Garden fence
Balcony Privacy Panel
DIY blueprint for Balcony Privacy Panel.
Dimensions
Width (W)
1200mm
Depth (D)
40mm
Height (H)
1500mm
Cut list
Tools you'll need
- ✓
Measuring tape (5m or longer)
Used for measuring each component.
- ✓
Pencil and carpenter's square
Used for marking lines and checking right angles.
- ✓
Saw
Use home center cutting service recommended.
- ✓
Electric screwdriver
Impact driver improves work efficiency.
- ✓
Sandpaper
Prepare #120 and #240 grit.
- ✓
Level
Essential for checking level during assembly.
- ✓
Clamps (2 or more)
Used for temporary fixation when joining parts.
- ✓
Brush and paint tray
Used for applying wood preservative.
Materials
Post (4x4 lumber)
89×89×2100mm
Includes 600mm to be buried underground.
2 本
Stainless steel coarse-thread screw 75mm
75mm
102 本
Mortar (for fixing posts)
Quick-setting type
2 袋
Outdoor wood preservative
Such as Xyladecor
2 缶
Build steps
- 1
Confirm installation location and property boundaries
≈ 30 minMeasure the planned installation line for the balcony privacy panel (1200×40×1500mm). Clearly identify property boundaries, confirm distances to neighboring houses, existing structures, and underground utilities (pipes, wiring).
MeasureW 1200 mmMeasureSTEP 1 / 9Tip
- Stay at least 50mm inside property boundaries for safety to prevent boundary disputes.
- Confirm locations of underground water and gas pipes with local authorities beforehand to prevent accidents when digging post holes.
- Notify neighbors in advance to explain noise and traffic impacts during construction.
Watch out
- Misunderstanding boundaries can lead to disputes with neighbors; verify survey maps before construction.
- Damaging underground utilities may cause liability; always confirm location in advance.
- 2
Cut parts and prepare stainless steel screws
≈ 45 minPrepare two posts (4x4 lumber 89×89×2100mm), two horizontal rails (2x4 lumber 38×89×1200mm), seventeen boards (SPF lumber 1x4 19×89×1500mm), 102 stainless steel coarse-thread screws 75mm, three bags of quick-setting mortar, and two cans of outdoor wood preservative (such as Xyladecor).
CutUse the in-store cut serviceCutSTEP 2 / 9Tip
- Post length 2400mm = 1800mm above ground + 600mm buried; burial depth is the minimum to withstand wind pressure.
- Stainless steel screws are essential for outdoor use; iron screws will rust within a year and lose strength.
- Choose quick-setting mortar to set and allow work to proceed on the same day.
Watch out
- Insufficient burial depth of posts risks collapse from strong winds.
- Using iron screws causes rust stains on boards and damages paint film.
- 3
Dig post holes and lay gravel
≈ 90 minDig three post holes 200mm diameter and 600mm deep. Space posts 900mm apart (center + ends of 1200mm fence width). Lay 100mm thick gravel at hole bottoms for drainage.
Drill a hole下穴 φ3.5mmDrillSTEP 3 / 9Tip
- Using a post hole digger reduces work to one-third.
- Hole diameter ideal at twice post width (200mm) allows mortar thickness to fix posts.
- Gravel layer prevents post bottoms from standing in water.
Watch out
- Insufficient hole depth risks collapse from strong winds; 600mm depth is mandatory.
- Poor drainage causes post base rot; always create drainage layer with gravel.
- 4
Set posts vertically and fix with mortar
≈ 120 minSet posts vertically in holes, confirm verticality with level, and temporarily fix with stakes and wire. Mix quick-setting mortar and pour into holes to fix posts. Build mortar slightly higher than ground to prevent water accumulation. Leave to cure undisturbed for 24 hours.
Build the frameTighten joints firmlyAssembleSTEP 4 / 9Tip
- Mix mortar with minimal water (firm consistency); too soft reduces strength after curing.
- Confirm verticality in two directions (front-back and left-right) with level.
- Finish mortar surface 10mm above ground to prevent water ingress.
Watch out
- Strong wind before mortar cures can tilt posts; choose wind-free day.
- If posts are not vertical, horizontal rails will not align level.
- 5
Attach horizontal rails
≈ 60 minAfter mortar cures, attach two horizontal rails (38×89×1200mm) outside of the three posts (garden side) at upper, middle, and lower positions. Heights approximately 200mm, 900mm, and 1700mm from ground. Drill φ5mm pilot holes from post side, then drive two stainless steel coarse-thread screws 75mm at each joint.
Build the frameTighten joints firmlyAssembleSTEP 5 / 9Tip
- Attach rails to garden side of posts; when viewed from road side, boards hide rails for aesthetics.
- Confirm rails are level with a level before fastening.
- Drive screws from post side; rails will be concealed by boards, preserving appearance.
Watch out
- Post misalignment affects rails; measure post spacing before cutting rails.
- Without pilot holes, 4x4 posts may split when screwing.
- 6
Attach boards (1x4 lumber)
≈ 90 minAttach 20 SPF lumber 1x4 boards vertically to horizontal rails. Leave 5mm gaps (about one finger width) between boards to release wind pressure and ensure ventilation. Attach with three screws each (one screw each on upper, middle, and lower rails).
Build the frameTighten joints firmlyAssembleSTEP 6 / 9Tip
- Do not tightly pack boards; gaps allow wind pressure relief, ventilation, and visual rhythm.
- Use chopsticks or 5mm spacers to keep gap uniform.
- Keep board bottoms 50mm above ground to avoid water contact.
Watch out
- Tightly nailed boards increase risk of collapse from wind pressure.
- Boards contacting ground absorb water and rot; always keep elevated.
- 7
Sanding and surface preparation
≈ 60 minSand entire assembled fence starting with #120 grit then #240 grit. Especially sand board surfaces, ends, and corners carefully. Remove dust completely before painting to ensure outdoor paint adhesion.
Sand#120SandSTEP 7 / 9Tip
- Wood ends are water entry points; sand thoroughly to prepare for paint penetration.
- Orbital sander is convenient for large areas; consider rental services.
- Wear mask and safety glasses due to dust.
Watch out
- Insufficient sanding reduces paint adhesion and leads to early outdoor paint peeling.
- Painting over dust causes rough surface.
- 8
Apply first coat of outdoor wood preservative
≈ 90 minBrush on outdoor wood preservative (such as Xyladecor) over entire surface. Apply on front and back of boards, horizontal rails, and posts. Apply more on wood ends to soak in. Dry naturally for 24 hours.
PaintWatco oil / varnishPaintSTEP 8 / 9Tip
- Penetration into wood ends is key for preservation; focus on these areas.
- For large areas, rollers can be used; finish edges with brush.
- Avoid direct sunlight during painting which causes surface drying but inner moisture remains; aim for shade or cloudy days.
Watch out
- Rain before drying causes paint to run; check weather forecast before painting.
- Thick or heavy paint causes uneven coating; apply thin and even.
- 9
Apply second coat and final inspection
≈ 90 minAfter first coat dries completely, apply second coat thinner than the first. After drying at least 24 hours, inspect entire fence. Check that screw heads are not protruding, no paint irregularities, and posts are stable without wobble.
Done!Done — nice work!DoneSTEP 9 / 9Tip
- Two coats greatly improve outdoor durability; do not skip second coat.
- Annual maintenance with light sanding (#240 grit) and recoating extends lifespan beyond 10 years.
- Check post bases (ground interface) twice yearly as water tends to accumulate.
Watch out
- Skipping second coat causes paint peeling and wood rot within 2-3 years.
- Neglecting annual recoating leads to replacement within 10 years.
Warnings
- ⚠️Use wood preservative coating if the panel is used outdoors (reapply annually recommended).
- ⚠️Use stainless steel screws (iron screws will rust).
- ⚠️Drill pilot holes before driving screws to prevent wood splitting.
Custom design
Changing the dimensions roughly scales the cut list. Get the precise calculation in the app.
Enter dimensions (mm)
Quick estimateWidth W
Depth D
Height H
Base size 1200×40×1500 mm
Cut list (preview)
Total board length ≈ 33.3 m · Available at: カインズ / コメリ / コーナン / DCM
Accurate materials, prices, and cuts in the app
Per-retailer pricing, purchase links, and optimal cut layouts are auto-calculated in the app.
Examples9 examples
View all →Actual cost
¥6,884
Build time
1 h 54 min
Home center
ロイヤルホームセンター
気になっていたバルコニー目隠しパネルにようやく挑戦。築年数が経った家なので、雰囲気に合わせて少し重めの作りに。ウリンを使ったので、初期費用は張りますが長期的にはこちらが安いと割り切ってます。支柱は単管パイプを 1m 埋めて、その上に木材で化粧。台風でも無事でした。塗料は食品衛生法適合品。子供がなめても大丈夫なものに統一。完成までトータル 1 ヶ月、ゆるゆる進めて楽しかったです。
Actual cost
¥10,278
Build time
3 h 5 min
Home center
コーナン
バルコニー目隠しパネルを自作しました。古い柱や梁とのバランスを意識して仕上げました。メイン材は今回もイタウバ。雨ざらしでも 10 年は安心です。支柱は単管パイプを 1m 埋めて、その上に木材で化粧。台風でも無事でした。この作品で DIY のモチベがまた上がりました。
Actual cost
¥6,592
Build time
1 h 47 min
Home center
コーナン
今回はバルコニー目隠しパネルにトライ。周りに何もない環境なので電動工具をフル活用。目隠し板は隙間 20mm で風抜けを作りつつ、目線は完全カット。子供が触っても安全なように角は全部丸めてます。この作品で DIY のモチベがまた上がりました。
Actual cost
¥7,384
Build time
2 h 46 min
Home center
ロイヤルホームセンター
今回はバルコニー目隠しパネルにトライ。築年数が経った家なので、雰囲気に合わせて少し重めの作りに。目隠し板は隙間 20mm で風抜けを作りつつ、目線は完全カット。塗料は食品衛生法適合品。子供がなめても大丈夫なものに統一。費用対効果も高くて満足です。
Actual cost
¥8,441
Build time
2 h 55 min
Home center
DCM
週末を使ってバルコニー目隠しパネルを作りました。支柱は単管パイプを 1m 埋めて、その上に木材で化粧。台風でも無事でした。この作品で DIY のモチベがまた上がりました。
Actual cost
¥7,806
Build time
2 h 41 min
Home center
コーナン
今回はバルコニー目隠しパネルにトライ。古い柱や梁とのバランスを意識して仕上げました。ラチェット式の水準器で 3 本ごとに垂直確認。手間ですが仕上がりに直結。結果には満足してます。
Ratings
Comments4
- 古道具と木_762026/04/26

根太のピッチを 450mm まで詰めれば SPF でも 5 年は持たせられそう
- tatsuki_iemori2026/04/26

屋外用の塗料って何を使えばいいんでしょうか
- saya@賃貸OK2026/04/26

束石は水盛りでしっかり水平を取れば、後の歪みを防げますよ
1 more comment(s) in the app
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