Design class: ReuseValidation status: Data validated
Pallet Mini Cat Shelter
Three checked pallets cut into a floor and walls, with EPS in the cavities, boards over the gaps and an interior lining. The pallet itself raises the floor off the ground.
A warm shelter that gets damp can be worse than a simpler one that stays dry.
“Data validated” means only the data and calculations are checked; the model has not been built or tested physically.
Capacity1–2
Outside size800 × 620
BuildIntermediate
Time (estimate)4 h–7 h
model v1.0.0compiler P1.0.0plan 72b3eebec90698f2Pallet frameWinter · Wind
This model has no 3D view; the drawing and dimensions below fully describe the construction.
EPS foam board3 sheetssheet nesting · 3 × 1000 × 500 mm (planning format; check with your supplier).
OSB/3 board1 sheetssheet nesting · 1 × 2500 × 1250 mm (planning format; check with your supplier).
Interior plywood lining1 sheetssheet nesting · 1 × 2500 × 1250 mm (planning format; check with your supplier).
Scrap lumber and old boards11.96 massumption · Board length assuming 100 mm wide boards + 15%.
Solid softwood (battens, studs)4.28 mfrom geometry · Total length from the cut list + 10% allowance.
Wooden pallet3 pcsfrom geometry · Number of distinct pallets the sections are cut from; each must pass the checklist.
Roofing felt0.91 m²assumption · Roof area + 15% for overlaps.
Wood screws2 packassumption · Joining pallets and cladding; tips must not protrude inside.
Sealant1 packassumption · Exterior roof joints.
Straw1 baleassumption · Loosely to a quarter or half of the height; keep the rest dry for refills.
Cut list
Parts to cut
IDPartDimensionsQty
pallet-floor-1Pallet section (floor) from pallet 1Each cut must leave a stringer or block at its end; adapt to the real pallet.800 × 600 × 144 mm1
pallet-front_left-2Pallet section (front left) from pallet 1Each cut must leave a stringer or block at its end; adapt to the real pallet.300 × 400 × 144 mm1
pallet-back-3Pallet section (back) from pallet 2Each cut must leave a stringer or block at its end; adapt to the real pallet.800 × 400 × 144 mm1
pallet-front_right-4Pallet section (front right) from pallet 2Each cut must leave a stringer or block at its end; adapt to the real pallet.300 × 400 × 144 mm1
pallet-side_left-5Pallet section (side left) from pallet 3Each cut must leave a stringer or block at its end; adapt to the real pallet.600 × 400 × 144 mm1
pallet-side_right-6Pallet section (side right) from pallet 3Each cut must leave a stringer or block at its end; adapt to the real pallet.600 × 400 × 144 mm1
roofRoof · OSB/3 board920 × 865 × 12 mm1
clad-backOuter cladding (back) · Scrap lumber and old boards800 × 400 × 20 mm1
clad-sideOuter cladding (side) · Scrap lumber and old boards600 × 400 × 20 mm2
clad-front-1Outer cladding (front-1) · Scrap lumber and old boards300 × 400 × 20 mm1
clad-front-2Outer cladding (front-2) · Scrap lumber and old boards300 × 400 × 20 mm1
ins-backPallet cavity insulation (back) · EPS foam boardCut to fit between the pallet stringers.800 × 400 × 30 mm1
ins-sidePallet cavity insulation (side) · EPS foam boardCut to fit between the pallet stringers.600 × 400 × 30 mm2
ins-front-1Pallet cavity insulation (front-1) · EPS foam boardCut to fit between the pallet stringers.300 × 400 × 30 mm1
ins-front-2Pallet cavity insulation (front-2) · EPS foam boardCut to fit between the pallet stringers.300 × 400 × 30 mm1
Partial estimate: some layers are unknown, so no U-value is calculated. Only the resistance of known layers is shown.
Wall
EPS foam board · 30 mmR 0.79
Interior plywood lining · 4 mmR 0.02
Wooden pallet · 144 mm (assumed)unknown
Scrap lumber and old boards · 20 mmunknown
Known-layer resistance: 0.81 m²K/W
Not included
Air leakage through the entrance and joints
Thermal bridges through battens, edges and fasteners
Moisture, condensation and property changes of damp material
Heat produced by the animal
Wind and transient temperature changes
Assumptions
Thin layers without a sourced λ (roof covering, film, mat) are not counted.
The pallet is an unknown layer with voids; only known layers are counted.
Floor and roof are not insulated.
The estimate is not a temperature guarantee and does not claim the shelter is safe to any temperature.
Water and moisture
Weather exposure
A warm shelter that gets damp can be worse than a simpler one that stays dry. This is an explanation, not a condensation calculation.
✓Ground contactRaised about 144 mm off the ground.
✓Rain splashHigh enough that rain splash from the ground does not hit the floor.
✓Roof drainageThe roof falls from the entrance to the rear, so water runs off away from the entrance.
!Rain at the entranceLow sill: rain and snow get in more easily; turn the entrance away from wind.
!DryingWithout a service opening drying and cleaning are harder; change bedding through the entrance.
!Absorbent materialThe material absorbs moisture; check it more often and replace it when damp.
!Maintenance accessLeave room around the house for checks and cleaning.
Local price profile
Cost estimate
Quantities come from the model. Prices are not fabricated: enter what you actually pay locally and the estimate stays in your browser.
Prices entered: 0 / 10
EPS foam board3 × 1000 × 500 mm (planning format; check with your supplier).
3 sheetsRSD 0
OSB/3 board1 × 2500 × 1250 mm (planning format; check with your supplier).
1 sheetRSD 0
Interior plywood lining1 × 2500 × 1250 mm (planning format; check with your supplier).
1 sheetRSD 0
Scrap lumber and old boardsBoard length assuming 100 mm wide boards + 15%.
11.96 mRSD 0
Solid softwood (battens, studs)Total length from the cut list + 10% allowance.
4.28 mRSD 0
Wooden palletNumber of distinct pallets the sections are cut from; each must pass the checklist.
3 itemsRSD 0
Roofing feltRoof area + 15% for overlaps.
0.91 m²RSD 0
Wood screwsJoining pallets and cladding; tips must not protrude inside.
2 itemsRSD 0
SealantExterior roof joints.
1 itemRSD 0
StrawLoosely to a quarter or half of the height; keep the rest dry for refills.
1 itemRSD 0
Estimate from entered pricesRSD 0
Sheet, XPS, framing and hardware quantities come from the compiler. The estimate still excludes delivery, tools, labor, local taxes and unforeseen losses beyond the stated allowances. PROVISIONAL and product-specific items remain explicitly labeled.
Placement
Check the spot
No obvious issue detected
This is not a safety certificate for the spot: it only means none of the listed questions is ticked.
Bedding
What goes inside
RecommendedStrawRepels moisture and stays loose. Replace when damp, compacted or soiled, and when seasons change.
Not recommendedHaySoaks up moisture, turns cold and can mould. If already in a shelter, replace it with straw.
Not recommendedBlanketAbsorbs and holds moisture; a damp blanket chills. Wash and swap as soon as it is damp.
Not recommendedTowelAbsorbs moisture like a blanket. Wash and swap as soon as it is damp.
Not recommendedWood shavingsPartly absorbs moisture. Change when damp or compacted.
Not recommendedWashable dog bedDepends on fabric; textile absorbs moisture. Dry or swap as soon as it is damp.
Not recommendedNo beddingNothing to absorb moisture. Not applicable.
Maintenance
Inspection schedule
WeeklyCheck that the straw is dry and loose; replace it when damp or compacted.
WeeklyCheck for water or dampness on the floor and walls, especially under the entrance.
After stormsAfter rain or snow check the interior and the ground under the shelter.
WeeklyCheck the roof covering, overlaps and that water runs off at the rear, away from the entrance.
WeeklyCheck that screws and nails are tight and no tip protrudes.
WeeklyCheck edges: no splinters, cracks or swollen areas.
After stormsClear snow from entrances and exits so the animal cannot be snowed in.
Each seasonClean the interior; service access must allow cleaning without dismantling.
Upgrade path
Where to go next
Each step states what you add, what you gain and what stays limited. A new model has a new plan ID; changing an existing build has no canonical plan.
XPS foam boardabout the same layer resistance at 27 mm (conservatively 30 mm); thermal equivalence is not structural
PIR / polyiso boardabout the same layer resistance at 19 mm; thermal equivalence is not structural
Cork boardPossible substitute requiring redesign: at least one material has no sourced thermal conductivity, so an equivalent thickness cannot be calculated.
OSB/3 board · 12 mm
OSB/4 boardThe substitute changes the construction (thickness, strength or water protection); parts and joints must be re-planned.
Exterior plywoodThe substitute changes the construction (thickness, strength or water protection); parts and joints must be re-planned.
Interior plywood lining · 4 mm
Exterior plywoodThe substitute changes the construction (thickness, strength or water protection); parts and joints must be re-planned.
OSB/3 boardThe substitute changes the construction (thickness, strength or water protection); parts and joints must be re-planned.
Vinyl protective floor surfaceThe substitute changes the construction (thickness, strength or water protection); parts and joints must be re-planned.
Scrap lumber and old boards · 20 mm
Wooden palletThe substitute changes the construction (thickness, strength or water protection); parts and joints must be re-planned.
OSB/3 boardThe substitute changes the construction (thickness, strength or water protection); parts and joints must be re-planned.
Solid softwood (battens, studs)The substitute changes the construction (thickness, strength or water protection); parts and joints must be re-planned.
Wooden pallet · 144 mm
Scrap lumber and old boardsThe substitute changes the construction (thickness, strength or water protection); parts and joints must be re-planned.
OSB/3 boardThe substitute changes the construction (thickness, strength or water protection); parts and joints must be re-planned.
Roofing felt
Bituminous membraneThe substitute changes the construction (thickness, strength or water protection); parts and joints must be re-planned.
EPDM membraneThe substitute changes the construction (thickness, strength or water protection); parts and joints must be re-planned.
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Inspect the pallets
Every pallet must pass the checklist: no stains, chemical smell, oil, rot or mould. An ISPM 15 mark confirms only a phytosanitary treatment, not the pallet's history.
Cut the pallet sections
Cut sections per the cut list so a stringer or block remains at each end. Remove protruding nails and sand the edges.
Assemble the frame
Set the floor pallet level, fix the back and side sections onto it and tie the corners with battens. The front sections leave the entrance opening.
Insulate the cavities
Cut insulation boards to fit between the pallet stringers and place them in the wall cavities.
Close the gaps outside
Fix cladding on the outside so wind and rain cannot pass through the gaps between boards.
Interior lining
Fit an interior lining so the animal touches neither insulation nor rough pallet parts.
Roof falling to the rear
Fit two tapered battens so the roof falls 40 mm to the rear, then fix the roof board and covering. Water must run off behind the house, away from the entrance.
Add straw, not hay
Loosely fill straw to a quarter or half of the interior height. Do not use hay, towels or blankets in an outdoor winter shelter: they absorb moisture and chill.
Choose the spot and secure it
Set it against a wall or fence, out of the wind, away from roof runoff and roaming dogs. Weight or secure lightweight shelters. Check the spot with the placement checklist.
Provenance
Sources and verification status
A source supports a guideline or material value, but it does not confirm this specific model. Container sizes are assumptions and build time is a planning estimate.