Woodruf Masonite Roof Panel (C) Daniel FriedmanFiberboard Roof Tiles / Shingles
Masonite™ Woodruf™ Fiberboard Roof Shingles

  • FIBER-WOOD & FIBERBOARD ROOFING - home - CONTENTS: Masonite Fiberboard Roofing Shingles failures, settlements. Masonite Woodruf Shingle Life Expectancy & Wear Factors. Woodruf Fiberboard Roof failures, claims, settlements. List of fiber cement & hardboard roof shingle failures, warranty claims, manufacturer.
  • POST a QUESTION or READ FAQs about Masonite & Woodruf fiberboard roof shingles, failures, warranties, class actions, inspection, maintenance, repair, or replacement

InspectAPedia tolerates no conflicts of interest. We have no relationship with advertisers, products, or services discussed at this website.

Masonite shingles information website: this website provides detailed information about Masonite™ Woodruf™ fiberboard roof shingles and includes advice for home inspectors, home buyers, and homeowners where these roofing products are used.

Several hardboard-based and fiber cement based roofing products have not performed as well as originally anticipated, experienced early failure, and were the subject of roof warranty claims. Masonite Woodruff™, Cemwood™, Hardishake/Hardislate™, CalShake™ and Fire Free™ are examples of product names that have suffered these problems.

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Wood Fiber Based Roofing, including Masonite Woodruf™ Fiberboard Roofs: inspection, failures, warranty information, replacement

Woodruf roof shingle panel underside (C) Daniel FriedmanThis article explains wood-fiber based shingle failures such as Masonite Woodruf fiberboard shingle life, failures, and warranty claims for this and other wood-fiber roofing products.

Woodruf™ roof shingles, a fiberboard roofing product, were a Masonite™ roofing product consisting of "pressure bonded fibers designed to resemble natural cedar roofing" sold in the United States into the 1990's and have also been found installed on homes in Canada.

Masonite Woodruf shingles were the subject of a class action lawsuit and settlement concerning the durability of this roofing product - we discuss the Woodruf roofing class action settlement below.

However the Woodruf™ shingle claims period expired on January 6, 2009.

Our photo (left) shows how easily a Woodruf roof shingle panel can be identified if you have access to its under-side.

The roofing shingle product was produced in four-foot sections that were 12" wide and with a nominal thickness of 7/16". The actual thickness varies due to raised ridges that give Woodruf shingles the appearance of a wood shake or shingle.

Original Life Expectancy of Woodruf Shingles

While we have observed statements that the original life expectancy of Woodruf shingles was 30 years, 40 years, and even 50 years, (including some original Woodruf shingle brochures), our sources principally indicate that Woodruf shingles were marketed with a 30 year life expectancy.

As of this artcle's last update (October 2014) there is no warranty service remaining on this roofing product.

Composition of Woodruf™ Fiberboard Shingles

The Woodruf™ shingle fiberboard was treated with a water repellant and a bonding agent to permit outdoor exposure.

This product is softer than Masonite's hardboard products and to remain durable required an installation that permitted good roof drying (similar to the requirement for wood shingles or shakes). This is particularly true because the factory edges as well as any cut edges made during installation were not sealed.

Intended Use of Woodruf™ Fiberboard Roof Shingles

Masonite Woodruf roofing was intended for steep slope roofs and should not be installed on slopes lower than 4" of rise in 12" of run (a 4/12 roof). The shingles were to be installed over roofing felt on a sound roof deck, with a 9" shingle exposure and requiring eight nails per roofing panel.

Special Flashing Required for Woodruf™ Roofing Shingles

Woodruf shingle flashing (C) Daniel Friedman


Between every Woodruf roofing panel and its abutting neighbor an alumium flashing strip was installed under the butt joint.

You can see this special Woodruf flashing strip at the bottom of the butt joint in the lower center of our photograph (left).

This strip should be 12" in length and should extend to the head or upper edge of the shingle. Flashing for shingle butt joints provided by the manufacturer included a lip at the upper edge to keep the strip from sliding out of place.

A raised ridge in the center of each flashing section acts as a spacer and allows for thermal expansion of the shingles without buckling the roof.



Common Defects and Signs of Deterioration found on Masonite Woodruf™ Roofs and on Fibre Cement Roof Cladding

Masonite Woodruf™-type Roof Shingles

Woodruf shingle edge delamination (C) Daniel Friedman
  • Buckling Woodruf™ shingle panels may occur if the proper aluminum flashing strips were not used at the butt joints
  • Cut edges in the Woodruf™ shingles, made to fit to rake edges, valleys, and around chimneys or roof penetrations are more likely to be deteriorated from weather exposure and water.

    Swollen, delaminating Woodruf shingle material becomes soft and easily crumbles, suggesting that an on-roof inspection may further damage already-fragile or worn materials.

    Our photo (left) shows typical softening and aging at the edge of a Woodruf shingle panel.
  • Fungal growth in fiber-cement roofing products: modern wood-cement and other fibre cement products are not impervious to deterioration or fungal growth. Branko (2006) points out that in modern cement-bonded aggregate and fibre products, especially in prolonged-wet environments, particularly in wood-cement and straw-cement products (such as StrawCrete™ - illustrated at below left from Branko, or HempCrete™ or HLC™ - illustrated as a modular building block at below right from Wikipedia). Branko's article illustrates by on-site photos of roofing materials that these materials can support fungal growths, even visible "mushrooms" such as the genus Peziza. - Branko (2006).

    HempCrete™, used as a masonry block building material (below right - Wikipedia.com 2014) is a mixture of hemp hurds and lime, sand, or cement. - Elfordy (2008). Hempcrete is a light-weight Australian building product used in both roofing and building blocks, also referred to as HLC or "Hemp Lime Composite" described by the manufacturer as fire, rot and insect-resistant.

StrawCrete illustration from Branko (2006) HempCrete from Wikipedia - 2014

  • Thick, swelling Woodruf™ shingles may be found anywhere in the roof area, indicating material that is at the end of its life.
Woodruf shingle moss and lichens (C) Daniel Friedman

  • Moss, lichens, and deterioration caused by shading from overhanging trees and tree debris can substantially reduce the life of any roofing product, particularly one that may absorb moisture, swell, and delaminate when wet

    Our photo (left) shows moss and lichens growing in a butt joint between two Woodruf roof shingle panels.

    It appears that the desired special flashing strip may have been omitted at this location as well.





Replacements for Masonite™ Woodruf Shingles?

Question: what is an appropriate replacement for Woodruf shingle roofs?

I own a roofing company, have an insurance adjuster background, and also do roof inspections for insurance companies.

My opinion on the Woodruf product is to replace it with a 30 year laminate shingle. I have another roofing company stating the Woodruf product was marketed as high quality and that it was expensive. Thus a higher quality shingle should serve as a replacement.

They do not agree with my replacement with the 30 year laminate. This particular Woodruf roof is in considerably good shape considering the product, but replacement hinges on one shingle found missing during my inspection. Do you know of any Woodruf shingle replacements available, like say one shingle?

Lastly, what supportive document do you have regarding the marketing of Woodruf shingles as a 30 year product that you can share with me? - Anon.

Reply: High quality laminate asphalt shingles or cedar wood roofing?

To replace a single roof shingle for the case you mention, you might try

  • Removing a shingle in good condition from an area on the roof that is not visible from the ground, repairing the spot of removal using another durable roofing product.
  • Using a slate of similar color and thickness. You may be able to install the replacement in either case using slate hooks to minimize the disturbance to surrounding roofing.

A more general question has been brought by several readers about the appropriate roofing material to use when the entire Woodruf shingle roof is ready for replacement.

Our OPINION is that a high quality laminate roofing shingle would be an appropriate replacement for Woodruf in that case.

It may be a difficult argument to claim that the original Woodruf roof met the quality and durability expected by the building owner and that therefore its replacement should be a product of the same original cost. The durability and quality of Woodruf roofing that was anticipated by the manufacturer, roofers, and consumers was unfortunately not met, and is brought into question by the early failure issues that are well documented.

We would welcome suggestions about top-end in appearance and durability roofing products that meet the original life-expectancy claimed for the Woodruf product (and that deliver that performance).

Slate? Not likely to be technically possible due to weight and structure issues.

Wood? A close cosmetically similar roof would be red cedar shingles but there may be local fire and code issues, maintenance costs, etc. that won't appeal to some building owners, not to mention the short roof life if you install wood shingles over solid plywood decking - so is it cost justified to redesign the roof deck or add venting?.

Perhaps cement roofing tiles? Weight and appeaarnce issues. Do you know what product the other roofer wants to install?

All of the Woodruf roofing material information we have readily found is published at this website.

We are looking for early Woodruf Roof Shingle marketing brochures that included life expectancy statements - CONTACT us if you find such documents.

About the anticipated product life, we have seen life expectancy claims of 30, 40, and even 50 years but not a public document with those numbers.

We would welcome your views and added suggestions

Masonite™ Woodruf Shingle Class Action Lawsuit Settlement Information for Homeowners

Also see Masonite Woodruf® Roofing or Masonite OmniWood® Siding Lawsuit Settlement Notice - PDF file

If you qualify as an Eligible Claimant, you may be entitled to recover under the Settlement. However the claims period expired on January 6, 2009.

To be an Eligible Claimant, you must:

  1. Own property in the United States or its Territories on which Woodruf roofing has been incorporated and installed since January 1, 1980, and have not assigned the claim regarding the alleged damage caused by Woodruf;
  2. Be a subsequent purchaser of such property and have properly documented assignments determined to be valid under the Settlement; or
  3. Own or have formerly owned such property and have made Prior Un-Reimbursed Expenditures as defined by the Settlement.

Eligible Claimants do not include persons, associations or entities who made claims or filed lawsuits against Defendants other than in the Smith class action, if they were represented by counsel other than Plaintiffs' Class Counsel in the Smith class action, and their claims or lawsuits were resolved by payment based upon the entire square footage of Masonite Woodruf roofing on the structure, full release or judicial action

The Woodruf shingle claims period expired on January 6, 2009. Current information about Masonite Woodruf settlement and claims assistance is available by calling 1-800-256-6990. This information is available on the Internet at: http://www.masoniteclaims.com.

If are experiencing a problem or failure with Masonite Hardboard Siding or other wood fiberboard siding products see SIDING HARDBOARD.

Also see fiber cement or asbestos cement siding information at SIDING, ASBESTOS CEMENT

Reader Questions: how do I determine the life expectancy of mymy Woodruf or Masonite Roof Shingle, where is my warranty & where is the explanation of the replacement roof choice and its life expectancy?

How do I get warranty info or any documentation explaining the life expectancy or comparable replacement for Masonite Woodruf? - Ben 2/27/2013



The contact information for the manufacturer of your roof is in the article just above. If you can provide the product name of what's on your roof and a reasonably accurate guess at when the roof was installed, the company should have no trouble giving you a copy of the appropriate warranty. It's important to have a good idea of when the roof was installed or when the material was manufactured because like many manufacturers, roofing product manufacturers may offer different warranty terms for products made during different eras.

If you are asking about the life expectancy of a replacement product you'd need to specify what the product is.

If you are asking about the existing product, given the failures already reported, and with not a shred of information about your particular installation, with respect, I'm doubtful that a guess about the remaining life of your roof would be more than wild arm-waving.

Most home inspectors, seeing a known-problem-product will be reluctant to bet their house and kids'education money on promising you any remaining life whatsoever, or more accurately, would report on the evidence of current leakage and give a warning that you need to be prepared (financially) to replace the roof at any time

If you can provide the product name of what's on your roof and a reasonably accurate guess at when the roof was installed, the manufacturing company should have no trouble giving you a copy of the appropriate warranty.

Watch out: It's important to have a good idea of when the roof was installed or when the material was manufactured because like many manufacturers, roofing product manufacturers may offer different warranty terms for products made during different eras.

List of Fiberboard Roof Shingle Companies Warranty Claims & Website

  • James Hardie distributes roofing and siding products in many countries around the world, including roofs we have inspected in the United States, Canada, and New Zealand (www.jameshardie.co.nz)
    PlaceMakers are New Zealand's largest distributor of James Hardie fiber cement products: Website: www.placemakers.co.nz/products/building-materials/fibre-cement.aspx

    Also see Environmental Issues - Asbestos Roofing/Siding. (Also see Hardie's Fibrolite™ or Fibro where used in Australia)

    and see JamesHardie HardiePlank Siding
  • Masonite Woodruf® Roofing or Masonite OmniWood® Siding Lawsuit Settlement Notice - PDF file
  • Masonite fiberboard Roof Shingles & Siding: Information about Masonite roofing products is at MASONITE WOODRUF FIBERBOARD ROOFING. Contact information is at: Chicago, IL, 312-750-0900 . Cass action settlements involving masonite hardboard, omniboard, woodruff shingles.

    [Watch out: We found the "official" website www.masoniteclaims.com not useful - basically clicking on its links simply present advertisements - web search 09/28/2010]
  • Cemwood Roof Shakes: Information about American Cemwood roofing shakes and related products is at AMERICAN CEMWOOD ROOFING.

    Contact information is at: American Cemwood - imitation wood shakes crack, swell and discolor. The American Cemwood roofing settlement includes Cemwood Shakes, Permatek Shakes, Permatek and Permatek II. Cascade Shake, Trieste Tile, Pacific Slate, Permatek II and Royal Shake.

    Class action settlement site: www.cemwoodclaims.com or for help identifying Cemwood or Permatek shakes on a roof

    see http://www.cemwoodclaims.com/identify.html Claims administrator: 1-800-708-3266.
  • FireFree Plus fiber cement Roof Shakes: Re-Con Building Products roof tiles composed of 2/3 Portland Cement and 1/3 wood cellulose fiber crack, swell and discolor.

    Cass action settlement site: [Watch out: We found the "official" website www.firefreeclaims.comnot useful - basically clicking on its links simply present advertisements - web search 09/28/2010 & 03/01/2011]

    Re-Con Building Products, Inc., a subsidiary of Stone Mountain Holdings, Inc., went out of business and into receivership in October, 2007.

    Also see Fire Free Plus Roofing, 4850 SW Scholls Ferry Road # 203, Portland, OR 97225-1692, Tel: (205) 879-5420

(George Podrug provided Masonite Woodruf roofing information for home inspectors in 1999)

See WARRANTIES for ROOF SHINGLES for our complete list of roofing maufacturer contact information and various roofing claims, settlements, and warranty information.

Reader warning: plagiarist alert: beware of Infinity Roofing & Restoration who have copied our original InspectAPedia.com ® article above. Infinity's page http://www.infinityrooferblog.com/expired-roofing-alert-masonite%E2%84%A2-woodruf%E2%84%A2-fiberboard-roof-shingles/ (October 2010) plagiarized original text from this website. Notice sent 2x 10/27/2010. Only the claims lawsuit text at the very end of this document is public domain.



Continue reading at ASBESTOS & FIBER CEMENT ROOFING where our page top photo of material described as asbestos-cement roofing looks a lot (from the ground) like wood-fiber cement roofing - or select a topic from the More Reading links shown below.


Or see WARRANTY & Class Actions, Fiber Cement Shingles

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FIBER-WOOD & FIBERBOARD ROOFING at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice.

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