Painted Metal Roofing for Heat Shield ok?

[kwmccrea]

Any idea if using metal roofing that is painted will off-gas when hot? Should I only stick to unpainted?

 

[bigealta]

Good question? IDK?

 

[stoveliker]

A heat shield where? On the Wall?
What stove?
What distance to the stove?

I would go with bare or stove painted bare metal.

 

[begreen]

For roofing, there's no problem with insulated chimney pipe going up through it. Metal roofing is typically powder-coated so it may also be ok as a heat shield. However, it's always a good idea to check with the manufacturer. Some metal roofing is coated with PDVF resin.

 

[LMax]

I don't know about painted, but in case you decide to go unpainted, our installer told us galvanized steel creates a toxic gas when heated behind wood stoves. He recommended 12 gauge stainless steel with a 1 inch air gap.

 

[all night moe]

On a hot summer day, you can fry an egg on the roof. I'd say it depends on your stove clearance.

 

[begreen]

I don't know about painted, but in case you decide to go unpainted, our installer told us galvanized steel creates a toxic gas when heated behind wood stoves. He recommended 12 gauge stainless steel with a 1 inch air gap.

Installation details are important. Galvanized steel is fairly stable up to 390ºF. Typical wall shielding stays well below that. It's a bad idea to use galvanized for stove pipe because it will easily exceed that temperature, but a heat shield is unlikely to get too hot unless clearances are ignored.

 

[3650]

I'm using painted steel siding for a heat shield. No problems. I even put one on the stove itself with a one inch gap and it's not burning yet.