JSC VertiClad - Horizontal Cavity System

New Zealand's First Cedar Shiplap System Tested to NZBC E2/AS1 VM1

JSC VertiClad, offers both wrap and rigid air barrier options along with our proprietary batten profile to complete our system.

JSC Timber led the market developing a fully tested horizontal and vertical cavity system for Western Red Cedar in both Vertical Shiplap and Rusticated Cedar Weatherboards formats.

JSC VertiClad is tested to NZBC E2/AS1 VM1 and has a full Producer Statement-Design from an ACE accredited façade engineer.

Vertical Shiplap Weatherboards offer variety and versatility that complements any architectural style, it adapts equally as well to bold expressive modernism or the well defined criteria of period styling. Available in a wide range of standard and architectural profiles that offer amazing architectural potential. Vertical Shiplap is a look that is currently re-defining the NZ coastal landscape.

Profiles
As per NZS 3617 or Branz Bulletin 411.  Refer JSC Profile Booklet for all available profiles. 

Grades
As per NZS 3631: 1988   PC1 Premium Clears One  PC2 Premium Clears Two

Durability
As per NZS 3602 Class 2 durability for use above ground. In long lengths to profile detailed with species and grading to the requirements of NZS 3602 but with all knots excluded.  To NZS 3602, table 2, Requirements for wood-based building components to achieve a 15-year durability performance.

Finishes
Band Sawn Face (BSF), Dressed Face (DF) or Sanded

Length Spread
2400mm to 5900mm random, selected lengths available on request. No less than 2400mm.

Accessories
J40, J41, J42 Dressed profiles 90X19mm, 69X19mm

Nails - Silicone Bronze or Stainless Steel
Silicone Bronze or Stainless Steel fixings to NZBC E2/AS1 Table 24. JSC Rose Head/Pentagon Head/Flat Head Annular Groove Nails.  Refer to JSC Timber for Manufacturer details/correct sizes, fixing details and available options.

Installation:  Fixing Vertical Shiplap Weatherboards
Adjust horizontal set-out to ensure there is a 2mm expansion gap between successive boards.  Using full length boards only, clench nail tongue to every fixing point (nogs – dwangs at 400 - 480mm centres).  Nail other side of board just clear of lap 30mm–35mm from edge.  Nails to be driven in with an upward slope.  Line nails horizontally across the boards as per JSC fixing details.

JSC DuraCedar
JSC specifically developed the 22mm thick weatherboard and fascia range to increase the durability and stability of Western Red Cedar cladding.  JSC Timber recommends DuraCedar where dark stains are to be used.  Read more about JSC DuraCedar.