Building a partition wall yourself costs between €150 and €600 in materials, depending on the size and type of wall. Hiring a contractor will set you back €600 to €1,800 including labor. It’s one of the most rewarding DIY projects you can tackle: in a single weekend, you’ll have an extra room. In this article, you’ll learn which type of partition wall best suits your situation, what it costs, and how to build a solid wall step by step — including soundproofing.
Which Type of Partition Wall Is Right for You?
There are three common ways to build a partition wall. The choice depends on your budget, the desired sound insulation, and what you plan to hang on the wall.
Metal Stud Wall (Most Popular)
A metal stud wall consists of a frame made from thin steel profiles (C-studs and U-tracks) with drywall sheets on both sides. This is by far the most popular method and is also used as standard by professional builders.
Pros:
– Lightweight (approx. 5 lbs/sq ft) — suitable for any floor
– Quick to install (1 day for an average wall)
– Profiles are always straight (no warping)
– Easy to run wiring and pipes through
Cons:
– Less load-bearing capacity for heavy items (unless reinforced)
– Sounds hollow when you knock on it (without insulation)
Wood Frame
A wall built with wooden studs (2×3 or 2×4 lumber) with drywall sheets. A more traditional method, but still perfectly viable.
Pros:
– Easy to screw and attach things into the wood
– Feels slightly more solid
– Widely available at any hardware store
Cons:
– Wood can be warped or may warp due to moisture
– Slightly heavier than metal stud
– More work to run wiring through
Aerated Concrete Blocks (AAC Blocks)
Blocks of approximately 24×16 inches (thickness 3 or 4 inches) that you stack with special adhesive. Used for more solid walls, for example between a bathroom and bedroom.
Pros:
– Solid — great for heavy mounting points
– Better sound insulation (without extra measures)
– Moisture-resistant (suitable for wet rooms)
Cons:
– Heavy (approx. 10-15 lbs/sq ft) — floor must be able to support it
– More mess (dust when cutting)
– Needs plastering after installation
– Slower than metal stud
Comparison at a Glance
| Property | Metal Stud | Wood Frame | Aerated Concrete Blocks |
|---|---|---|---|
| Weight per m² | ~25 kg | ~30 kg | 50-75 kg |
| Material cost per m² | €20 – €35 | €18 – €30 | €25 – €40 |
| Installation time (wall 6 m²) | 4-6 hours | 5-7 hours | 6-10 hours |
| Sound insulation (without extras) | Moderate | Moderate | Good |
| Hanging heavy items | With anchors/reinforcement | Directly into wood | Directly into block |
| Difficulty level | Easy | Easy | Medium |
| Finishing required | Tape and mud joints | Tape and mud joints | Full plastering |
Recommendation: for most partition walls in living spaces, metal stud is the best choice. It’s lightweight, fast, and affordable. Want a wall between a bathroom and bedroom? Consider aerated concrete. The rest of this article focuses on the metal stud method — by far the most popular option.
What Does It Cost to Build a Partition Wall? DIY vs Contractor
Material Costs (metal stud wall, 6 m² — for example 3 meters wide, 2 meters tall)
| Material | Quantity | Price |
|---|---|---|
| U-tracks (floor/ceiling, 50 mm) | 6 meters | €10 – €15 |
| C-studs (vertical, 50 mm) | 6 pieces (2.6 m each) | €20 – €30 |
| Drywall sheets (260×60 cm, 12.5 mm) | 10 sheets (2 sides) | €50 – €80 |
| Mineral wool insulation (45 mm) | 6 m² | €25 – €40 |
| Self-tapping screws (3.5×25 mm) | 200 pieces | €5 – €8 |
| Anchors + screws (track fastening) | 20 pieces | €5 – €8 |
| Joint tape (paper or self-adhesive) | 1 roll (25 m) | €5 – €10 |
| Joint compound (ready-mixed) | 5 kg | €8 – €15 |
| Acrylic caulk | 1 tube | €3 – €5 |
| Total materials | €131 – €211 |
Total Costs: DIY vs Contractor
| Wall type | Dimensions | DIY (materials) | Contractor (incl. labor) |
|---|---|---|---|
| Simple partition wall | 3 x 2.5 m | €150 – €250 | €600 – €900 |
| Partition wall with door | 3 x 2.5 m | €250 – €450 | €800 – €1,400 |
| Large partition wall | 5 x 2.5 m | €300 – €500 | €1,000 – €1,600 |
| Partition wall with soundproofing | 3 x 2.5 m | €200 – €350 | €700 – €1,200 |
DIY savings: 55-70%. A partition wall is inexpensive in terms of materials — the difference is entirely in labor costs. And it’s a project that even a beginning DIYer can handle perfectly well.
What Do You Need?
Tools
| Tool | Purpose |
|---|---|
| Cordless drill + bit set | Screwing drywall sheets and profiles |
| Spirit level (4 ft / 120 cm) | Leveling profiles |
| Plumb bob or laser level | Vertical alignment |
| Tin snips or aviation snips | Cutting profiles to size |
| Utility knife | Cutting drywall sheets to size |
| Tape measure + pencil | Measuring and marking |
| Caulk gun | Applying acrylic caulk |
| Taping knife (wide, 6-8 inches) | Mudding joints |
| Sanding block or sanding sponge | Smoothing joints |
Materials
See the materials table above. Order 10% extra drywall sheets as a cutting waste margin.
Step-by-Step: Building a Partition Wall with Metal Studs
Step 1: Mark Out the Position
Determine where the wall will go. Measure from an existing wall and mark the position on the floor with a chalk line or pencil.
- Draw a line on the floor where the center of the wall will be
- Use a plumb bob or laser level to extend the line to the ceiling
- Mark the position on the side walls — vertical lines from floor to ceiling
Check with a spirit level that the line is perpendicular to the existing wall. A few millimeters off at the floor becomes centimeters of difference at the ceiling.
Tip: if the wall will include a door, determine the position and width of the door opening now. Standard door sizes are 28, 30, 32, or 34 inches wide. Keep the rough opening 1 cm wider than the door frame.
Step 2: Attach the U-Tracks (Floor and Ceiling)
The U-tracks form the bottom and top rails into which the studs click.
- Cut the U-track to length with tin snips
- Apply a strip of acoustic sealing tape (felt strip) to the underside of the track — this prevents sound transmission through the floor and ceiling
- Drill the track to the floor with anchors and screws, every 50-60 cm
- Repeat for the ceiling track — make sure it’s directly above the floor track (check with a plumb bob)
For a concrete floor: use hammer-in anchors (6 mm). For a wooden floor: screw directly into the joists or use sufficiently long wood screws.
Step 3: Install the C-Studs (Vertical)
The C-studs are the vertical members that form the frame.
- Cut the C-studs to length: measure the height from floor to ceiling and subtract 10 mm (for clearance)
- Place the first stud against the side wall and screw it to the wall (anchors + screws, every 60 cm)
- Place the remaining studs at 60 cm on-center spacing — this corresponds exactly to the width of standard drywall sheets
- Click the studs into the U-tracks and secure them with self-tapping screws (1 screw at top, 1 at bottom)
For a door opening: place double studs on each side of the opening (two C-studs back-to-back). Create a horizontal header above the door opening at the correct height (top of door frame + 10 mm).
Step 4: Install the Insulation
Fill the space between the studs with mineral wool (rock wool or fiberglass). This is optional but strongly recommended — it makes a world of difference in sound insulation.
- Cut the insulation to size — slightly wider than the space between the studs so it fits snugly
- Push the insulation between the studs — it should fit tightly but not be compressed
- Fill the entire wall — leave no gaps, because sound finds the weakest point
Step 5: Attach the Drywall (First Side)
- Cut the drywall sheets to size with a utility knife: score the paper layer, snap the sheet, cut through the back
- Leave 10 mm clearance from the floor — use a spacer (piece of wood or a tile spacer)
- Screw the sheet onto the C-studs with drywall screws (3.5×25 mm), every 25 cm
- Drive the screw heads just slightly below the surface — not through the paper, but just under the surface
- Work from the center toward the edges to prevent warping
The sheets must be placed with staggered joints: start the first row with a full sheet, start the second row with a half sheet. This prevents continuous seams.
Step 6: Attach the Drywall (Second Side)
Repeat step 5 on the other side of the wall. Make sure the seams on the second side don’t fall in the same place as those on the first side — offset by at least 40 cm.
Step 7: Finish the Joints
- Apply joint tape over all seams between the drywall sheets
- Spread a first coat of joint compound with a wide taping knife (6 inches) — fully cover the joint tape
- Let it dry (minimum 12 hours, preferably 24 hours)
- Apply a second coat with an even wider knife (8 inches) — spread the compound over a wider area so the seam becomes invisible
- Let it dry again and lightly sand with fine sandpaper (120-150 grit)
Don’t forget to mud the screw heads — two thin coats, letting each one dry in between.
Step 8: Caulk the Edges
Apply acrylic caulk at the junction of the wall with the floor, ceiling, and side walls. This creates a neat, flexible joint that moves with the house. Smooth with a wet finger or a caulking tool.
Step 9: Prime and Paint
- Apply a primer coat to the entire wall — this evens out the absorption of drywall and compound
- Lightly sand after drying
- Apply two coats of wall paint — done
Soundproofing: From Hollow to Quiet
A standard metal stud wall with single drywall and no insulation dampens about 35 dB. That’s not much — you can easily hear a conversation on the other side. If you want serious sound insulation, you need to invest in the wall assembly.
| Wall Assembly | Sound Insulation (Rw) | Extra Cost per m² |
|---|---|---|
| Single drywall, no insulation | ~35 dB | €0 |
| Single drywall + mineral wool | ~42 dB | €4 – €7 |
| Double drywall + mineral wool | ~48 dB | €12 – €18 |
| Double drywall + mineral wool + separated frame | ~55 dB | €25 – €35 |
Tips for maximum soundproofing:
- Mineral wool is a must — the difference compared to a hollow wall is enormous (7 dB extra)
- Double drywall on both sides gives another 6 dB. Stagger the second layer relative to the first
- Separated frame (two separate rows of studs that don’t touch each other) prevents sound vibrations through the metal — the best result, but the wall becomes 15 cm thicker
- Acoustic sealing strips on all profiles that touch the floor, wall, and ceiling — prevents flanking transmission
- Caulk all edges with acrylic caulk — sound leaks through the smallest gaps
For a bedroom or study partition wall, the assembly “double drywall + mineral wool” (48 dB) is usually more than sufficient.
Do You Need a Permit? Rules for Partition Walls
In most cases, you do not need a building permit for a partition wall. Installing a non-load-bearing interior wall is generally considered a minor alteration, provided:
- The wall is non-load-bearing (doesn’t support the weight of floors or roof above)
- The wall is placed inside the existing building
- You don’t modify any load-bearing structure to place the wall
- The wall doesn’t affect fire safety (escape routes, fire compartmentalization)
Note for renters: you always need permission from your landlord. Many landlords require that you remove the wall when you move out.
Note for condos/apartments: check your homeowners association rules. Some HOAs require notice or approval, even for non-load-bearing walls — particularly regarding noise insulation requirements.
When you do need a permit:
– If you’re removing a load-bearing wall and placing a new partition
– If the wall affects fire compartmentalization (in apartment buildings)
– If you’re placing the wall as part of a change of use (e.g., splitting a dwelling into multiple units)
When in doubt, check with your local building department or municipality.
Common Mistakes When Building a Partition Wall
-
Not checking whether the floor and ceiling are level. They almost never are. Measure the height at each stud position and cut to fit. Don’t assume all studs will be the same length.
-
Not maintaining on-center spacing. If the studs aren’t exactly 60 cm on-center, the edges of your drywall sheets won’t land on a stud. Then you can’t screw them in properly.
-
Driving screws too deep. If the screw tears through the paper layer of the drywall, it loses its holding power. Just below the surface is enough.
-
Skipping insulation. “I’ll do that later” — no, you won’t. Once the wall is closed up, you can’t add insulation anymore. Do it right the first time.
-
Not using sealing strips on the profiles. Without strips, every footstep and sound is transmitted through the floor and ceiling into the wall. Costs almost nothing, makes a huge difference.
-
Not staggering the drywall sheets. Continuous seams are guaranteed to crack. Staggering prevents cracks and makes the wall stronger.
-
Not allowing enough drying time for the joints. Impatience leads to visible seams. Let each coat of joint compound dry for at least 12 hours before applying the next coat.
-
Not planning door reinforcements. If there’s a door in the wall, you need double studs next to the opening. Single studs will flex under the weight of a door.
Frequently Asked Questions
How long does it take to build a partition wall?
An average partition wall (3 meters wide, 2.5 meters tall) with metal studs can be built in 1 day — frame, insulation, and drywall. Add 1-2 days for taping, drying, sanding, and painting. Total: a weekend.
Can I build a partition wall on a wooden floor?
Yes. A metal stud wall weighs only about 25 kg per m². That’s no problem for a wooden floor. Do screw the U-track into the joists (not just the floorboards) for a solid base. Use a stud finder to locate the joists.
How do I hang heavy items on a metal stud wall?
For light items (painting, clock): use drywall anchors. For medium-weight items (bookshelf up to 15 kg): use toggle bolts or hollow wall anchors. For heavy items (TV, wall-hung toilet, upper cabinets): attach a wooden backer or plywood panel between the studs before you install the drywall. Then screw through the drywall into the wood.
Can I run electrical wiring and plumbing through a partition wall?
Electrical: yes, that works fine. Run the cables through the holes in the C-studs before you close up the second side. Use flexible conduit. Have it connected by a licensed electrician if you don’t have experience. Plumbing: technically possible but more complex. Account for the thickness of the wall (minimum 70 mm profile for standard water lines).
What’s better: metal stud or wood frame?
Metal stud in 9 out of 10 cases. The profiles are always straight, lightweight, fire-retardant, and quicker to install. A wood frame is only worth considering if you specifically need the strength of wood for heavy attachments — but even then, you can incorporate wooden reinforcements into a metal stud frame.
Can I remove a partition wall later?
Yes, that’s one of the advantages of a metal stud wall. Screws out, drywall off, profiles unscrewed — in half a day, the wall is gone. You’ll have screw holes left in the floor, ceiling, and side walls, but those are easy to fill. With aerated concrete blocks, removal is much more work (and mess).
Want to learn more about DIY and home improvement? Check out the building plans and guides at fredsdiyplans.com — more than 10,000 DIYers have gone before you.