How to Run Ethernet Cable Through Old Plaster Walls

How to Run Ethernet Cable Through Old Plaster Walls

Running ethernet cable through the walls of your home allows you to connect devices like computers, smart TVs, and games consoles directly to your router for faster and more reliable internet access. However, if your home has old plaster walls, installing ethernet can be tricky. Here's how to run ethernet cable through old plaster successfully.

Assess Your Plaster Walls

Old plaster walls are quite different from modern drywall. Plaster is a building material made from lime, sand, and water that was applied wet and allowed to dry into a solid, durable surface.

Before running cable, you'll want to assess the current state of your plaster walls:

Understanding the condition of your walls will inform the best way to proceed. Thick, intact plaster may be hardy enough for direct cable insertion in some spots. But delicate or damaged plaster will require more care.

Gather the Right Tools

Running ethernet cable in plaster requires some specialized tools:

The right tools do cost more but will save money and mess in the long run.

Select an Installation Method

You have two main options for installing ethernet cable in plaster:

1. Fishing Inside the Wall Cavity

This involves drilling small holes to insert a fish tape into the cavity between walls. The fish tape is then used to pull cables through the cavity to each outlet.



2. Running Exposed Conduit on the Surface

This entails installing plastic conduit tubing externally and threading cable through. The conduit neatly contains and protects the cables.



Consider your goals, skill level, and wall condition when choosing an approach. Calling in a professional may be wise for valuable historic plaster.

Cut Openings with Care

When cutting open plaster, take precautions to minimize crumbling and cracking:

Focus on quality over speed. Rushed drilling risks chunks breaking loose or cracks forming, creating more work.

Pull Cables Gradually

When fishing cables through the cavity:

Rushing this step risks cables snapping or plaster around openings crumbling from the tension. Take it slow.

Patch Openings Properly

Fill any openings with plaster patching compound, taking care to:

Proper patching maintains the look and integrity of your walls. Avoid quick-drying spackle which can shrink and crack.

With care, patience, and the right tools, you can successfully run ethernet cable to bring your old plaster walls into the modern digital age. Just take it slowly and minimize disruption to preserve their historic beauty.