Use and Care Manual
TECHNICAL BULLETIN
COLORPLUS
®
TECHNOLOGY
SUPPLEMENTAL CLEANING METHOD
NOVEMBER 2018
#28
This supplement is being provided as additional guidance for removing tough stains such as clay, gypsum and cement based
mortar dust that remains on ColorPlus products after Technical Bulletin #20 (Cleaning James Hardie
®
siding) has been utilized.
Note: Not to be used on James Hardie primed products
Prior to proceeding with the method outlined below, the following requirements shall be met:
• For best results, this action should be taken as soon as possible (within 10 days) of installation on James Hardie ColorPlus Technology products.
• Tech Bulletin #20 Cleaning James Hardie
®
siding has been followed, yet tough stains still remain.
Spot clean as needed – do not apply the cleaner unnecessarily to siding that does not require additional cleaning.
Working area should be adjusted to accommodate drying times which can vary based on factors such as sun exposure, air temperature, siding color and other factors.
IMPORTANT: Failure to follow James Hardie written installation instructions and
comply with applicable building codes may violate local laws, affect building
envelope performance and may affect warranty coverage. Failure to comply with all
health and safety regulations when cutting and installing this product may result in
personal injury.
DESIGN ADVICE: Any information or assistance provided by James Hardie in relation
to specific projects must be approved by the relevant specialists engaged for the
project eg. builder, architect or engineer. James Hardie will not be responsible in
connection with any such information or assistance.
USTB 28 | Version 1 | PAGE 1 of 1
© 2018 James Hardie Building Products, Inc. All rights reserved. TM, SM, and ® denote
trademarks or registered trademarks of James Hardie Technology Limited. Cleaning product
brand names listed are trademarks of their respective owners. TB1807 11/18
Tools 1. Soft cloth.
2. Soft brush (horsehair or siding brush with polyfiber bristles).
Caution: Do not use hard brush (for example: scrub brush or an abrasive scrub sponge) which could damage the finish or siding.
3. Spray bottle or bucket for applying cleaner.
4. Garden hose for rinsing.
Cleaners A. NorthStar
®
House Wash Concentrate by Northern
®
Tool + Equipment.
Diluted to 1 part cleaner to 12 parts water (approx. 1 quart cleaner to 3 gallons water).
OR
B. Mighty Boss
™
by Zoom Cleaning Products.
Diluted to 1 part cleaner to 12 parts water (approx. 1 quart cleaner to 3 gallons water).
Do not exceed the concentrations listed above.
Caution: During cleaning, always follow the cleaning product manufacturer’s recommendations for personal protection, which may
include using appropriate gloves and eye protection. Protect any nearby plants or landscaping from overspray.
Direction 1. Spray or brush the cleaner onto the affected area.
2. Gently clean the siding with the soft brush or wet soft cloth in the direction of the grain/texture. Use care not to push too hard
against product surface.
3. Continually rinse the area until all of the cleaner has been washed off of the siding. Do not allow the cleaners to dry on the siding.
4. Let the cleaned area dry.
IMPORTANT!
Low pressure water spray, a soft bristle (nonmetal) brush is most suitable for cleaning
fiber cement products. If using a pressure washer, care must be taken to ensure that
the water stream does not damage the surface of the siding. Using wide fan tips that
are kept a minimum of 6 feet from the wall and at pressures under 1500 psi will
minimize the chance of damaging the siding.
Sand blasting can damage the fiber cement surface and is not recommended.
Acid washing can damage the fiber cement surface and is not recommended.
Note: Damage to siding arising from improper cleaning or maintenance may not be covered by
the James Hardie warranty.
Horse Hair Brush Siding Brush
1.866.442.7343 | www.jameshardiepros.com
Product warranties, safety information and additional
installation information are available at jameshardiepros.com