Ask your builder if they plan on a garage door threshold.
A garage door threshold creates a small raised lip behind the garage door that helps keep wind-driven rain from making its way into your garage.
It’s a small detail that’s a whole lot easier to get right during construction.
Ask About It Before the Garage Slab Is Poured
I’d bring this up with your builder before concrete.
You want to know how they’re planning the transition between the driveway and garage slab and where the garage door will actually seal.
The goal is simple: water should want to go away from your garage, not into it.
Check the Slope Too
The threshold is only part of the equation.
I’d also make sure the driveway and concrete immediately outside the garage are sloped so water drains away from the opening.
A good threshold can help with wind-driven rain, but you don’t want water constantly collecting against the garage door in the first place.
Don’t Forget the Door Seals
Once the garage door is installed, look at the bottom seal too.
You want it making consistent contact across the opening without obvious gaps.
I’d check the weatherstripping along the sides and top of the garage door at the same time. Those little gaps are easy to adjust so the door sits tight against the weatherstripping.
Test It After a Heavy Rain
This one costs you nothing.
After you get a good rain, go look at the garage door.
Is water getting underneath or is it pooling near one corner? Are there wet spots along the inside edge?
I’d rather catch that while your builder is still finishing the house than six months after you move in.
Avoid the Rubber Strip Later
If water starts coming under your garage door after move-in, one common fix is adding a rubber threshold strip to the finished concrete.
They can work.
I’d just rather have the garage entrance planned correctly from the beginning than glue a big rubber strip across the floor later.
This is a tiny detail, but that’s exactly the kind of stuff that gets missed during a build.
This is exactly why I created the Ultimate Home Building Checklist. There are hundreds of little decisions like this that are much easier to deal with during construction than after you move in.
