Garage Pad and Slab Fall Checklist Before Freeze-Up
Updated October 2026
Before freeze-up, clear and clean the slab, look at every crack, make sure water runs off the pad instead of sitting on it or under it, and plan how you will get grip without rock salt. Do it on a dry day in October or November, while you can still see the surface and the ground is not frozen. Ice does its damage when water that has soaked into the concrete freezes, so the job is to keep water out and moving away. a slab that has sunk, heaved or opened wide cracks is worth a written quote.
A garage pad or shed pad does its hardest work in winter. Water gets into the surface, freezes, thaws and freezes again, and salt from parked cars makes it worse. None of that is a reason to worry in October. It is a reason to spend an afternoon on the slab while the weather still helps.
This checklist is for a slab that is already in the ground. If your concrete was poured this fall, read protecting concrete poured this fall through its first winter first.
Clear and clean it
Sweep off leaves, grit and soil. A dirty slab hides the cracks you came to find.
Let the slab dry fully after cleaning.
Walk it and mark the cracks
Walk the pad slowly and look at each crack.
- Hairline cracks are common and often harmless on a slab that is still flat and solid.
- Cracks with one side higher than the other, or cracks that reopen after you fill them, point to movement under the slab.
- Panels that have sunk or heaved are signs the base has moved. Six signs a garage floor needs replacing, not repairing explains how to tell.
Take a photo of each crack with a coin beside it. In spring, you can compare.
Check where the water goes
Water is what freezes, so water is the thing to manage. Walk the pad on a day with rain, or pour a bucket of water on it, and watch where it goes.
- Slope. Water should run off the pad and away from the building. A garage floor should slope gently toward the door so snowmelt off the car finds its way out.
- Downspouts. Aim them off the slab. A downspout that empties onto concrete soaks the same spot every time and freezes it overnight.
- Standing water. A low spot that holds a puddle will hold ice. Note it for a repair quote.
Decide on a sealer
A sealer slows water and salt from soaking into an older slab, and it is usually reapplied every few years. It goes on a clean, dry surface. Why salt hurts concrete and what a sealer does are covered in protecting your concrete from winter salt damage.
Plan for grip without salt
Salt soaks into concrete and worsens freeze-thaw damage. Decide now how you will get grip:
- Keep a bucket of sand by the door.
- Shovel early, so less snow melts and refreezes on the slab.
- Push plowed snow away from the pad, not onto it.
When a fall check says call someone
Call for a free written quote if you see a sunk or heaved panel, a wide crack that keeps reopening, a floor that pools water, or surface damage that is getting worse. Fall is a good time to ask: a crew can look at the slab while it is dry, and repairs can be planned instead of rushed in spring.
For a pad that is beyond repair, see how we build concrete slabs and garage pads: a compacted Granular A base, reinforcement matched to the load, and 32 MPa air-entrained concrete for garage floors. If the surface is flaking or cratered but the slab is sound, concrete repair and resurfacing may be the better fix. Every quote is free and in writing, and our labour carries a lifetime warranty.
When should I do my garage pad fall check?
On a dry day in October or November, before the ground freezes and before snow hides the surface. Cold, wet leaves and early snow make it hard to see cracks and low spots.
Should I seal an existing garage pad or slab in the fall?
A sealer can help an older slab, and it goes onto a clean, dry surface. Concrete poured this year waits about 28 days before it is sealed.
Can I use rock salt on my garage pad?
It is best to avoid it. Salt soaks into concrete and makes freeze-thaw damage worse, and a new slab is the most at risk. Shovel early and use sand for grip.
Do I need a new slab if the pad has cracks?
Not by itself. Hairline cracks are common in concrete and often harmless on a slab that is still flat and solid. A panel that has sunk or heaved, or a wide crack that keeps reopening, points to movement under the slab and is worth a free written quote.
Does the pad need to slope?
Yes. Water should run off the pad and away from the building, and a garage floor should slope gently toward the door so melt from the car finds its way out.