Prominently displayed house numbers on a home make your home safer because emergency service personnel, such as paramedics, police and firemen, can locate your home easier at a time when every minute counts. If your home has wood siding on the exterior, it's a simple matter to attach numbers with wood screws, but if your home's exterior is stucco, the process is a bit more involved. Stucco is essentially a blend comprised mostly of cement, and you will need special tools to install the numbers without damaging the finish.

Rough stucco surface
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Step 1

Hold the numbers in place on the stucco and mark the wall where the screws will be placed.

Step 2

Determine the depth needed for the drilled holes. The holes should be drilled 1/8-inch deeper than the depth of the screws that will be used to attach the numbers.

Step 3

Measure the required depth on the 1/4-inch drill bit and place a piece of masking tape around the bit at the correct depth. This will allow you to hit the correct depth with every drilled hole.

Step 4

Drill holes in the stucco using a hammer drill and the 1/4-inch bit. Make sure the drill bit is perpendicular to the wall and that you drill straight into the wall. If you do not own a hammer drill or have access to one, you can rent them at home improvement stores.

Step 5

Blow the drilling dust out of the holes with a blower, air compressor or turkey baster. Be careful not to get dust in your eyes.

Step 6

Squeeze silicone caulk into the screw holes. Do not apply so much caulk as it runs out of the hole.

Step 7

Place 1/4-inch plastic screw anchors in the drill holes and allow them to sit for a couple of hours for the caulk to dry.

Step 8

Attach the numbers to the house using stainless steel screws. Stainless steel screws will not rust, so you can avoid discoloration on your stucco.