Garage and shed slabs in Boise
A slab for a garage, shop or shed needs to be level, well-drained and thick enough for what will sit on it. The base underneath matters as much as the concrete itself.
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What goes into the quote
- Size and thickness
- Base preparation and compaction
- Reinforcement and any thickened edges
- Whether it needs to meet building permit requirements
How long: Usually 1–3 days of work, then about a week of curing before heavy loads.
Rough ranges for guidance, not quotes. Your contractor's quote is what counts.
Get a real quoteGood to know in Boise
Boise gets hot, dry summers and cold winters with plenty of nights that freeze and thaw again by afternoon.
Freeze-thaw is what wears concrete out here. Ask for an air-entrained mix and proper control joints, and seal it every few years.
Driveway approaches and anything in the street right-of-way in Ada County go through ACHD (Ada County Highway District), which needs its own approval and a permit before work starts. A good contractor handles that for you.
Common questions
Do I need a permit for a slab?
A slab for a detached garage or a larger shed often does. A small shed pad often doesn't. Check with your city or county building department.
How thick should a garage slab be?
Four inches is common, with thicker edges or more under heavy equipment.
How long before I can drive on a new driveway?
Usually about a week for a car, longer for anything heavy. Your contractor will tell you for your mix and the weather.
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