How to Repair a Leaking Mailbox


Mailboxes come in a variety of shapes and sizes. They are made from several types of materials as well. Although they are meant to keep your incoming mail dry and secure, mailboxes sometimes develop leaks. Because they are exposed to the weather at all times, rain water quickly settles inside your mailbox. Repairing a leaking mailbox is much like preventing leaks around windows and doors on your home. Most leaks occur around the fasteners securing the mailbox together and to the platform where it attaches.

Things You'll Need

  • Screwdriver
  • Hammer
  • Silicone caulk
  • Caulking gun
  • Check the mailbox door for bends, if you have a metal mailbox. Bends prevent the door from closing securely and allow rain to enter. Bend the door straight with your hands until the door closes securely. If you have a plastic or resin box that has a warped door, purchase a replacement door.

  • Open the mailbox door and inspect the screws or nails securing the bottom of the mailbox to the platform. Tighten screws with the appropriate screwdriver or hammer loose nails. Apply silicone caulk over each screw and nail head with a caulking gun.

  • Apply a bead of caulk on the inside bottom edge between the sides and the rear of the mailbox with the caulking gun. This helps to prevent water that settles on the platform from seeping inside the mailbox.

  • Caulk around screw and nail heads on the outside top and sides with the silicone caulk and caulking gun. Loose screw and nail heads allow water to seep through. Caulking seals the holes and helps keep the mailbox dry inside.

  • Fill any cracks on the mailbox with caulk, if you have a plastic or resin one-piece mailbox.

Tips & Warnings

  • Replace a rusty metal or badly damaged plastic mailbox.

Related Searches


Promoted By Zergnet


You May Also Like

  • How to Restore Drywall After Water Damage

    In the event that your walls or ceiling are damaged due to flood or rain, you will need to know how to...

  • How to Refinish Rusted Metal

    When certain metals, such as iron or steel, are exposed to natural elements, like rain or humidity, the metal may begin to...

  • How to Repair a Mailbox

    Everyday when you walk out to your mailbox to pick up your mail the door is standing wide open. Every person who...

  • How to Weatherproof a Mailbox

    If your mailbox is situated curbside or on the exterior of your house, this article is for you. Because your mailbox is...

  • How to Fix a Leaking Shower Door

    Most people have encountered a leaking shower door. A puddle of water located beneath the shower door on the outside of the...

  • How to Fix a Leaking Spigot

    Leaky outdoor spigots waste hundreds of gallons of water every year, costing homeowners hundreds of dollars over the ownership of their home....

Related Searches

Check It Out

22 DIY Ways to Update Your Home on a Small Budget

Is DIY in your DNA? Become part of our maker community.
Submit Your Work!