Plans

Plastic bin cat shelter

A plastic tote is waterproof, light and easy to find. On its own it is not insulation, so the models add straw, foam boards or a second tote. Tote sizes are nominal: measure yours before cutting.

  • Alley Cat Allies describes a tote-in-tote: about 30 and about 20 gallons, foam on the bottom and straw.
  • Cut plastic edges are sharp; cover them from the outside.
  • Weight or secure the light tote.
  • Plastic has no sourced thermal conductivity, so only the foam layer is calculated.

7 catalog models

SCHEMATIC ENVELOPE700 mmDesign class: Reuse
Cats2×Winter / Rain

EPS Core in Plastic Shell

A foam box placed inside a larger tote: the plastic protects the foam from rain, sun and outside scratching while the foam insulates. The entrance is cut through both, aligned.

Build
Beginner
Tools
Utility knife
Time estimate
30 min–60 min
Insulation
EPS 50 mm
Reused materialCalculations: 5/9
SCHEMATIC ENVELOPE600 mmDesign class: Budget
Cats1×Rain / Wind

Single Plastic Tote

The simplest rain and wind cover: a lidded tote with an entrance and a little straw. Without insulation it is not a winter solution; it is a starting point to upgrade later.

Build
No skill needed
Tools
Utility knife
Time estimate
15 min–30 min
Insulation
no insulation
Reused materialCalculations: 5/9
SCHEMATIC ENVELOPE600 mmDesign class: Budget
Cats2×Winter / Rain

Tote with Straw

A tote raised off the ground, with a high entrance sill and loose straw up to half the height. An inexpensive winter option for one cat until an insulated shelter is built.

Build
No skill needed
Tools
Utility knife
Time estimate
20 min–40 min
Insulation
no insulation
Reused materialCalculations: 5/9
SCHEMATIC ENVELOPE700 mmDesign class: Budget
Cats2×Winter / Rain

Tote + EPS Lining

A tote lined inside with 30 mm EPS on every side and under the lid. The foam must be covered by straw and checked for scratching.

Build
Beginner
Tools
Utility knife
Time estimate
60 min–2 h
Insulation
EPS 30 mm
Reused materialCalculations: 7/9
SCHEMATIC ENVELOPE700 mmDesign class: Budget
Cats2×Winter / Rain

Tote + XPS Lining

The same tote as the EPS variant but with XPS boards that tolerate moisture and pressure better. Useful when you have XPS offcuts from construction.

Build
Beginner
Tools
Utility knife
Time estimate
60 min–2 h
Insulation
XPS 30 mm
Reused materialCalculations: 7/9
SCHEMATIC ENVELOPE760 mmDesign class: Budget
Cats2×Winter / Rain

Tote-in-Tote + Straw

The Alley Cat Allies method: a large tote of about 30 gallons, a foam slab on the bottom, a smaller tote of about 20 gallons inside and straw, with one entrance through both.

Build
Beginner
Tools
Utility knife
Time estimate
45 min–90 min
Insulation
EPS 30 mm
Reused materialCalculations: 7/9
SCHEMATIC ENVELOPE760 mmDesign class: Budget
Cats2×Winter / Rain

Double Tote Insulated

A tote-in-tote with foam panels also in the gap between walls, not only on the bottom. More work and material than the basic version, with a more complete insulation layer.

Build
Beginner
Tools
Utility knife
Time estimate
60 min–2 h
Insulation
EPS 30 mm
Reused materialCalculations: 7/9