Concrete roof

[Danny Pritchard]

Is anyone familiar with this type of roof?It is a concrete type material with some type of coating painted on top.The picture is from the balcony they also had this on a covered walkway.This was on a new home.There were several things about this roof that I questioned.

Download Attachment: Concrete roof.jpg

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Download Attachment: Poorly sealed flat roof flashing.jpg

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[hausdok]

Hi,

Are you absolutely sure it is concrete? It doesn't look like a concrete roof to me. It looks like a urethane textured surface.

One Team - One Fight!!!

Mike

[Danny Pritchard]

Mike,

This was a hard surface.It seemed like a concrete material to me.When you say urethane if you are talking about a rubber type material I would have expected it to cover the drip edge in the 2nd photo.

[kurt]

Was it Flexicor panels w/ a sealant?

[Danny Pritchard]

I'm not familiar with flexicor panels.What I normally see is either a rolled roofing or a concrete type roof over a rubber membrane similar to a showerpan construction.The way this roof was flashed sent up a red flag.

[hausdok]

Hi,

It still looks like a urethane surface to me. Is it possible that there is another drip edge beneath the one that is showing that the roof was originally bonded to.

Urethane surfaces are nothing more than a layer of liquid urethane poured over a deck that has been especially primed. The joints, flashings and edging are all taped in first with fiberglass mesh lain in urethane and then another layer or two are applied waiting a day or two between coats. At some point, sand is spread onto a fresh coating while it is still wet and it is allowed to dry. Finally, a topcoat goes on over the sanded coat and the whole thing is air cured. The final product can be anywhere from 1/8 to 1/4 inch thick and is extremely durable and hard.

ONE TEAM - ONE FIGHT!!!

Mike

[Jim Katen]

I agree with Mike. It looks exactly like Gacodeck, a urethane coating used to waterproof decks & balconies.

- Jim Katen, Oregon

[kurt]

http://www.undergroundhomes.com/flexicore.htm

They are prestressed concrete panels fit together to form platforms for construction. I see them most often in mid-rise consruction. There are flexicore roof systems that, in essence, are "concrete" roof decks that are then sealed w/ urethane or other finish to prevent water entrance.

[Danny Pritchard]

Kurt,

They are definitely not flexicore.I'm familiar with that type of constuction just with a different name.

Mike,Jim

You may be correct.Here is a picture of an area without the drip edge.I didn't see any wall flashing at either area with this material.Is it not required?

Download Attachment: Missing drip edge.jpg

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