Many gardeners dream of adding a greenhouse to their garden space – and for good reason. They are excellent for starting seeds and for extending the growing season in cold climates. But they are expensive, which is why many DIYers looking for alternatives that demand less from their bank accounts.
This project is one such alternative.
If you think building a greenhouse from old windows won’t look as attractive and be as functional as a ‘regular’ one? Well, this project just might change your mind!
Building your own using reclaimed windows is definitely a great way to lessen project expenses, but usually at the expense of aesthetics. Sometimes, it doesn’t even serve its purpose well!
This project however proves that with the right and enough planning, your greenhouse made from old windows can be as gorgeous and good as a ‘new’ one. So if you are particular with aesthetics and function, this DIY project is for you!
This one measures 12′ x 12′ and is 12′ tall at the highest point. Designed to catch as much of the sun’s heating during winter and less during summer, it definitely does a great job of helping you grow your own produce.
It has a 45-degree angled front window wall, polycarbonate ceiling, crank-operated east, and west windows, and flagstone flooring – all to provide suitable temperatures for your plants throughout the year. It is also equipped with a fan, a vent, and an electric heater for the colder months. To provide the air with enough humidity, an irrigation system was also installed.
Indeed, it is not just beautifully built – it is also properly designed for function!
Contents
Building a Greenhouse from Old Windows
Materials
- Old windows
- 2×4 lumber (for the frame)
- Polycarbonate sheets (for the roof, if not using glass)
- Door hinges and handle
- Screws and nails
- Silicone caulk or weatherproof window sealant
- Heavy-duty construction adhesive
- Paint or wood stain (optional, for aesthetics and protection)
- Landscape fabric (for ground cover)
Tools
- Measuring tape
- Level
- Drill and drill bits
- Screwdriver
- Hammer
- Circular saw or hand saw
- Caulking gun
- Staple gun
- Safety glasses and gloves
Instructions
Step 1: Design Your Greenhouse
- Measure the space where you plan to build the greenhouse to determine its size.
- Sketch a rough blueprint, including dimensions and placement of windows and door.
- Plan for a sloped roof to allow rainwater runoff and decide if you want any sections to be operable for ventilation.
Step 2: Prepare the Site
- Clear the area where the greenhouse will be located, removing any debris and leveling the ground.
- Lay landscape fabric to prevent weeds and cover it with gravel for drainage.
Step 3: Build the Frame
- Cut 2×4 lumber to create a sturdy frame that matches your design dimensions.
- Assemble the base, walls, and roof structure using screws and nails to ensure stability.
- Ensure everything is level and square as you build.
Step 4: Install the Windows
- Start fitting the windows into the frame. It’s easier to begin with the largest pieces first and fill in gaps with smaller windows.
- Use heavy-duty construction adhesive along with screws to secure the windows in place.
- Seal all edges with silicone caulk to prevent air leaks and water ingress.
Step 5: Add the Roof
- If using old windows for the roof, ensure they are securely attached and sealed.
- Alternatively, install polycarbonate sheets which are lightweight and provide good insulation. Overlap sheets slightly to prevent leaks.
Step 6: Install the Door
- Use additional old windows or construct a door frame with lumber.
- Attach the door using hinges and fit a handle for easy access.
- Seal the door edges to keep the elements out.
Step 7: Finish and Weatherproof
- Paint or stain the wooden parts of the greenhouse to protect against the elements and improve its appearance.
- Check all seals and apply additional caulk where necessary.
Step 8: Set Up the Interior
- Install shelves and plan your plant layout according to their light and space requirements.
- Consider installing an automatic watering system or drip hoses for irrigation.
Step 9: Maintenance
- Regularly check the structure for any damages or leaks.
- Clean the windows seasonally to maximize sunlight penetration.
Click on any image to start the lightbox display. Use your Esc key to close the lightbox.
You can get step-by-step instructions from Kirklewellen over here…
Finding and Selecting Old Windows for Your Greenhouse
Constructing a greenhouse from old windows is not only an eco-friendly project but also a creative way to recycle materials. The right windows can transform an ordinary garden into a productive, year-round haven for your plants. Here’s how to find and select the best old windows for your greenhouse project.
Know Where to Look
- Salvage Yards and Reclamation Centers: These places often have a wide selection of old windows at reasonable prices. It’s a treasure trove for anyone looking to build a greenhouse from old windows.
- Online Marketplaces: Websites like Craigslist, eBay, and Facebook Marketplace are good starting points. People often list old windows for free or for sale when they renovate their homes.
- Garage Sales and Flea Markets: Keep an eye out for garage sales and flea markets in your area. These can be excellent places to find old windows suitable for a greenhouse from old windows.
Evaluate the Condition
- Check for Damage: Inspect each window carefully for cracks, rotting frames, or broken panes. Minor issues can be repaired, but avoid windows that require extensive restoration.
- Consider the Style: Look for windows that match in style and size to maintain a uniform look for your greenhouse from old windows. However, varying sizes can be used creatively for a more rustic appearance.
- Assess the Material: Wooden frames are common, but they require treatment to withstand moisture. Aluminum frames are more durable but might not fit the aesthetic of a greenhouse from old windows.
Select the Right Type
- Functional Windows: Ensure that some of your windows can open to allow ventilation inside the greenhouse. Adequate air circulation is crucial for plant health and pest control.
- Aesthetic Appeal: While functionality is key, the visual appeal of your greenhouse from old windows is also important. Select windows with character and history to add charm to your garden.
- Size and Shape: Consider how the size and shape of the windows will impact the overall design and functionality of your greenhouse. Larger windows let in more light, which is beneficial during the colder months.
By following these guidelines, you can effectively find and select old windows that will bring your vision of a greenhouse from old windows to life, enhancing both the beauty and functionality of your garden space.
Legal Considerations and Building Codes
You should be aware of the legal issues and construction codes that can apply before you begin constructing a greenhouse out of former windows. These rules guarantee conformity with local laws and safety, thereby assisting you to prevent possible fines and difficulties.
Check Local Zoning Laws
- Research Zoning Requirements: Your local zoning rules could constrain where you can create your greenhouse from old windows, its size, and its proximity to property lines. For particular guidelines, get in touch with your local planning office.
- Permit Requirements: Depending on your location and the size of your greenhouse from old windows, you could require a building permit. Often this is required to make sure your construction satisfies safety criteria.
Understand Building Codes
- Safety Standards: Building codes focus on safety and include requirements for structural integrity, materials used, and overall design. Make sure your greenhouse from old windows conforms to these standards to ensure durability and safety.
- Environmental Regulations: Some areas have environmental regulations concerning water runoff and land use. Your greenhouse from old windows should not adversely affect your local ecosystem with increased water runoff or by using prohibited materials.
Considerations for Historic Districts
- Compliance in Historic Areas: If you’re in a historic district, there may be additional restrictions on the types of materials and designs you can use for your greenhouse from old windows. Check with your local historic preservation board.
Engage with Professionals
- Consult Experts: It’s advisable to consult with an architect or a contractor who has experience with local building codes and greenhouses. They can provide valuable insights and help ensure that your greenhouse from old windows meets all legal requirements.
Regular Inspections and Compliance
- Inspections: After construction, your greenhouse might need to be inspected by local authorities to ensure it complies with all applicable laws and codes. Prepare for these inspections to avoid any issues.
By carefully considering these legal and code requirements, you can ensure that your project for a greenhouse from old windows proceeds smoothly and legally, allowing you to focus on growing your plants in a beautiful, compliant structure.
Conclusion
Constructing a greenhouse out of old windows lowers waste in addition to saving money. This project lets you design a distinctive, useful area catered for your gardening requirements. To maximise the lifetime and profitability of your greenhouse and provide you a wonderful, environmentally friendly refuge for year-round planting, make sure you follow local laws and regulations.
We have more greenhouse projects. Check out our geodesic greenhouse guide!
