Tulsa - A new roof for some Tulsans has come with a potentially deadly side effect.

Mark Amarro is a home heating expert who thought he's seen it all. But this year, he's noticing something different.

"I've been having a lot of problems with vent pipes being disconnected," Amarro said.

In fact, he's seen it happen in close to 30 homes in the just the past couple of weeks. He says it is a very alarming problem.

This one was loose and laying on its side venting loose carbon monoxide into the attic here," Ammaro said, pointing to a pipe that he had recently repaired in a Tulsa attic.

There seems to be one common thread with the repairs. Amarro is seeing it happen in homes that have recently gotten a new roof. Some installers rip the vent cap from the roof decking, causing the vent piping below to separate. It's a hidden danger that most homeowners probably aren't aware of.

"A lot of folks keep Christmas ornaments, decorations and stuff in the attic, and if you turn on the furnace and never know it, it doesn't take much to pass out and not wake up."

The best advice is to check your vent pipes. Ensure they are properly fastened and are sending the fumes outdoors especially is you've recently gotten a new roof.

Since carbon monoxide is often called the silent killer, experts recommend that homeowners also equip themselves with a carbon monoxide detector, just to be safe.

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