Window Cat Steps

Dimensions

Cut list

Tools you'll need

• ✓

  Measuring Tape (5m or longer)

  Used for measuring each material

• ✓

  Pencil and Carpenter's Square

  For marking and checking right angles

• ✓

  Saw

  Use home center cutting service recommended

• ✓

  Electric Screwdriver

  Impact driver recommended for better efficiency

• ✓

  Sandpaper

  Prepare #120 and #240 grit

• ✓

  Level

  Essential for checking levelness during assembly

• ✓

  Clamps (2 or more)

  Used for temporary fixation during joining

• ✓

  Brush and Paint Tray

  Used for oil or varnish finishing

• ✓

  Stud Finder

  To locate wall studs and columns

Materials

Build steps

1. 1

   Confirm Installation Location and Cat Traffic Flow

   ≈ 15 min

   Decide the installation spot for the Window-side Cat Step (450×250×200mm). Ideally, place it near a window or along a wall where the cat can easily jump on. Choose a place that can be fixed to the wall to prevent tipping.

   Measure

   W 450 mm

   MeasureSTEP 1 / 11

   Tip

   • Leave at least 300mm clearance from the ceiling to prevent the cat from pushing up and climbing on the ceiling.
   • Installing near a window is preferred by cats for sunbathing and watching outside.
   • If you have multiple cats, provide escape routes by setting heights 200mm or higher.

   Watch out

   • Avoid placing directly under an air conditioner; cats dislike direct drafts.
   • Avoid designs where cats cannot get down after climbing. Lower platform boards should be arranged stepwise.
2. 2

   Cut and Prepare Materials

   ≈ 25 min

   Cut one platform board (15×250×250mm) from 15mm thick Lauan plywood. Prepare one hemp rope wrapped pole (φ90×200mm), one 2×4 lumber post (38×89×200mm), 1 meter of 8mm hemp rope, forty 50mm coarse-thread screws, and one carpet piece (boa material) sized 250×250mm.

   Cut

   Use the in-store cut service

   CutSTEP 2 / 11

   Tip

   • 15mm Lauan plywood offers a good balance of strength and lightness; 12mm cannot support the weight.
   • It is quicker to purchase the hemp rope wrapped pole as a ready-made product, available at DIY stores.
   • Thin carpets are easier to glue; thick carpets reduce claw grip.

   Watch out

   • Using thin plywood may crack from the impact when the cat jumps.
   • Soft core poles are unstable. Choose hardwood cores for rope-wrapped poles.
3. 3

   Sand All Materials

   ≈ 25 min

   Sand the Lauan plywood and 2×4 lumber first with #120 grit then #240 grit sandpaper. Ensure there are no splinters, as cats will lick and scratch these surfaces. Carefully bevel corners.

   Sand

   #120

   SandSTEP 3 / 11

   Tip

   • Smooth all surfaces the cat will touch; check by running your fingertip over them.
   • Plywood edges (cross sections) are rough compared to faces; sand thoroughly.
   • Perform sanding indoors or in a well-ventilated area to avoid dust accumulation.

   Watch out

   • A single splinter can injure cat’s tongue or paw pads.
   • Dust sticking to carpets is difficult to remove; keep sanding away from carpeted areas.
4. 4

   Mark Support Post Positions on Platform Boards

   ≈ 20 min

   Mark positions for attaching support posts on four platform boards using a pencil. The bottom platform (Platform 1) will have two posts positioned to form a square. Platforms 2 to 4 will be arranged at different heights (e.g., 300mm, 600mm, 900mm). Slightly offset posts from the centerline for easier cat walking.

   Mark a line

   Use a try square

   MarkSTEP 4 / 11

   Tip

   • Balance the board’s center of gravity with a square base formed by four posts to prevent tipping.
   • Arrange the elevated platforms stepwise for easy cat climbing.
   • Use a center punch for clear hole centers to facilitate drilling.

   Watch out

   • Placing posts too close to board edges risks splitting when driving screws.
   • Misaligned post positions on platforms cause overall skewed assembly. Confirm by overlapping and transferring markings.
5. 5

   Drill Pilot Holes on Platform Boards and Support Posts

   ≈ 20 min

   Drill φ5mm pilot holes on the platform boards and 2×4 lumber posts. Use a countersink bit on the platform board side to create a recess for countersunk screw heads, hiding them flush. For the hemp rope wrapped pole, use the included metal brackets for screw attachment.

   Drill a hole

   φ5mm

   DrillSTEP 5 / 11

   Tip

   • Countersinking creates a neat finish and prevents cats from snagging claws on screw heads.
   • Use a drill stop to control hole depth and avoid drilling through.
   • Keep holes at least 20mm from edges on 2×4 lumber to prevent splitting.

   Watch out

   • Driving 50mm screws without pilot holes can split 2×4 lumber.
   • Excessive countersink depth reduces screw holding strength.
6. 6

   Assemble Bottom Platform and Support Posts

   ≈ 30 min

   Stand two support posts (hemp rope wrapped pole and 2×4 lumber) vertically on the bottom platform (450×450mm). From underneath, drive three 50mm coarse-thread screws into each post (total six screws). Use a carpenter's square to confirm vertical alignment. The bottom platform requires more screws as it bears the most weight.

   Build the frame

   Tighten joints firmly

   AssembleSTEP 6 / 11

   Tip

   • Check vertical alignment of posts in two directions (front and side) with a level; aim for zero deviation.
   • Apply wood glue on joint surfaces for increased rigidity when screwing from bottom.
   • Since the bottom of the platform is hidden, increasing screws is acceptable.

   Watch out

   • Even slight tilt in posts causes the upper platforms to tilt and feel unstable to cats.
   • Insufficient screw count leads to wobble from cat movement.
7. 7

   Attach Middle and Top Platforms

   ≈ 30 min

   Attach the middle platforms (at heights of 300 to 900mm) horizontally to the posts. Drill φ5mm pilot holes from underneath each platform, then drive 50mm coarse-thread screws into each post (6 screws per platform: 2 posts × 3 screws each). Confirm each platform’s levelness with a level. Ensure sufficient fixing strength to withstand impacts from cats jumping.

   Build the frame

   Tighten joints firmly

   AssembleSTEP 7 / 11

   Tip

   • Uneven platforms cause discomfort for cats.
   • Drive screws along the post’s centerline; placing them near edges risks splitting.
   • Reducing platform size as height increases can improve balance.

   Watch out

   • Screw impact during driving can misalign lower platforms’ level. Recheck levelness after assembling all three steps.
   • Insufficient screws can cause falls, considering 10kg cat weight plus dynamic load.
8. 8

   Wrap Hemp Rope on Support Post (Scratching Function)

   ≈ 30 min

   If not using a ready-made hemp rope wrapped pole, tightly wrap 1 meter of φ8mm hemp rope around the 2×4 lumber post. Fix both ends with a stapler or screws. Wrap direction should be from bottom to top, tightly with no gaps.

   Build the frame

   Tighten joints firmly

   AssembleSTEP 8 / 11

   Tip

   • Start wrapping by inserting rope end into a drilled hole in the post and fix it with wood glue to prevent loosening.
   • Fix the rope periodically with staples as you wrap to prevent loosening.
   • Hide the rope end by inserting it back into the same hole for a clean finish.

   Watch out

   • Loose rope can unravel when cats pull; wrap tightly and fix frequently.
   • Avoid synthetic ropes; cats may chew and ingest harmful fibers.
9. 9

   Attach Carpet (Boa Material)

   ≈ 25 min

   Attach carpets on the top surfaces of three platform boards (top, middle, and base) using double-sided tape or wood glue. Trim carpet corners with a cutter to fit platform shape precisely. Use strong adhesive that resists peeling from cat claws.

   Fix to the wall

   Anchor to studs

   InstallSTEP 9 / 11

   Tip

   • Choose heavy-duty double-sided tape; ordinary tape peels off from cat claws.
   • Align carpet pile direction for better appearance.
   • Leave slight excess carpet at edges and fold underneath to prevent peeling.

   Watch out

   • Weak adhesion risks carpet peeling during play with ingestion hazard.
   • Avoid cheap carpets whose latex backing decomposes into powder.
10. 10

    Fix to Wall to Prevent Tipping

    ≈ 20 min

    Secure the top of the tower to the wall using L-brackets and seismic straps to prevent tipping. Ensure attachment to wall studs identified by a stud finder. This prevents tipping from earthquakes or vigorous cat movement.

    Fix to the wall

    Anchor to studs

    InstallSTEP 10 / 11

    Tip

    • Wall attachment is essential for safety; cats jumping can easily topple a 1200mm tall tower.
    • Seismic straps can be sourced cheaply at 100-yen shops, while higher-quality options are available at home centers.
    • Do not rely solely on drywall; always fix into wall studs.

    Watch out

    • Skipping wall attachment risks injury if the tower falls during earthquakes.
    • Confirm load capacity of brackets; fastening must support total tower weight plus cat and seismic forces.
11. 11

    Final Checks and Cat Introduction

    ≈ 15 min

    Check all screw tightness, confirm no carpet peeling, and verify no wobbling in posts. Place the tower at its installation site and ensure level with a level tool. If wobbling occurs, attach felt pads under legs for adjustment. Before introducing the cat, shake the tower strongly to test stability.

    Done!

    Done — nice work!

    DoneSTEP 11 / 11

    Tip

    • Placing cat treats on the platforms helps the cat approach without fear.
    • Do not force the cat onto the tower the first day; allow natural exploration.
    • Place nearby furniture as ‘stairs’ for a few days to facilitate cat climbing.

    Watch out

    • Poor final checks can lead to assembly defects causing cat injuries.
    • If cats do not climb, it may be due to poor location or scent; observe for a while.

Warnings

• ⚠️Drill pilot holes before driving screws to prevent wood splitting.

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