Sliding glass door seals can help stop air from leaking into or outside of your home.
Sliding glass door air leak.
If you cannot re create the leak problem inspect the interior of the door for stains or rust.
If a frame is crooked water can leak into the gaps between door and frame.
However because of the design of most sliding doors it is not always possible to stop air from leaking around the seals especially with age and heavy usage.
Damage to the door itself.
Test the door for the location of the leak.
This method is far from pretty and the insulated board can be expensive but it s effective.
Have a reputable sliding door contractor remove the door if it has not been damaged build a new frame and reinstall the door.
Be sure to tape thin sheets of plywood over the glass to protect the door from flying pieces of concrete.
Note that if the sliding glass door leak you described has already worked its way under any adjacent exterior siding you ll likely have to remove and reapply that siding as well in order to install the new material and repair the leaking sliding glass door but the extra effort will be well worth it the next time coastal winds blow rain your way.
I used this tape for sealing.
Do you have any leaking windows or doors.
Blocking the direct force of the wind from blowing against your sliding glass door helps considerably.
Use insulated foam board.
The amount of cold outdoor air leaking in through a just a small unsealed spot can be increased several times by the wind blowing against the door.
One of the easiest ways to block the wind is to build a covered windbreak around your door.
In this video i show you how i repaired a leak by replacing an incorrect capping job.
This allowed us to see the temperature of surfaces such as our sliding glass doors and where we had air leaks.
Damaged seals can increase your utility bills but with a good tuneup those sliding glass doors once again will become a great investment.
This handy tool will cost anywhere from 20 to a couple hundred dollars depending on the brand and quality.
Aim a garden water hose with a sprayer set on mist or low at the outside of the sliding door.
A sliding glass door is no better than the frame into which it is placed.