and live-load (not
covered in this guide).
Failure to include safety factors or adequately design for applied loads can result in failure of mechanical attachment.
The determination of the specic design requirements and safety factors regarding a fastener system is the sole
responsibility of the installer and/or end user. ROCKWOOL Inc assumes no responsibility whatsoever for any failure of
insulation attachment or related fastening systems.
The statements and data contained in this document are for general information purposes ONLY. They are NOT
specic technical recommendations as to any particular design or application and the ultimate determination as to
product suitability is the sole responsibility of the installer or end user. Although the information contained herein,
including ROCKWOOL product descriptions, is believed to be correct at the time of publication, accuracy cannot be
guaranteed and results may vary depending on the particular design and/or application.
ROCKWOOL fully reserves the right to make product specication changes, without notice or obligation, and to
modify or discontinue any of its products at any time. In no event, shall ROCKWOOL be liable for any direct, indirect,
or consequential damages of any kind arising from information contained in this bulletin, including, but not limited
to, claims for loss of prots, business interruption, or damages to business reputation. This limitation of liability shall
apply to all claims whether those claims are based in contract, tort, or any legal cause of action.
When penetrating or adhering to a water-resistive barrier (WRB), ROCKWOOL recommends referring to the
attachment and membrane manufacturers to secure additional direction on installation method and material
compatibility.
As ROCKWOOL does not supply fasteners or adhesives, it is the responsibility of the manufacturers of the fastenings
or adhesives to comment on the performance of their products when managing the loads of ROCKWOOL insulation
materials and other assembly components. ROCKWOOL makes no representations or warranties, express or implied,
with respect to its recommendations for attaching the semirigid and rigid board products with fastenings and all
warranties are disclaimed.
Fastening Patterns for Plain
Board Insulation