Patio Pet Doors - Installation - Gap Between Pet Door and Sliding Door

Modified on Wed, 25 Jun at 8:16 AM

Noticing a gap between your sliding door and the pet door insert? You're not alone - this is a common issue and can usually be fixed with a couple of easy adjustments.


Why this might be happening:

  • Your sliding door or track might not be level

  • The door may not press firmly against the pet door

  • The rollers underneath could be uneven or in need of a quick tune-up

Option 1: Use Adhesive Foam Strips

A quick and easy fix is to apply weather-seal foam strips to help close the gap and improve insulation.

What to do:

  • Pick up some adhesive foam weather seal (available online through Hakuna Pets Spare Parts for Patio Pet Doors or available at most hardware stores)

  • Apply it along the edge of your sliding door where it meets your Patio Pet Door

Still within your 30-Day Return window?

We’ve got you covered! Reach out to us at support@hakunapets.com, and we’ll send you some weather seal at no cost.


Option 2: Adjust Your Sliding Door Rollers

Sometimes your sliding door just needs a small adjustment to sit flush with the pet door.


Step-by-step:

  1. Find the adjustment screws

    • They’re usually at the bottom corners of the sliding door

    • You might need to pop off a small plastic cap to access them

  2. Raise or lower the door

    • Use a Phillips or flathead screwdriver

    • Turn screws clockwise to raise the door

    • Turn counterclockwise to lower it

    • Adjust both sides a little at a time until the door sits level

  3. Check the fit

    • Slide the door open and closed

    • Make sure it moves smoothly and sits flush with the pet door insert

  4. Clean and lubricate the track

    • Clear out any dirt or debris from the bottom track

    • Add a bit of silicone-based spray lubricant to help everything glide like new


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