How to Install Solar House Numbers on Brick and Masonry Without Cracking Mortar

September 7, 2026☕ 5 min read

Install solar house numbers on brick without cracking mortar by marking the layout with the included positioning paper, drilling into the mortar joint instead of the brick face when the spacing allows, and seating masonry-rated anchors with the included screws until the ABS and PC housing is snug, not crushed. Keep the solar panel in daylight and the numerals in a 50-foot street view. Skip hammering, oversize bits, and adhesive as a brick plan. A cracked joint is a leak path; a cracked brick is a permanent scar.

Mortar joints are the repairable drill line

Brick is fired ceramic. A masonry bit in the face can spall the unit and leave a chip that will not weather in. Mortar is the sacrificial bed. When numeral spacing can land on joints, drill there so a future patch is grout, not a replacement brick.

That rule yields when joints do not match the plaque holes. Then the brick face needs a smaller pilot, a sharp masonry bit, and no hammer-drill on old, soft units. Stop if the bit walks. The guide to mounting solar house numbers on brick masonry is the broader brick hang; this page is the crack-avoidance sequence.

Tape the positioning paper, step to the curb, and confirm height above shrubs before any hole exists. Readability is listed at 50 feet. A perfectly drilled plaque behind a column is still a missed address.

Bits, anchors, and the included screws

The kit includes screws and positioning paper. Brick usually needs masonry-rated wall anchors sized to those screws; do not drive a wood screw into a raw hole and expect it to hold. Mark through the paper, drill only as deep as the anchor, and blow dust out so the plug seats.

Overtightening cracks mortar around the hole and warps the ABS and PC housing so the solar face tilts off the sky. Snug is the stop point: the plaque does not rock, and the brick does not powder. IP44 handles rain at the housing; a gaping, cracked joint around a fastener is still a water path into the wall.

Skip adhesive pads on dusty brick. Heat and lime dust let them go. Skip no-drill claims that ignore wind on a masonry elevation. If a mailbox is brick and the hang would fight the joint pattern, the brick mailbox solar plaque note is the neighboring warning.

Sun, sensor, and dust after the drill

Brick walls on the north side may never give a 6-8 hour charge window. A 600mAh Ni-MH pack still needs sufficient light for about 12 hours of illumination. If the only brick elevation is shaded, a mailbox or post with sky is the better install than a crack-free, dark plaque.

Masonry dust on the solar face and on the intelligent light sensor will fake a dim night. Wipe both after drilling. Keep porch lamps off the sensor so warm LED numerals actually come on at dusk.

Level across an uneven brick plane. A shim behind the housing is better than cranking a screw to pull a warped plaque flat. The housing should sit square to the street, not follow every bump in the wythe.

Where to put the hole on brick

| Target | Crack risk | Patch later | Choose when | | --- | --- | --- | --- | | Mortar joint | Lower on sound mortar | Regrout | Hole spacing can land on joints | | Brick face, sharp bit | Higher on old brick | Harder | Joints cannot match the plaque | | Hammer-drill on soft brick | Highest | Ugly | Avoid on historic or sand-struck units | | Adhesive only | None at drill | Failed hang | Not a wind plan | | Mailbox post instead | None on the wall | N/A | Shaded or hidden brick elevation |

A DIY masonry hang is still a zero-wire hang

Solar panels on the surface mean no electrician and no chase through brick. That is the point of a $0 DIY install once anchors are seated. Hardwired address lamps through masonry are a different, wet-location job. Keep this sequence to paper, mortar-aware holes, snug screws, and a dusk check after the first full charge.

Brick install without cracked mortar checklist

Frequently asked questions

Should every hole land in mortar?

When spacing allows, yes. If the plaque holes cannot hit joints, use a careful brick-face pilot instead of forcing a bad angle into the bed.

Do the included screws work in brick alone?

They need masonry-rated anchors sized to the screw. A wood screw in a raw brick hole will not hold.

Is a hammer-drill required?

Not on soft or historic brick. A sharp masonry bit at a controlled speed is the crack-avoidance default.

Can the plaque sit on uneven brick without shims?

Pulling it flat with screws cracks mortar and warps the housing. Shim so the solar face stays square.

Does IP44 protect a cracked joint?

No. IP44 rates the housing. A cracked mortar bed is still a wall leak path around the fastener.

Related reading

General brick mounting, mailbox brick pitfalls, and multi-surface positioning sit next to this mortar-safe sequence.

What to do next

Tape the positioning paper on the brick, check the curb view, and see whether the holes can land in mortar joints. Drill those joints with a sharp bit, seat masonry anchors for the included screws, and stop at snug. Wipe the dust, give the panel a 6-8 hour charge, and confirm the sensor brings the warm LED on at dusk.

Ready to shop?

Discover our products and find the perfect fit for you.

Shop now →