Set Shower Base in Concrete — Backfill and Pour Concrete
Part of project
How to Rough-In Plumbing for a Basement Bathroom · Step 5 of 7
In this video
The wet concrete is poured onto the floor in the shower area using a makeshift chute made from a piece of metal flashing. The concrete is spread out to cover the entire footprint of the shower base. The shower base is then carefully lowered into the wet concrete. The installer pushes it down to ensure it is fully bedded and uses a level to confirm it is perfectly flat and sloped correctly towards the drain. He taps on the base to check for hollow spots, confirming it is solidly supported everywhere.
Goal: Install Shower Base
- Work quickly once the concrete is poured, as it will begin to set. Ensure the shower drain is covered to prevent concrete from falling in.
Used in this video
- Metal Flashing/Chute (Material: Metal) · optional — Directing the flow of concrete into hard-to-reach areas.
- Level (Tool Type: Measuring Tools) — Ensuring the shower base is perfectly level after being set in the concrete.
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FAQs
How difficult is roughing in basement bathroom plumbing for a DIYer, and how long does it typically take?
This project is rated intermediate due to the need for precise measurements, concrete work, and understanding plumbing codes. For an experienced DIYer, it can take 3-5 full days of work, not including permit acquisition and inspection wait times. Beginners should consider professional help for critical steps like concrete cutting and main line tie-ins.
What permits do I need, and how do I ensure my rough-in plumbing passes inspection?
You will almost certainly need a plumbing permit and possibly a building permit. Contact your local building department early in the planning phase to understand all requirements, necessary inspections (like the rough-in inspection), and specific code regulations for pipe sizing, slope, and venting to avoid costly rework.
What's the best way to break up the concrete floor, and what safety precautions should I take?
A demolition hammer or electric jackhammer is highly recommended for efficiency, which can often be rented. Wear heavy-duty work gloves, steel-toed boots, eye protection, hearing protection, and a dust mask to protect against concrete dust and flying debris. Be mindful of existing utility lines marked during the planning phase.
What are the most common mistakes when installing the underground DWV pipes, and how can I avoid them?
Common mistakes include incorrect pipe slope, inadequate solvent welding, and insufficient depth for drain lines. Ensure a consistent slope of at least 1/4 inch per foot for proper drainage, use proper primer and cement for strong, leak-free joints, and confirm all pipes are securely bedded in gravel to prevent shifting.
Set Shower Base in Concrete — Backfill and Pour Concrete
Part of project
How to Rough-In Plumbing for a Basement Bathroom · Step 5 of 7
In this video
The wet concrete is poured onto the floor in the shower area using a makeshift chute made from a piece of metal flashing. The concrete is spread out to cover the entire footprint of the shower base. The shower base is then carefully lowered into the wet concrete. The installer pushes it down to ensure it is fully bedded and uses a level to confirm it is perfectly flat and sloped correctly towards the drain. He taps on the base to check for hollow spots, confirming it is solidly supported everywhere.
Goal: Install Shower Base
- Work quickly once the concrete is poured, as it will begin to set. Ensure the shower drain is covered to prevent concrete from falling in.
Used in this video
- Metal Flashing/Chute (Material: Metal) · optional — Directing the flow of concrete into hard-to-reach areas.
- Level (Tool Type: Measuring Tools) — Ensuring the shower base is perfectly level after being set in the concrete.
Frequently Asked Questions
How difficult is roughing in basement bathroom plumbing for a DIYer, and how long does it typically take?
This project is rated intermediate due to the need for precise measurements, concrete work, and understanding plumbing codes. For an experienced DIYer, it can take 3-5 full days of work, not including permit acquisition and inspection wait times. Beginners should consider professional help for critical steps like concrete cutting and main line tie-ins.
What permits do I need, and how do I ensure my rough-in plumbing passes inspection?
You will almost certainly need a plumbing permit and possibly a building permit. Contact your local building department early in the planning phase to understand all requirements, necessary inspections (like the rough-in inspection), and specific code regulations for pipe sizing, slope, and venting to avoid costly rework.
What's the best way to break up the concrete floor, and what safety precautions should I take?
A demolition hammer or electric jackhammer is highly recommended for efficiency, which can often be rented. Wear heavy-duty work gloves, steel-toed boots, eye protection, hearing protection, and a dust mask to protect against concrete dust and flying debris. Be mindful of existing utility lines marked during the planning phase.
What are the most common mistakes when installing the underground DWV pipes, and how can I avoid them?
Common mistakes include incorrect pipe slope, inadequate solvent welding, and insufficient depth for drain lines. Ensure a consistent slope of at least 1/4 inch per foot for proper drainage, use proper primer and cement for strong, leak-free joints, and confirm all pipes are securely bedded in gravel to prevent shifting.