How To Install A Surface Mount Electrical Box?

Surface mount junction boxes are ideal for renovations, retrofits, and locations where cutting into the wall is not possible or not desired. Installation is quick, clean, and non-invasive, making it perfect for concrete walls, rental spaces, or temporary setups.

What Is A Surface Mount Box？

A surface mounting box is used to house and protect electrical wiring on wall surfaces without embedding into the wall. It simplifies installation, especially in places where cutting into walls is impractical. Commonly used in factories, warehouses, temporary buildings, and old wiring renovations, it offers quick access for maintenance and flexible wiring layouts.

Flush Mount VS. Surface Mount Box

Feature	Flush Mount Box	Surface Mount Box
Installation Style	Installed inside the wall (recessed)	Mounted on the surface of the wall
Appearance	Sleek and low-profile; blends with the wall	More visible; protrudes from the wall surface
Space Requirement	Requires wall cavity or cut-out	No need to cut into walls; ideal for solid walls
Aesthetic Appeal	More modern and seamless look	May look more industrial or utilitarian
Ease of Installation	Requires more labor, tools, and wall modification	Quick and easy to install; great for retrofits
Best Use Cases	New constructions, renovations with wall access	Temporary setups, concrete walls, or surface wiring
Maintenance & Access	Slightly harder to access for future modifications	Easy to access and maintain
Cost	Generally higher due to complex installation	Usually lower due to simpler installation
Durability Consideration	Protected inside the wall	Needs durable materials to withstand external impact

Unlike flush mount boxes, which are recessed into the wall, surface mounting boxes are installed directly on the wall surface. This makes them easier to install and modify, with no need for wall cutting. While flush mount boxes offer a cleaner look, surface mount boxes provide faster access, are ideal for exposed wiring, and are commonly used in industrial, retrofit, or temporary setups.

Tools and Materials Needed For Surface Mounting Box Installation

Category	Items
Tools Needed	- Screwdriver
	- Electric drill
	- Level
	- Cable cutter or wire stripper
	- Pencil or marker
	Optional: Hammer, measuring tape
Materials Needed	- Surface mounting box
	- Mounting screws and wall plugs
	- Electrical conduit (PVC or metal)
	- Waterproof gaskets or rubber pads (for industrial/outdoor use)
Safety Tips	- Turn off power at the circuit breaker before starting
	- Use a voltage tester to confirm no live current
	- Wear insulated gloves and safety glasses
	- Follow local electrical codes and consult a licensed electrician if unsure