How to Lay a Brick Sill
Sills made of single brick pieces add an aesthetically pleasing accent to your windows. However, a brick sill can develop moisture problems without the correct slope or weep holes to promote proper drainage. Laying a brick sill, made of a single brick piece, properly takes a bit of time and work, but a few basic tools, like a brick hammer and chisel, should help you complete the task.
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Things You'll Need
- Brick hammer
- Brick chisel
- Trowel
- Mortar
- Bucket
- Carpenter's square
- Measuring tape
- Water
- Towel
- Stiff bristle brush
- Level
- Brick jointer
- Weep-hole wicks
- Brick sill piece
Instructions
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1
Use a measuring tape to measure the space from the outside of the brick wall to the window. Mark the appropriate measurement on the brick sill piece. Ensure the bottom of the sill extends beyond the brick wall's face by at least 1 inch.
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2
Position the brick piece on a work table. Measure and mark a 15-degree angle at the end of each side of the narrow face of the brick piece to allow it to fit up against the window.
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3
Position the sharp end of a brick chisel along 1 of the marked lines of the brick piece. Strike the opposite end of the chisel with a brick hammer until the end piece of the brick breaks off to form a 15-degree angle. Repeat this technique on the opposite end of the brick piece.
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4
Measure and mark every 16 inches across the flashing. Position weep-hole wicks horizontally along the marks. The wick ends should extend past the front piece of the flashing.
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5
Mix mortar in a bucket, according to the manufacturer's instructions. Use a trowel to apply a 1-inch-thick layer of mortar across the top of the flashing. Position the brick piece beneath the window. Ensure that the spacing of the brick on the sill piece matches the mortar-joint width on the brick wall. Check with a level to ensure the brick sill is even.
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6
Strike the mortar joints with a brick jointer to create a rounded surface to the joints. Use a broom to sweep away any excess mortar. Let the mortar dry fully. Wipe the sill with water and scrub it with a stiff bristle brush after the mortar has dried.
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Tips & Warnings
Use a carpenter's square to help you measure the 15-degree angled edges of the brick sill.
Always wear safety goggles and safety gloves when working with brick and hand tools to avoid injury.
References
Resources
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