Layers of roof

[ROBERT V. YOUNG]

I would recommend a flashing detail.
Wind blown weather infultraction can be an issue at the eave and rakered edges.
I see wood rot.
Check for screew lift. The wood will swell when moist or high in RH.

[Dan Bowers, CMI]

Wayne -

I'd guess you're just teasing these boys cause as we all KNOW, you DO NOT go over wood shake with another roofing. At that point most other comments were cute but 2nd place.

Sample lanuage
___________________________________________

In our opinion, the roof covering appears improperly installed due to the following reason (a metal roof installed over wood shake).

Besides the fact this can place more weight on the roof structure than what it was originally designed for; this type of installation is normally not allowed by most building codes, nor insurance companies. We recommend tearing off all roof coverings and replacing the roof and decking as needed.

We recommend having a licensed and competent roofing contractor read the report; review the roofing system, its accessories and their conditions; and then service, repair, or replace any deficiencies or unreliable conditions as needed to properly correct them.

We also recommend that you verify insurability and acceptability of the roofing with your insurance company, local code authority and lender prior to closing escrow.

[ROBERT V. YOUNG]

Good point Dan.
Caught me with my pants down. Opps.
I can not even wiggel out of that one.

[Wayne Collier]

Hi Dan,

You have a good point. Florida building code does allow two layers, maybe they did not intend these type of layers together. Maybe the insurance co has not even put an eyeball on it or if they did maybe the insurance inspector did not care or did not see it? It's not leaking and it's an old house so maybe the premiums reflect that. In this area people can get away with things that are out of this world. Stay tuned I may post another picture soon!

[Dan Bowers, CMI]

Wayne -

IRC does not allow ANYTHING over wood shake. Comp maybe BUT wood shake NO. Suggest you fully verify that.

[ROBERT V. YOUNG]

Originally Posted by dbowers

Wayne -

IRC does not allow ANYTHING over wood shake. Comp maybe BUT wood shake NO. Suggest you fully verify that.

[Jeffrey R. Jonas]

Originally Posted by dbowers

Wayne -

IRC does not allow ANYTHING over wood shake. Comp maybe BUT wood shake NO. Suggest you fully verify that.

Why that thar is Kentucky sheathing! Metal is allowed to be fastened to sheathing.

Next...

[Wayne Collier]

People do things all the time and break the law. Not pulling a permit is no exception. The permit police can't be at everyones house all the time. In rural areas you can't even see most houses from the road and they have gates. Nobody is going to make these people buy a whole new roof when this one is functioning. It was noted and stated in the future the if problems develop the roof would need replaced. I posted the pic just to see what anyone had to say in regards to maybe seen that before, or some insight. I observed noted and moved on. Thanks for all the contributions from everyone

[Marcel R. Cyr]

Unaceptable installation under any standard in my book.
The roof shakes should have been stripped or at the very least, installation to 2" thick purlins @ 2' O.C. installed over the shingle directly to the rafters. But since this is roof shakes, that would not have a good outcome due to its roughnest and deformation.

Check out this link here for proper installation of 26 or 29 gauge metal roofing.

http://www.unioncorrugating.com/MasterRib.html

And click on the metal roof installation guide.

[Dan Bowers, CMI]

Wayne -

Although as home inspectors, we don't do code inspections I would certainly expect a home inspector to have knowledge of major issues.

About once a month I run into some yoyo thats put a 3rd comp roof over the first 2 roofs. I'll see a new layer of wood shakes over an old layer of wood shakes. OR new comp roof over wood shake. Recently saw new Timberline over old Tar & Gravel. AND they get written as IMPROPERLY INSTALLED, with recommendation for removal and repair or replacement AND to verify insurability and acceptability of the roofing with your insurance company, local code authority and lender prior to closing.

90% of the time the lender, insurance company or codes make them correct it to sell ..... The other 10% of the time the seller refuses and the deal flips AND seller sits on the house or turns it into a rental.

FINAL statement .... To meet code AND normally be eligible for any manufacturers warranty, something has to be installed per the MANUFACTURERS INSTALLATION GUIDELINES and Metal Roofing over Wood Shake is not PMI

[Gary Farnsworth]

My record is 5 layers. Home built in 1910 had the original wood shakes under 4 layers of comp. You should have seen the bowing of the roof rafters, even without snow. Observe, document, suggest, let the buyer decide. Take Dan B's narrations seriously.

[John Gromkoski]

Originally Posted by wsiegel

Replace it. It is not an approved application. It may be functional as someone mentioned above, for now, but what happens when another strong storm pulls thought. Don't you guys have permits in that part of the country?

Who says it is not approved?

[ROBERT V. YOUNG]

Originally Posted by gfarnsworth

My record is 5 layers. Home built in 1910 had the original wood shakes under 4 layers of comp. You should have seen the bowing of the roof rafters, even without snow. Observe, document, suggest, let the buyer decide. Take Dan B's narrations seriously.

Me to. Not inspecting but roofing trades experance.
They almost applied a sixth.
The salesman was not paid for the mistake.
The owner riped and re-decked the roof and was not happy but got a fare wage.
Shake with 5/8 ply, 3 asphalt shingles with 1/4" ply and last looked like one asphalt shingle application because of the flashing covering the bottom layers.