This step by step diy woodworking project is about a 4×8 catio plans. I have designed this small catio so you can create a sturdy enclosure for your cats, using basic tools and save a tone of money by doing the project by yourself. This catio features a lean to roof and a side door for easy access when cleaning the inside. Take a look over the rest of our woodworking plans, if you want to get more building inspiration.
When buying the lumber, you should select the planks with great care, making sure they are straight and without any visible flaws (cracks, knots, twists, decay). Investing in cedar or other weather resistant lumber is a good idea, as it will pay off on the long run. Use a spirit level to plumb and align the components, before inserting the galvanized screws, otherwise the project won’t have a symmetrical look. If you have all the materials and tools required for the project, you could get the job done in about a day. See all my Premium Plans HERE.
Projects made from these plans
4×8 Catio Plans
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- A – 2 pieces of 2×4 lumber – 48″ long, 2 pieces -93″ long BASE
- B – 2 pieces of 2×2 lumber – 96″ long, 2 pieces – 91 1/2″ long BACK WALL
- C – 2 pieces of 2×2 lumber – 96″ long, 4 pieces – 85″ long, 6 pieces – 30″ long FRONT WALL
- D – 2 pieces of 2×2 lumber – 45″ long, 3 pieces – 85″ long, 2 pieces – 20 1/4″ long SIDE WALL
- E – 2 pieces of 2×2 lumber – 45″ long, 3 pieces – 85″ long, 2 pieces – 16 1/2″ long, 1 piece of 2×4 lumber – 24″ long SIDE WALL
- F – 7 piece of 2×2 lumber – 50 1/2″ long RAFTERS
- G – 2 pieces of 1×3 lumber – 51 1/2″ long, 1 piece – 96″ long TRIMS
- H – 2 pieces of 2×2 lumber – 69″ long, 2 pieces – 24″ long, 1 piece – 21″ long, 8 pieces – 8 3/4″ long DOOR
- I – 50 sq ft of policarbonate ROOF
- J – 4 pieces of 2×2 lumber – 26″ long, 4 pieces – 14 1/2″ long, 4 pieces – 30″ long, 2 pieces of 3/4″ plywood – 7 1/4″x30″ long SHELVES
- 32 pieces of 2×2 lumber – 8′
- 4 pieces of 2×4 lumber – 8′
- 3 pieces of 1×3 lumber – 8′
- 3 1/2″ screws, 2 1/2″ screws
- hinges, latch
- 40 sq ft of poly-carbonate
- 150 sq ft hardware cloth
- wood glue, stain/paint
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How to build a 4×8 catio
The first step of the project is to build the wall frame that goes against the house. Cut all the components from 2×2 lumber, as shown in the diagram. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs. Make sure the corners are square and check if the diagonals are equal.
Next, but the opposite side wall for the catio. Start by cutting all the components from 2×2 lumber, following the info in the diagram. Drill pilot holes through the plates and then insert 3 1/2″ screws into the studs.
Build the side wall for the catio, that has the door opening. Frame the door by installing the double 2×4 header. Make sure all the corners are square and align the edges flush. You can adjust the size of the door to suit your needs.
Build the other side wall for the catio, using the info from the diagram. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs.
Use 2×4 pressure treated lumber for the base of the catio. Drill pilot holes and insert 3 1/2″ screws to lock them together. Make sure the corners are square and align the edges flush. Select the location for the catio and level the ground thoroughly. You can pave the are under the catio.
Next, you need to assemble the catio. Align the bottom plates to the base of the catio, making sure the edges are flush. Drill pilot holes through the plates and insert 2 1/2″ screws into the base. Check if the corners are square and align the edges. Drill pilot holes and insert 2 1/2″ screws to lock everything together tightly.
Build the rafters for the catio roof using 2×2 lumber. Make the 7.5 degree cuts to both ends of the rafters using a miter saw.
Fit the rafters to the top of the catio and place them every 16″ on center. Drill pilot holes and insert 3 1/2″ screws to lock them into place tightly.
Fit the policarbonate sheets to the top of the catio. Align the edges and insert the appropriate screws to lock the sheets to the rafters. The policarbonate sheets will protect the catio from the elements, but in the same time it will let the light get through.
Attach the wire mesh to the exterior of the catio. Make sure you staple the mesh to the frame of the cation thoroughly.
Use 1×3 lumber for the roof trims. Make the angle cuts at both ends of the side trims using a miter saw.
Fit the trims to the front and sides of the catio. Align the edges flush, drill pilot holes and insert 2 1/2″ screws to lock them into place tightly.
Fit the vertical supports for the shelves. Drill pilot holes and insert 2 1/2″ screws to lock the supports to the house.
Make angle cuts to the diagonal braces.
Drill pilot holes and insert 2 1/2″ screws to lock the braces to the supports. Fit the horizontal supports, as shown in the diagram.
Use 3/4″ plywood for the shelves. Fit the shelves to the frames and lock them into place with 2 1/2″ screws, after drilling pilot holes.
Use 2×2 lumber for the door frame. Assemble the frame by drilling pilot holes and insert 2 1/2″ screws. Reinforce the door frame with diagonals. Make 45 degree cuts at both ends of the diagonals and secure them to the door with 2 1/2″ screws. Make sure the corners of the door are right angled. Cover the door with wire mesh.
Fit the door to the opening and lock it to the frame with hinges. Install a latch so you keep the catio closed.
Last but not least, take care of the finishing touches. Therefore, smooth the edges and make sure there are no wire exposed to injure your pets. Apply a few coats of paint / stain to enhance the look of the catio and to protect the components from the elements.
Make sure you take a look over the rest of my cat project plans HERE. I have tons of designs covering everything you need to keep you cat healthy and happy: insulated cat houses, window catio, large catio and cat trees. If you like my approach to designing woodworking plans, make sure you check out the list of all my free designs HERE.
This woodworking project was about 4×8 catio plans free. If you want to see more outdoor plans, check out the rest of our step by step projects and follow the instructions to obtain a professional result.