How Do You Insulate Door Mail Slots?

Insulating door mail slots can be a cost-effective way to reduce energy costs and improve your home’s overall insulation. The most effective way to insulate door mail slots is to use an insulating sealant. This sealant is available in a spray form and can be applied using a spray gun or a roller. If you are using a spray gun, be sure to use a low pressure setting to avoid damage to the surfaces being treated.

You can also use an insulating sealant applied with a roller, but be sure to follow the manufacturer’s instructions carefully. Once the sealant has been applied, allow it to dry thoroughly before installing your door.

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