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Wi-Fi Killers: What Materials Are Blocking Your Signal?

By Network Cabling Elite Team  |  February 19, 2026

Wi-Fi Killers: What Materials Are Blocking Your Signal?

The Physical Barriers to Internet

Wi-Fi signals are radio waves, and like any wave, they struggle to pass through certain materials. If your router is hidden in a cabinet or behind a wall, you are losing speed.

The Worst Offenders

  • Metal: The #1 Wi-Fi killer. Steel beams and metal lath in older plaster walls act as a Faraday cage.
  • Concrete & Brick: These dense materials absorb signal rapidly.
  • Mirrors & Glass: The silver coating on mirrors reflects signal back, creating "multipath" interference.
  • Water: Large fish tanks or radiant floor heating can dampen signal significantly.

If your home or office is built with these materials, a standard router won't cut it. We specialize in "fishing" cables through these difficult barriers to place Access Points where they actually work.


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Frequently Asked Questions

What is structured cabling?
Structured cabling is a standardized architecture for your business's telecommunications infrastructure. Instead of a messy, tangled web of point-to-point wires, structured cabling uses patch panels, organized trunks, and standardized Cat6/Fiber drops to provide a clean, highly reliable, and easily scalable network for data, voice, and video.
Should I install Cat6 or Cat6a cable for my office?
For most standard commercial offices, Cat6 is sufficient, supporting Gigabit speeds up to 328 feet. However, if you are future-proofing a medical facility, enterprise server room, or require 10-Gigabit speeds across longer distances, Cat6a is the recommended standard due to its higher bandwidth and thicker shielding against crosstalk.
Do you provide fiber optic installation?
Yes. We specialize in fiber optic backbone installations. Fiber is essential for linking network closets (MDF to IDFs) across large campus environments or multi-story buildings, as it bypasses the 328-foot distance limitation of traditional copper ethernet while providing virtually unlimited bandwidth.
How much does a network drop typically cost?
The cost of a network drop typically ranges from $150 to $300+ per run. The final price depends on the cable category (Cat5e, Cat6, Cat6a), the environment (drop ceilings vs. hard drywall), and whether commercial fire codes require the use of specialized Plenum-rated (CMP) cabling.
Do you mount and install Wi-Fi access points and security cameras?
Absolutely. Alongside running the low-voltage cabling, our technicians are highly experienced in mounting and terminating hardware, including PoE (Power over Ethernet) security cameras, wireless access points (WAPs), and building out complete server racks and patch panels.

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