If the driveway slopes downward toward the garage instead of away from it the only way to keep the rainwater out is to channel it away before it can run under the door.
How to channel water away to garage door.
Excess water is bad enough.
Check your driveway to see if it slopes towards your garage and not away from it.
During rains if the bottom area of the garage door is not sealed or has a damaged rubber gasket on it then water may blow or run under the garage door into the garage.
This water collects underground and becomes trapped when there s poor drainage.
In order to build a trench drain you need to cut a narrow trench in the concrete from one end to the other.
Insert a drain in front of the garage to soak away excess water raise the concrete towards the garage door to create a lip install a sandless sandbag such as the osmo flood barrier.
The trench drain essentially keeps rainwater from draining through the door and channels it elsewhere.
It catches the water running down the slope and then channels it away from the door to someplace where you have adequate drainage.
The water is just going to run down the slope straight into your garage.
The solution for stopping water coming under your garage door are.
You will want to dig six inches across and two feet down.
This is something that has to be done by a professional.
The best way to do this is.
Vehicle door area moisture running into the garage.
The frozen water pushes against your foundation and paved surfaces causing heaving cracking and structural damage.
Then you insert a steel or pvc u shaped channel in the trench.
Rubber gasket seal missing or repair needed.
Because this is drainage for your garage you will want to position your trench where the water runs off of the roof onto the ground.
But when it freezes and expands the potential for damage increases.
It is not unusual for gaskets on the bottom of garage doors to be worn or damaged.
Should you hire a professional.
If this is the case installing a trench drain can help channel water away before it reaches your garage door.
Step 1 dig a trench for your drain system with a duckbill shovel square point spade.