• Sign In
  • Create Account
  • Sign Out
  • My Account
  • NEWS
  • PRODUCTS
  • A&D
  • INSTALLATION
  • MARKETS
  • AWARDS
  • EDUCATION
  • BUYER'S GUIDE
  • MEDIA
  • EMAGAZINE
  • SIGN UP
cart
facebook twitter linkedin youtube
  • NEWS
  • Breaking Flooring News
  • eNewsletters
  • PRODUCTS
  • Carpet & Area Rugs
  • Hardwood
  • Installation Products
  • Installation Tools & Equipment
  • Laminate
  • Resilient
  • Specialty
  • Tile & Stone
  • MARKETS
  • Commercial
  • Residential
  • AWARDS
  • Installation Awards
  • Top Flooring Products
  • EDUCATION
  • Continuing Education
  • Webinars
  • MEDIA
  • FLOOR Podcast
  • Videos
  • TISE 2025 Videos
  • Product Spotlights
  • eBooks
  • EMAGAZINE
  • eMagazine
  • Archive Issues
  • Contact
  • Advertise
search
cart
facebook twitter linkedin youtube
  • Sign In
  • Create Account
  • Sign Out
  • My Account
  • NEWS
    • Breaking Flooring News
    • eNewsletters
  • PRODUCTS
    • Carpet & Area Rugs
    • Hardwood
    • Installation Products
    • Installation Tools & Equipment
    • Laminate
    • Resilient
    • Specialty
    • Tile & Stone
  • A&D
  • INSTALLATION
  • MARKETS
    • Commercial
    • Residential
  • AWARDS
    • Installation Awards
    • Top Flooring Products
  • EDUCATION
    • Continuing Education
    • Webinars
  • BUYER'S GUIDE
  • MEDIA
    • FLOOR Podcast
    • Videos
    • TISE 2025 Videos
    • Product Spotlights
    • eBooks
  • EMAGAZINE
    • eMagazine
    • Archive Issues
    • Contact
    • Advertise
  • SIGN UP
Flooring InstallationColumnsTile & Stone FlooringInstallation How-ToCTEF Tile Tip

CTEF Tile Tip: Backer Board 101

By Scott Carothers
backer board
In this photo, the board is butted tightly together in some areas while widely gapped in others and there is no mesh tape on the seams.
September 15, 2020

The proper installation of backer board in a tile assembly is the foundation for success. Without a solid base, the balance of the installation could be in jeopardy.

The question has been raised. How difficult can it be to properly install backer board (panels) for a tile installation? The manufacturers of this product category provide written instructions, maintains a website full of “How to Install’ guidelines, and ultimately, the instruction label is glued either on the face or back of the board. How can a conscientious installer miss three opportunities to get it right? Unfortunately, it happens way too often.

The basis of backer board installation is found in the ANSI A108.11, Interior Installation of Cementitious Backer Units document. This standard provides all the requirements necessary for a successful installation. 

This manufacturer’s installation requirements are almost identical to the ANSI standard. The subfloor must be a minimum of 19/32” (5/8”). Stagger the backer board end joints a minimum of 16” so that four corners do not meet as well as offsetting the board joints a minimum of 8” from the subfloor intersections. Spread the adhesive, (thin-set mortar) in a straight line, placing the panel into the mortar fitting the edges of the panels closely, but not forced together. Fasten while still wet, securing the board with 1-1/2” (38 mm) 11-gauge hot-dipped galvanized roofing nails or 1-1/4” (32 mm) corrosion-resistant screws at 8” (203 mm) on center around the perimeter and in the field of the board. Fill the joints with modified dry-set mortar and immediately embed alkali-resistant, fiberglass mesh joint tape. 

The job did get off to a good start. The plywood subfloor was the required thickness and thin-set mortar was applied on the subfloor just before the board was set in place. But, these two requirements are where the good part ends and the hybrid tricks begin.

As you can see in the photo, the board is butted tightly together in some areas while widely gapped in others and there is no mesh tape on the seams. The fasteners should be 8” on center, but along the edge of the board, they are 10” to 14” apart. However, the really big fail is that there are NO screws in the field. Notice too, that the tile installation has already begun, but it probably will not enjoy a long life. One last thing: the instruction label must be removed. 

With the well-established ANSI standards in place along with the instructions from the manufacturer, which if followed, provides a warranty, why would the installer create his or her own hybrid system? Remember that in doing so, the installer is completely responsible for the failure.

KEYWORDS: industry standards installing tile

Share This Story

Looking for a reprint of this article?
From high-res PDFs to custom plaques, order your copy today!

Scott carothers 2025

Scott Carothers is the Academic Director of the Ceramic Tile Education Foundation (CTEF) headquartered in Mt. Juliet, Tennessee (Nashville area). In 2007, he was hired and tasked with creating the Certified Tile Installer (CTI) program and in 2012, he was part of the team that created the Advanced Certifications for Tile Installers (ACT) program. 

For eighteen years, he has been providing training and education to others in the tile industry. Carothers has been involved in the ceramic tile industry for over 44 years and was the owner of a successful retail store and installation firm prior to coming to CTEF. 

Carothers served as President and Chairman of the Board of the National Tile Contractors Association (NTCA), Chairman of the NTCA Technical Committee, named the NTCA Tile Person of the Year in 2005 and received the NTCA Ring of Honor in 2013. He is a voting member of the American National Standards Institute (ANSI), the Tile Council of North America (TCNA) Handbook, and NTCA Technical Committees. 

Scott has authored over 185 articles in tile industry print magazines including Floor Covering Installer, Tile, TileLetter, and eMagazine/Newsletter publications such as Floor Trends & Installation and TIleLetter along with covering numerous topics on the CTEF Blog, thereby sharing his knowledge and installation experience with his readers. Additionally, he recently retired from being a presenter and trainer for the NTCA Workshop and Regional Training programs and the NTCA Technical Hotline.

He may be contacted at scott@tilecareer.com or 864-222-2131.

Recommended Content

JOIN TODAY
To unlock your recommendations.

Already have an account? Sign In

  • resilient flooring

    The 7 Types of Resilient Flooring

    The resilient flooring category is comprised of many...
    Resilient Flooring
    By: Resilient Floorcovering Institute
  • QuickDrain USA’s ShowerLine linear drain

    Tips for Curbless Shower Installation Using a Linear Drain

    Consider these four tips when planning for a curbless...
    Installation How-To
    By: Darryl Jones
  • 2024 New Flooring Product Guide

    2024 New Flooring Products Guide

    We explore this year's introductions in area rugs,...
    Commercial Flooring
    By: FLOOR Trends & Installation Editors
You must login or register in order to post a comment.

Report Abusive Comment

close

1 COMPLIMENTARY ARTICLE(S) LEFT

Loader

Already a Registered User? Sign in now.

Subscribe For Free!
  • eMagazine
  • eNewsletter
  • Online Registration
  • Manage My Preferences
  • Subscription Customer Service

Retailers Share Top Takeaways from Shaw Flooring Network Convention

Retailers Share Top Takeaways from Shaw Flooring Network Convention

Takeaways from the 2024 AHSG Convention & Member Outlook for 2025

Takeaways from the 2024 AHSG Convention & Member Outlook for 2025

What Shaw Flooring Network Dealers are Banking on for 2025

What Shaw Flooring Network Dealers are Banking on for 2025

Shaw Flooring Network Retailers Report Post-Election Sales Surge

Shaw Flooring Network Retailers Report Post-Election Sales Surge

More Videos

Popular Stories

Ken Ballin manning the Tools 4 Flooring booth in Tool Alley at TISE 2025

10 Tool Innovations Every Flooring Contractor Should Have on Their Wish List

RevWood American Originals.jpg

How Mohawk's Domestic Manufacturing Powers Growth in Challenging Times

Paul Hambidge

The Waterproof Laminate Myth: Why Consumer Expectations May Never Be Met

Installation Awards - Vote Now!

Events

June 9, 2025

NeoCon 2025

A trade show for the commercial interior design industry.

December 1, 2030

Webinar Sponsorship Information

For webinar sponsorship information, visit www.bnpevents.com/webinars or email webinars@bnpmedia.com.

View All Submit An Event

Poll

Flooring Groups

Flooring retailers, do you belong to a buying, marketing or franchise group?
View Results Poll Archive

Products

2025 BNI Interiors Square Foot Costbook

2025 BNI Interiors Square Foot Costbook

See More Products

FLOORtalk podcasts - Listen Now

Related Articles

  • marble shower with iron oxide discoloration

    Marble Tile in Showers: A Cautionary Tale

    See More
  • Shower installation D. W. Sanders

    No Drill Holes: A Cautionary Tale of a Shower Installation Gone Wrong

    See More
  • kitchen floor

    Regrouting Caution for Cement Grouts

    See More
×

We’re rolling out the red carpet of flooring knowledge!

Stay in the know on the latest flooring retail trends.

JOIN TODAY!
  • RESOURCES
    • Advertise
    • Contact Us
    • Directories
    • Store
    • Want More
  • SIGN UP TODAY
    • Create Account
    • eMagazine
    • eNewsletters
    • Customer Service
    • Manage Preferences
  • SERVICES
    • Marketing Services
    • Reprints
    • Market Research
    • List Rental
    • Survey/Respondent Access
  • STAY CONNECTED
    • LinkedIn
    • Facebook
    • Instagram
    • YouTube
    • X (Twitter)
  • PRIVACY
    • PRIVACY POLICY
    • TERMS & CONDITIONS
    • DO NOT SELL MY PERSONAL INFORMATION
    • PRIVACY REQUEST
    • ACCESSIBILITY

Copyright ©2025. All Rights Reserved BNP Media.

Design, CMS, Hosting & Web Development :: ePublishing

search
cart
facebook twitter linkedin youtube
  • Sign In
  • Create Account
  • Sign Out
  • My Account
  • NEWS
    • Breaking Flooring News
    • eNewsletters
  • PRODUCTS
    • Carpet & Area Rugs
    • Hardwood
    • Installation Products
    • Installation Tools & Equipment
    • Laminate
    • Resilient
    • Specialty
    • Tile & Stone
  • A&D
  • INSTALLATION
  • MARKETS
    • Commercial
    • Residential
  • AWARDS
    • Installation Awards
    • Top Flooring Products
  • EDUCATION
    • Continuing Education
    • Webinars
  • BUYER'S GUIDE
  • MEDIA
    • FLOOR Podcast
    • Videos
    • TISE 2025 Videos
    • Product Spotlights
    • eBooks
  • EMAGAZINE
    • eMagazine
    • Archive Issues
    • Contact
    • Advertise
  • SIGN UP