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How to Add Blocking Behind Drywall

Price

Free

Duration

45–90 minutes

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About the Course

🧱 How to Add Blocking Behind Drywall

Install solid backing inside your wall for things like shelves, TVs, or towel bars — even after the drywall is already up.

🧰 Tools & Materials Needed:

  • Stud finder

  • Drill or impact driver

  • 3” wood screws

  • Drywall saw or oscillating multi-tool

  • Measuring tape & pencil

  • 2x4 or plywood blocking piece

  • Wood glue or construction adhesive (optional)

  • Drywall patch material (piece of drywall or patch kit)

  • Joint compound, putty knife, sandpaper

🕒 Estimated Time: 45–90 minutes

🔨 Step-by-Step Instructions:

1. Mark the Area for Blocking

  • Use a stud finder to locate the studs near your target area

  • Mark your desired mounting height (e.g., where a TV or shelf will go)

  • Lightly draw a square or rectangle cutout large enough to fit your hand and blocking

2. Cut Into the Drywall

  • Carefully cut the marked opening using a drywall saw or multi-tool

  • Save the piece if possible for patching later

  • Vacuum the edges to remove any dust

3. Measure and Prepare Your Blocking

  • Cut a 2x4 or piece of plywood to fit horizontally between studs

  • For heavy loads (like TVs), use a full 2x4

  • Add glue to the ends (optional) and secure into the adjacent studs with screws

4. Secure the Blocking in Place

  • Insert the blocking into the wall cavity

  • Use screws through the existing studs at each end to secure it

  • Double-check that it sits flush with the back of the drywall

5. Patch the Wall

  • Replace your drywall piece or use a new patch

  • Apply joint compound around edges, smooth it out with a putty knife

  • Let dry, sand, and apply a second coat if needed

  • Prime and paint to match the surrounding wall

✅ Pro Tips:

  • Use painter’s tape around your cut area to protect the finish

  • Always mount items directly to blocking or studs — drywall alone won’t hold long

  • If this seems like a big job, consider pre-installing blocking during your next reno project

📸 Bonus Tip Video:

[🎥 Watch: How We Add Hidden Blocking During Renovations]Follow us on Instagram: @rgwallsottawa

❓Need Help or Want It Done Professionally?

We can add custom wall supports, install mounts, or prep your space during renos.

Your Instructor

R&G Walls

R&G Walls

Install solid backing inside your wall for things like shelves, TVs, or towel bars — even after the drywall is already up.

Ready to Start Your Project?

We’re here to help with your next renovation or repair. Reach out for a free quote — fast replies guaranteed.

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