Below are the detailed steps and the list of tools and materials needed to build a cat shelter for stray cats with extruded plastic panels (XPS panels). The programme focuses on warmth, waterproof and safety, and is suitable for outdoor use.
I. List of tools and materials
1. Main materials:
- Extruded plastic sheet (thickness 5-10cm, recommended size: 120cm×60cm)
- Aluminium foil tape (waterproof sealing)
- Tarpaulin/plastic tarpaulin (outer layer protection)
- Old blanket/coral fleece fabric (inner lining)
- Plastic ties/strong glue (for fixing)
2. Tools:
- Hobby knife / thermal cutter
- Ruler/tape measure
- Markers
- Cut-resistant gloves
- Sandpaper (to sand edges)
3. Optional accessories:
- Waterproofing paint (roof reinforcement)
- Plastic floor mats (bottom moisture barrier)
- Reflective stickers (night warning)
II. Detailed Production Steps
Stage 1: structural design
1. Basic box:
- Suggested size: L50cm x W40cm x H35cm (to accommodate 2-3 cats)
- Adopt double-layer board structure (to enhance heat preservation)
2. Entrance design:
- Circular opening diameter 15cm (5cm from the bottom)
- It is recommended to add a short passage of PVC pipe (to prevent backflow of wind and rain)
Stage 2: Sheet cutting
1. bottom board: 50×40cm (2 layers)
2. Side panels:
- Front/back board: 50×35cm (2 layers each)
- Left/right board: 40×35cm (2 layers each)
3. top plate: 52 × 42cm (single layer, extended rainproof)
Note: Each panel needs to be sandpapered on the edges after cutting to prevent cutting the cat
Stage 3: Assembly process
1. Bottom frame:
- Glue the double-layer bottom board with polyurethane glue
- Staggered splicing of the perimeter panels (to enhance structural strength)
- Fixed with plastic ties (at 15cm intervals).
2. waterproof treatment:
- Fill the seams with foam and apply aluminium foil tape.
- The whole outer layer is wrapped with tarpaulin (sealing the seams with adhesive tape).
- Waterproofing coating on the roof (polyurethane waterproofing coating is recommended).
3. Internal arrangement:
- 3cm thick pearl cotton matting (moisture-proof and heat-insulating)
- Cover with removable coral fleece mat (Velcro fixing recommended)
- Place cat warmer pad (optional USB port low power model)
Stage 4: Safety Optimisation
1. Windproof design:
- Pressing stone/brick on top (weight about 5kg)
- Bottom corners fixed with floor spikes (anti-tipping)
2. Concealment:
- Camouflage waterproof paint on the outside
- Shrubs and leaves placed around the perimeter (natural camouflage)
3. Sanitary maintenance:
- Design of removable roof (magnetic fixing).
- Drainage holes are reserved at the bottom (0.5cm in diameter, with an anti-insect net).
Third, the use of precautions
1. Points for site selection:
- Leeward and sunny place
- Higher than the ground 10cm (available brick pad high)
- Away from the pedestrian walkway (to maintain a distance of more than 3 metres)
2. regular maintenance:
- Weekly inspection of the integrity of the waterproof layer
- Monthly replacement of lining during rainy season
- Replace the lining every month during the rainy season.
3. Safety warning:
- Avoid the use of adhesives containing formaldehyde
- Prohibit the use of irritating materials such as glass wool
- Keep entrances and exits free of obstructions
IV. Advance Modification Suggestions
1. solar ventilation system (5V small fan)
2. Temperature and humidity monitoring module (Bluetooth connection)
3. Dual structure design (resting area + eating area)
4. Expandable design (add heat preservation curtain in winter)
This solution is measured to maintain a temperature difference of more than 5℃ in the nest under -10℃ environment, and is recommended to be used together with a timed feeding point. Pay attention to wearing protective masks when making to avoid inhaling extruded board debris.