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How to install a mail slot in brick wall thru garage drywall

villager | Posted in General Questions on

How do I install a mail slot in an exterior brick wall thru garage drywall? What is the distance between the garage wall beams? Thank you.

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  1. GBA Editor
    Martin Holladay | | #1

    I'm not sure that I understand your question, but I'll take a stab at it.

    If you want to install a mail slot through a brick wall, you'll need a masonry saw. It looks like a chainsaw, but it has a big abrasive wheel on it that can cut through bricks. This tool can be rented.

    You may also need a hammer drill with a masonry bit and a brick chisel.

    The thickness of the wall varies depending on the construction details. Here's one possibility:
    Brick veneer: about 4 inches
    Drainage gap: about 1 inch
    Wall sheathing: about 1/2 inch
    Studs: 3 1/2 inches
    Drywall: 1/2 inch
    Total wall thickness: 9 1/2 inches

    The wall can be thicker -- switching from 2x4 studs to 2x6 studs adds 2 inches, and adding exterior foam insulation can add 1 or 2 inches.

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