KLC Generation 2 User manual

VERSION 6 30/09/2020
BEVEL BACK WEATHERBOARD DIRECT FIX INSTALLATION MANUAL
NZ Timber Cladding Systems
CM70062
PROUDLY MADE IN NZ BY
NATURAL. DURABLE. CLASSIC.

2 KLC Generation 2 H3.2 Installation and Technical Guide
Generation 2 bevelback weatherboards
are proudly 100% New Zealand made.
We pride ourselves on delivering a premium
weatherboard to work with and know you are well
protected.
• Treatment warranty of 50 years protection.
• Treated with Koppers MicroPro®Wood Treatment Technology.
• Reduced corrosivity allowing the use of corrosion-resistant fasteners including hot-
dipped galvanised, stainless steel or other approved fasteners to meet building code
requirements
• New Zealand Radiata Pine sourced from renewable plantation forestry. KLC is a Chain
of Custody, FSC®Certified Company.
• Eco-friendly with four environmental credentials.
• Weatherboards up to 6.3 metres in length.
• Formaldehyde-free and low volatile organic compounds used in the treating and gluing
manufacturing process.
• No odour.
• A two coat, superior alkyd (oil based) priming system.
• Approved for aluminium contact.

3 KLC Generation 2 H3.2 Installation and Technical Guide
Table of Contents
DISCLAIMER ................................................................................................. 3
1 GENERAL INFORMATION
1.1 Scope and General Information................................................... 4
1.2 Product Information.................................................................... 4
1.3 Architects/Designers Responsibility ............................................ 6
1.4 Legal Information ....................................................................... 6
1.5 On-Site Storage and Handling - KEEP IT DRY.............................. 7
2LIFE SERVICEABILITY
2.1 Warranty .................................................................................... 8
3GUIDELINES FOR INSTALLATION
3.1 Pre-Installation Checks............................................................. 10
3.2 Framing ................................................................................... 10
3.3 Nail Selection ............................................................................11
3.4 Installation ............................................................................... 12
3.5 Joins and Pipe Penetration ....................................................... 13
3.6 Wall Underlay and Flashing Tapes............................................. 13
3.7 Windows and Door Openings .................................................... 13
3.8 Flashings.................................................................................. 14
3.9 Sealants................................................................................... 14
3.10 Air Seals .................................................................................. 14
3.11 Wall Cladding Cavities .............................................................. 14
3.12 External and Internal Corner Details.......................................... 15
3.13 External and Internal Box Corner Details ................................... 15
3.14 Windows and Doors (Aluminium) .............................................. 16
3.15 Window and Door Sills.............................................................. 16
3.16 Window and Door Heads ........................................................... 16
4FASCIA INSTALLATION ...................................................................... 17
5PAINTING
Top Coat Light Reflectance Values...................................................... 18
Resene Cool Colour Technology ......................................................... 18
6MAINTENANCE.................................................................................. 19
7HEALTH AND SAFETY........................................................................ 20
8DETAILED DRAWINGS........................................................................ 21
DISCLAIMER
The recommendations contained in this document are based on good building practice, but are not an exhaustive statement
of all relevant information. The successful performance of the system relies on many factors outside the control of KLC
Limited, such as the quality of workmanship and design. KLC Limited will not be responsible for the installation of the
products outside of the control of KLC Limited. It is the responsibility of the building designer of the intended project to
ensure that the details and recommendations provided are suitable and that the design is executed appropriately.

4 KLC Generation 2 H3.2 Installation and Technical Guide
1 General Information
1.1 Scope and General Information
The KLC Generation 2 H3.2 range of Bevelback weatherboards, fascia, cavity battens, scriber and finishing boards (D4S)
have been designed as a complete system.
Generation 2 H3.2 Bevelback weatherboards can be used for buildings that fall within the scope of NZS 3604/2012
Timber Framed Buildings and Acceptable Solutions E2/AS1. Buildings that have a weathertightness risk score of more
than 6 as assessed in E2/AS1 section 3 will require a drained and ventilated cavity.
Including:
• NZS 3617: Profiles of Weatherboards, Fascia Boards and Flooring
• NZS 3602:2003 Timber Wood Based Products
• AS/5068 Finger Joints in Structural Products
• AS/5069 Finger Joints in Non-Structural Products
• NZS 1328.1:1998 Glued Laminated Structural Timber
Meets and Exceeds
• NZS 3640:2003 Preservation of timber and wood-based products
The information contained within this guide are based on good building practice and are not a complete statement of all
relevant building practices.
The drawings are as accurate as possible. KLC have specified extra flashing’s in some areas that are over and above the
requirements of NZBC E2/AS1 External Moisture.
1.2 Product Information
KLC Generation 2 H3.2 products are manufactured from short lengths of clear high grade radiata pine that are finger-jointed
together using a structural glue to produce an untreated length of 6.3metres (substrate).
The substrate is then treated to H3.2, using the revolutionary wood treatment technology called MicroPro®(MCA).
MicroPro® (MCA), Micronized Copper Azole (MCA) preservative system protects wood products from insects, termites and
fungal decay and is manufactured by Koppers Performance Chemicals. The preservative contains a mixture of micronised
copper carbonate (copper) and tebuconazole (azole). The MicroPro®treatment system is a water-borne, copper-based
biocide preservative system with four Environmental Certifications.
SCS-EPP-01699a
Scientific Certification Systems
MicroPro®is the first treated wood process to be EPP (Environmentally Preferable Product)
certified by Scientific Certification Systems based on a life cycle assessment. As the leader
in green building product certification since 1990, SCS was the first company to offer
manufacturers a program for verifying the accuracy of environmental claims on products.

5 KLC Generation 2 H3.2 Installation and Technical Guide
1 General Information
Greenguard®Environmental Institute
MicroPro®is environmentally sustainable, this is demonstrated in low leaching of treatment
preservatives from the timber, low volatile organic compound (VOCs) emissions and the award
of the GREENGUARD Children and Schools’ Certification from the Greenguard®Environmental
Global GreenTag International - GreenRate™
MicroPro®Wood Treatment Technology has received a Global GreenTag GreenRate™ Level A
award under Version 4.0 of the Global GreenTag International Product Certification Standard. It
is the highest-level achievement for a product under Global GreenTag’s GreenRate™ product
rating system – declared by the certification body as ‘Fit-for-Purpose’ and confirmed for Green
Building compliance.
Global GreenTag International - Health Declaration
The GreenTag™ Product Health Declaration proves that Koppers MicroPro®Wood Treatment
Technology is safe for human health (and ecosystems) and can be used with absolute peace
of mind in workplace and residential building projects. Reducing risks for Building, Design and
Procurement Professionals whilst supporting the user and occupant’s health and wellbeing
compared to products that don’t.
The blanks are then kiln dried (KD) to a pre-determined moisture content. The KD H3.2 substrate is then profiled to various
Weatherboards, Fascia, Finishing Boards (D4S), box corners and other profiles.
To complement these appearance grade products, a dual coat oil based (alkyd) priming system is applied.
Note: Pre-priming does not waterproof the product and care must be taken to ensure dryness of product before final
painting.
When using pre primed weatherboards and fascia ensure top coat painting occurs soon as possible after installation.
Refer 4.0 Painting page 18
KLC will not “Warranty” any Generation 2 H3.2 product that have not been stored correctly and installed by a professional
Licenced Building Practitioner and as per the NZ Building Code NZS 3604 and painted in accordance with AS/NZS 2311
2017.
KLC Generation 2 exterior cladding systems have been designed for use in residential and small commercial building
applications.
KLC Generation 2 H3.2 exterior cladding systems shall be either direct fixed to framing over a wall underlay or fixed to a
Generation 2 H3.2 cavity batten, this method is described in the Acceptable Solution E2/AS1 paragraph 9.1.8.
Timber weatherboards are included in the Acceptable Solution E2/AS1, section 3.0.
All types of weatherboard profiles may be used in low risk buildings. Only bevel back, rusticated and vertical shiplap
weatherboards should be used in high risk buildings. For information on requirements for rained ventilated cavities refer to
the Acceptable Solution E2/ AS1, paragraph 9.1.8.
KLC Generation 2 H3.2 weatherboards are limited to use in buildings with a risk matrix score of 20 or below as outlined in
E2/AS1 paragraphs 3.4.1 to 3.4.3 (Weather Tightness Matrix)
Weatherboard cladding systems are an acceptable solution under the terms of the New Zealand Building Code E2/AS1.
NZBC E2/AS1 section 1.5 specifies that the design, installation and alteration of cladding is classed as restricted building
work.

6 KLC Generation 2 H3.2 Installation and Technical Guide
1.3 Architects/Designers Responsibility
We have made the drawings as accurate as possible. We have even specified extra flashings in some areas that are over
and above the NZ Building Code E2/AS1 External Moisture.
But it is the Architects/Designers responsibility to confirm the suitability of these details for his/her particular project and
the client.
The Architect/Designer will need to determine the RISK MATRIX that is project specific, that then determines the details
required.
Builders that have questions about these details will need to contact the project specific Architect or Designer.
1.4 Legal Information
KLC Ltd and its Agent AIPdesignNZ Ltd have no reason to believe the information in the details are inaccurate.
KLC Ltd and its Agent AIPdesignNZ Ltd does not warrant the accuracy, adequacy or completeness of such information and
we do not undertake to keep the information in the details updated.
KLC Ltd and its Agent AIPdesignNZ Ltd DOES NOT:
a. Give any assurances that the details and information will be suitable for your purposes and you agree that you will not
rely on the information and you will make your own independent assessments (with the aid of qualified independent
advise).
b. Accept responsibility for any loss, damage (including indirect, special or consequential loss or damage), however
caused (including through negligence) that you may directly or indirectly suffer in connection with your use of or
reliance on the KLC Ltd and AIPdesignNZ Ltd Details. Any condition, warranty, right or liability which would otherwise be
implied is excluded.
1 General Information

7 KLC Generation 2 H3.2 Installation and Technical Guide
1 General Information
1.5 On-Site Storage and Handling – KEEP IT DRY
Correct on-site storage of Generation 2 H3.2 products prior to installation is critical.
Ensure the product is stored on site correctly. Inside, under cover or as per the diagram above if stored outside.
• MUST remain dry at all times prior to installation.
• MUST be stored indoors on a flat surface off the ground, on bearers 150mm above ground, supported every one
metre.
• If stored outside, there MUST be a moisture barrier (ground sheet) under the stack and a secondary waterproof
cover. Allow for a good air circulation.
• Keep out of direct sunlight and protected from both rain and ground moisture uptake.
• Ensure that the framing and cavity battens are dry prior to installation. The underside of the weatherboard is
vulnerable to water ingress. The moisture content must not exceed 15% at time of installation.
Note: Generation 2 H3.2 products are made from kiln dried timber. Timber will absorb moisture in a damp environment and
release it in a dry environment. If Generation 2 H3.2 products do absorb moisture prior to installation, dimensional swelling
may occur, this will disappear when the timber returns to its original moisture content. If the boards have become wet,
check the dimensions of the profile. If the dimensions are larger than the specification leave the boards to dry and regain
correct profile specifications before installation.
Handling
Care should be taken when unloading KLC Generation 2 product. The profiles should be unloaded by hand or with a
Hiab forklift, ensure that there is a minimum of 2 well-spaced load points to avoid excessive bending or flexing during
unloading.
• Do not tip these products from a truck.
• Avoid scratching the face of the board.
• Always carry profiles products on their edge to avoid excessive bending.
• Avoid leaning against any vertical surface to avoid any bending.

8 KLC Generation 2 H3.2 Installation and Technical Guide
2 Life Serviceability
2.1 Warranty
KLC Generation 2 weatherboards have a durability warranty based on the Treatment Manufacturer’s 50-year limited
guarantee.
Under the New Zealand Standards NZS 3602:2003 Timber Wood Based Products, weatherboards and cladding products
must have a minimum durability of 15 years.
The life service is subject to correct installation, paint coating of the product, maintenance and care.
When KLC Generation 2 weatherboards are installed according to the instructions contained in this manual and by a
Licenced Building Practitioner (LBP) or suitably qualified person, the service life can be expected to be considerably longer.
Full details covering all the aspects of pre-installation care, installation, painting and maintenance are contained within this
manual.
Bevelback Weatherboard Measurement Table
Bevel Back Profile Sizes Finish Grade Lap Cover Length Lm/m2
135x18 Finger Jointed 32mm 103mm 6.3m 9.71
135x18 Rebated Finger Jointed 32mm 103mm 6.3m 9.71
142x18 Finger Jointed 32mm 110mm 6.3m 9.09
142x18 Rebated Finger Jointed 32mm 110mm 6.3m 9.09
187x18 Finger Jointed 32mm 155mm 6.3m 6.45
215x18 Finger Jointed 32mm 183mm 6.3m 5.46
230x18 Finger Jointed 32mm 198mm 6.3m 5.05
Full details covering all the aspects of pre-installation care, installation, painting and maintenance are contained within this
manual. Bevelback Weatherboard Measurement Table.

9 KLC Generation 2 H3.2 Installation and Technical Guide
3 Guidelines for Installation
135 x 18 135 x 18 Rebated
135
14
10
4
8
89.22
18
R3
4
810
135
27
88
59.65
4
513
R3
9 8
4
11
142 x 18 142 x 18 Rebated
142
93.15
810
18
R3
4
814
10
4
142
27
88
59.65
4
513
R3
9 8
4
11
187 x 18 215 x 18
187
14
10
4
8
R3
18
118.11
8 10
215
14
9
4
8
4
18
R3
810
123.5
230 x 18
810
131
230
14
4
9
8
18
R3
4
The products should be installed by a competent qualified person in accordance with the provisions of the Building Code
E2/AS1 (sec 9.4) and NZS 3604 (2011). For further information visit BRANZ Good Practice Guide, Timber Cladding.

10 KLC Generation 2 H3.2 Installation and Technical Guide
3 Guidelines for Installation
3.1 Pre-Installation Checks
There are many simple checks that should be carried out prior to installation which can avoid issues during installation.
• Where any KLC Generation 2 profile has been exposed to moisture prior to installation, the moisture content
should be checked. If the moisture content is above 15% then the product should not be installed until it returns to
15% or less.
• When excessive moisture or swelling is found the profile should be put aside and allowed to dry to its original
profiled dimensions. This is best done by placing the product in fillet and stored as outlined above. Filleting allows
air movement through the boards for drying.
• Check for any defects or damage caused during delivery or storage.
• Remove any dirt, dust or stones which may be on the product.
• If there are any areas where a primer coat has been removed or damaged, the affected area should be sanded
smooth and a primer coat applied.
• This product is primed with a factory applied alkyd (oil based) architectural coating, a similar oil-based undercoat
or primer must be used for touch-up work
• If building in “sea spray or geothermal zones”, it is the building designer’s responsibility to ensure all specified
fastenings, fittings, and flashings comply with NZS 3604, Section 4 – Durability.
3.2 Framing
• The timber framing must comply with NZS3604 – Timber Famed Buildings with maximum of 600mm centres.
• The moisture content of the framing must not exceed 20% at the time of fixing the weatherboard. Excessive
moisture content in the timber framing may cause movement in the framing structure thus altering the
weatherboard positioning.
• Additional framing may be required at soffit, corners, windows and door opening