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About Dan Merrill
Expertise
We are a "green" roofing company. We offer information and advice on metal and synthetic cedar, tile, and slate roofing products. We also address good, sound installation practices for lifetime and slate roof installations. Generally speaking, we are experienced with any materials that have 50 year or longer, expected lifespan, such as copper, terne coated steels, Kynar painted Steel, Aluminum, etc. We do extensive Infrared scans of homes with water leaks, moisture damage, air leakage, etc. So we have a good practical knowledge of what works and what does not work in the long term. We offer no advice on asphalt or fiberglass roofing products.

Experience
Was a hobbyist/home remodeler for over 30 years. Restored over 30 homes. After retiring from engineering (27 years), I studied materials and installation practices of high-end roofing materials. This information was tempered by my engineering experience. We have developed and sell roofing "kits" to roofing contractors who do not have the time to research rarely used roofing products. We ensure that they have all the required materials, tools and information to offer their customers a solid 50 year installation.

Organizations
National Association of Home Builders Fox Valley Builders Assoc. Illinois Association of Home Builders Remodelers Council of NAHB Metal Roofing Alliance EnergyStar provider U.S. Green Builder Council Better Business Bureau

Publications
Our websites www.ecowiseinc.com and www.chicagometalroofing.com, Fox Tails, publication of the Fox Valley Builders Association

Education/Credentials
Tech certificate in Mechanical Drafting, 1978. Self-taught Engineer. Many certificates held. Have achieved NAHB "Certified Graduate Remodeler" designation. Graduate of Green Builder College. Licensed, insured & Bonded Roofer in Illinois.

Awards and Honors
Holder of many Patents, Member of Mensa

 
   

You are here:  Experts > Home/Garden > Home Improvement/Repair > Roofing > installation

Roofing - installation


Expert: Dan Merrill - 6/28/2009

Question
I am considering re reroofing with Enviroshake and heard that it is preferable to be installed over plywood...is that correct?  I currently have a cedar wood shake roof with lathing...
Is there a "green" product that has a 50 year warranty that can be installed over my current underlayment and would the use of plywood over my existing subsurface give me any additional benefit?

Answer
Enviroshake is approved for installation of spaced board (roof lath) construction, it does not require plywood.
Assuming your home was built to code, you would not get any real benefit from adding a plywood roof deck over your present spaced board construction.
My personal preference, even though it is not required by code is to use the roof lath construction and a breathable/permeable underlayment. Anything that reduces attic moisture is a good idea.

Good luck,

Dan

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