On its face, it seems like a strange question. After all, many recipes recommend covering or wrapping your food in aluminum foil while it cooks. However, while aluminum foil is a versatile kitchen essential, it’s not suitable for every application. If you’re using aluminum foil as an oven liner, it could cause more harm than good.

When can I use aluminum foil in the oven?
If you’re lining baking sheets, wrapping up food or covering it up to retain moisture, then aluminum foil is the way to go. It’s versatile and resistant to heat, making it a great option for cooking and baking. But when it comes to protecting your oven from spills, it’s best to keep your foil in the box. While people may recommend using aluminum foil in the oven along the bottom or the racks, doing so can actually have serious consequences. That’s because while foil is heat resistant, it isn’t completely heat-proof. Using high heat with aluminum foil in the oven bottom could cause the foil to melt, permanently damaging your appliance. Using aluminum foil as an oven liner can also cause the following issues:

• Using foil on oven racks can disrupt heat distribution in the oven and interfere with optimal cooking results.
• Covering up vent openings in the bottom of the oven can lead to insufficient air flow, heat distribution and issues with performance.
• Heat reflecting off aluminum foil can overcook foods or damage your oven’s heating elements. 
• Lining your gas oven with aluminum foil can block heat, air flow, and produce less than optimal cooking results.
• Aluminium foil can cause scratching of the oven's enamel surfaces, and can also melt when contacting hot surfaces or elements, potentially causing cosmetic or permanent functional damage to elements or surfaces.

Source: whirlpool.ca
 

On its face, it seems like a strange question. After all, many recipes recommend covering or wrapping your food in aluminum foil while it cooks. However, while aluminum foil is a versatile kitchen essential, it’s not suitable for every application. If you’re using aluminum foil as an oven liner, it could cause more harm than good.

When can I use aluminum foil in the oven?
If you’re lining baking sheets, wrapping up food or covering it up to retain moisture, then aluminum foil is the way to go. It’s versatile and resistant to heat, making it a great option for cooking and baking. But when it comes to protecting your oven from spills, it’s best to keep your foil in the box. While people may recommend using aluminum foil in the oven along the bottom or the racks, doing so can actually have serious consequences. That’s because while foil is heat resistant, it isn’t completely heat-proof. Using high heat with aluminum foil in the oven bottom could cause the foil to melt, permanently damaging your appliance. Using aluminum foil as an oven liner can also cause the following issues:

• Using foil on oven racks can disrupt heat distribution in the oven and interfere with optimal cooking results.
• Covering up vent openings in the bottom of the oven can lead to insufficient air flow, heat distribution and issues with performance.
• Heat reflecting off aluminum foil can overcook foods or damage your oven’s heating elements. 
• Lining your gas oven with aluminum foil can block heat, air flow, and produce less than optimal cooking results.
• Aluminium foil can cause scratching of the oven's enamel surfaces, and can also melt when contacting hot surfaces or elements, potentially causing cosmetic or permanent functional damage to elements or surfaces.

Source: whirlpool.ca