How To Repair, Replace Or Build Greenhouse Doors In 8 Simple Steps

Trying to find or replace a greenhouse door can be tricky. Greenhouse doors are key in keeping your plants safe and thriving. That’s why I’ve created a simple 9 step process that you can use to achieve your goals and get a new greenhouse door in there.

Let’s open the door to better gardening! (Excuse the cheesy pun) 🌱

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Repair, Replace Or Build Greenhouse Doors: The Steps

When it comes to repairing, replacing or building greenhouse doors, there are a few steps that you need to go through.

Step 1: Assess Your Greenhouse Type and Needs

Begin by carefully evaluating the type of greenhouse you own. This is important because the greenhouse structure (be it wooden, metal, or plastic) dictates the suitable door material and design. Also, consider the door’s purpose – whether it’s for heavy-duty use, aesthetic appeal, or enhanced climate control. This assessment will guide you in making an informed decision for either repairing or replacing the door.

Step 2: Source High-Quality Replacement Doors or Repair Materials

Once you have a clear understanding of your greenhouse type and door requirements, it’s time to find reliable sources for either replacement doors or repair materials. Research vendors who specialize in greenhouse supplies, and check for customer reviews to gauge the quality of their products. If you’re repairing the door, look for materials that match the existing structure and offer durability and efficiency.

I will provide some recommended sources further down in the article to ease your search.

Here are the best materials to use on a greenhouse
What Are The Best Materials To Build & Maintain A Greenhouse?

Step 3: Precise Measurement is Key

Accurately measuring your greenhouse door is a critical step. Measure the height, width, and thickness of the existing door or door frame. If the door is irregularly shaped, take note of all angles and curves. These measurements are vital for ensuring that the replacement door fits perfectly or that you have the right amount of materials for the repair. Double-check your measurements for accuracy to avoid any fitting issues later on.

Step 4: Decide If You’re Buying, Building Or Repairing Your Greenhouse Door

Next step is to figure out if you’re repairing it or buying an entire new greenhouse door. Each of these choices has pro’s and con’s.

There are a few things you should consider when you decide to buy or build a new greenhouse door.

Skill Level and Tools:Building a door requires a certain level of carpentry skills and the right tools. If you have the experience and equipment, constructing a door can be a rewarding DIY project, potentially saving money and allowing for customization. If you lack these skills or tools, purchasing a pre-made door is a more practical choice.
Time and Effort:Building a door is time-consuming. If you’re short on time or prefer a quick solution, buying a pre-made door is more efficient. Purchased doors also come with a manufacturer’s guarantee, adding an element of reliability.
Cost:DIY projects can sometimes be more cost-effective, but this is not always the case. Consider the cost of materials, tools, and your time. Pre-made doors might come at a higher price, but they include professional craftsmanship and often materials that might be costly or difficult to source independently.
Customization:If your greenhouse has unique dimensions or you have specific design requirements, building a door allows for customization. Pre-fabricated doors might not always fit your specific needs, especially in non-standard greenhouse structures.
Quality and Durability:Professionally made doors are typically designed to withstand harsh weather and wear, and might come with advanced features like better insulation or security. While a DIY door can be sturdy and efficient, it may not match the professional standards in terms of durability and performance.

Which are you going to do?

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If you decide to repair your greenhouse door then go to step 5.

Want to replace it then go to step 6.

Or If you’re doing the DIY build path for your door then go to step 7.

Here are basic guides for each of the different doors you’ll most likely encounter.

This is a great product that you can use to fix your doors if you have a polyethylene greenhouse.

Recommendation: Vivosun Self-Adhesive Zipper

greenhouse doors

Where To Buy: Amazon

Specs & Features
– 2x Heavy Duty Self-Adhesive Zippers

The VIVOSUN 2-Pack Heavy Duty Zipper is a super handy fix for stuff like greenhouse doors. It’s made of tough plastic-coated metal that won’t rust and is waterproof, so it lasts ages. Plus, it’s got this high-quality Oxford canvas around the zipper which is pretty strong.

It’s a breeze to use: just peel, stick it on a plastic barrier, and cut a slit to make a door. The adhesive is super sticky, even in rough weather like wind and rain. It’s got zippers on both sides, so you can open it from inside or outside.

It’s perfect for fixing up a polyethylene greenhouse door because it’s 7 feet long, so it fits any height, and it’s great for keeping the indoor environment controlled while making it easy to get in and out.

Check Price ➡️ Amazon

Steps To Repair Polyethylene Greenhouse Doors With These Zippers:

  1. Assess the Damage: First, examine the polyethylene door to understand the extent of the repair needed. Look for tears, holes, or areas where the material has come loose from the frame.

  2. Clean the Area: Clean the area around the damage. Remove any dirt, moisture, or debris from the polyethylene surface. The area should be dry and free of any particles that might interfere with the adhesive.

  3. Measure and Cut the Zipper: Measure the length of the zipper against the door, ensuring it extends beyond the damaged area. Cut the zipper to the required length if necessary.

  4. Position the Zipper: Peel off the backing to reveal the adhesive side of the zipper. Carefully position the zipper over the damaged area, ensuring it’s straight. The zipper should bridge the damaged area, allowing you to create a new opening that bypasses the tear or hole.

  5. Apply the Zipper: Starting from one end, press the zipper onto the polyethylene, smoothing it down as you go to avoid air bubbles or wrinkles. Ensure it adheres firmly along its entire length.

  6. Create an Opening: Once the zipper is securely in place, use a utility knife or scissors to cut along the middle of the zipper, creating a new opening. Be careful not to cut beyond the ends of the zipper.

  7. Seal the Edges: If there are any loose edges or tears near the zipper, use polyethylene repair tape to seal these areas. This will reinforce the repair and ensure a more airtight seal.

  8. Test the Repair: Finally, test the zipper to ensure it opens and closes smoothly.

You can also use the following product to re-cover your greenhouse and then add the new door on top of the plastic sheeting.

Recommendation: Polyethylene Film Sheeting

Where To Buy: Amazon

Features & Specs:
– Dimensions of 12′ x 100′

– 6 mm thick and puncture + tear resistant

If you have a wheeled greenhouse door then the odds are high that you can just replace the wheels.

Recommendation: Tyenaza Greenhouse Door Wheels

greenhouse doors

Where To Buy: Amazon

Features & Specs:
– Dimensions of 12′ x 100′

– 6 mm thick and puncture + tear resistant

The Tyenaza Greenhouse Door Wheels are a handy solution for fixing wheeled doors on greenhouses. These 22mm wheel kits work great for hall greenhouses and other models too. The sliding rollers are built to last and make opening and closing the door super smooth. Since they’re made of plastic, they’re versatile enough to fit different types of greenhouses, ensuring your door slides easily.

The bearing component adds stability and keeps things quiet. In the pack, you get everything needed for a quick fix: 2 plastic parts, 2 pulleys, 2 nuts, and 2 seals. So, if you’ve got a wheeled greenhouse door that’s not working right, these wheels make the repair job a whole lot easier.

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Check Price ➡️ Amazon

Steps To Repair Polyethylene Greenhouse Doors:

To repair a wheeled greenhouse door using the Tyenaza Greenhouse Door Wheels, follow these steps:

  1. Identify the Problem: First, check what’s wrong with the door. If the issue is with the wheels or rollers, this kit is perfect.

  2. Gather Your Tools: You’ll likely need basic tools like a screwdriver, pliers, and maybe a wrench.

  3. Remove the Old Wheels: Carefully take off the damaged or worn-out wheels. This might involve unscrewing or unclipping them from the door’s bottom.

  4. Prepare the New Wheels: Unpack your Tyenaza Greenhouse Door Wheel kit. You’ll have 2 plastic parts, 2 pulleys, 2 nuts, and 2 seals.

  5. Install the New Wheels: Attach the new wheels where the old ones were. Ensure they’re securely fastened and that the pulleys are correctly aligned with the door’s track.

  6. Test the Door: Once the new wheels are in place, gently slide the door back and forth. It should move smoothly without sticking or jumping off the track.

  7. Adjust if Necessary: If the door isn’t moving smoothly, you may need to adjust the placement or tightness of the wheels.

  8. Final Check: Make sure everything is secure and the door operates as it should. Double-check all nuts and bolts for tightness.

Remember, safety first! If you’re not comfortable doing the repair, it might be best to call in a professional.

If you need to repair double greenhouse doors then the odds are that you have an issue with glass or polycarbonate which should be an easy fix.

I don’t actually like glass much on a greenhouse, and that’s because this is so much better.

You can use this:

Recommendation: Spectra Glass Alternative

Where To Buy: Amazon

Features & Specs:
– Dimensions of 47.8 x 23.8 x 0.38 inches

– 200x stronger than glass and 30x stronger than plexiglass

greenhouse doors

The Spectra Glass Clear Polycarbonate Sheet, with its 3/8″ thickness, is an excellent choice for repairing glass greenhouse doors. Made in the USA, this high-quality polycarbonate surpasses traditional glass in strength and clarity, while being half as heavy. It’s incredibly strong, more than 200 times stronger than glass and 30 times stronger than plexiglass, making it ideal for a sturdy and durable greenhouse door repair.

The double-sided UV coating prevents yellowing and is weather resistant, ensuring long-term clarity and resilience against the elements. Additionally, its exceptional impact resistance makes it a safe option, while its flexibility and ease of manipulation (it can be cut and drilled as needed) make it convenient for DIY projects.

This product is perfect for those looking to replace or repair a greenhouse door with a clearer, stronger, and more durable material.

Check Price ➡️ Amazon

Steps To Repair Double Greenhouse Doors:

Repairing a double greenhouse door using the 24″x48″ Spectra Glass Clear Polycarbonate Sheet involves the following steps:

  1. Measure the Door Panels: Accurately measure the existing glass panels of your double greenhouse doors to ensure the polycarbonate sheets fit perfectly.

  2. Remove Old Glass: Carefully remove the broken or old glass panels from the doors. Be sure to wear safety gloves and goggles to protect yourself from shards.

  3. Cut the Polycarbonate Sheet: Using the measurements, cut the polycarbonate sheet to the required size. This material can be easily cut and drilled, making it convenient for custom sizing.

  4. Smooth the Edges: After cutting, smooth out the edges of the polycarbonate sheet to prevent any sharpness.

  5. Clean the Sheets: Before installation, clean the polycarbonate sheets to remove any dust or debris.

  6. Install the Sheets: Carefully place the polycarbonate sheets into the frame of the greenhouse doors. Ensure they fit snugly and securely.

  7. Seal the Edges: Use a suitable sealant to secure the edges of the polycarbonate sheets into the door frame. This will prevent air leaks and improve insulation.

  8. Check for Movement: Make sure the doors can open and close smoothly without any obstruction.

  9. Final Inspection: After installation, inspect the doors to ensure there are no gaps and that the sheets are securely in place.

  10. Clean Up: Dispose of the old glass safely and clean up any remaining materials or debris from the work area.

This repair will not only replace the broken or old panels but also enhance the strength, UV protection, and longevity of your greenhouse doors

See also  16 Genius Ways To Insulate Your Greenhouse For Year-Round Growth

Step 6: Buy A New Greenhouse Door (If You Decide To Buy)

Here are two companies that are really solid when it comes to greenhouse doors and you should consider ordering through them:

BW Greenhouse

This is a solid company that is based in Western Canada and they have a pretty large selection of greenhouse doors.

Or the other alternative is:

Growers Supply

They also have a large selection of greenhouse doors and some other goodies.

Basic Steps To Replace Greenhouse Doors:

  1. Choose the Right Doors: First, ensure the doors you’ve chosen are suitable for your greenhouse. They should be the correct size and designed for greenhouse use.

  2. Prepare the Door Frame: Ensure the door frame in your greenhouse is square, level, and ready to receive the doors. Any adjustments or repairs to the frame should be done before hanging the doors.

  3. Measure and Mark Hinge Placement: Measure where the hinges will go on both the door and the frame. Make sure they align perfectly. Mark these spots for drilling.

  4. Attach Hinges to the Door: Screw the hinges onto the door at your marked spots. If your door has pre-drilled holes, ensure the hinges align with these.

  5. Position the Door: With help, lift the door and position it in the frame. Use wedges or shims to keep it in place and ensure it’s level and aligned correctly.

  6. Attach Door to Frame: While the door is held in place, screw the hinges into the frame. Double-check the alignment as you go to ensure the door will open and close smoothly.

  7. Install Door Hardware: Attach any handles, locks, or latches to the door. Make sure they’re positioned for easy use and that they function correctly.

  8. Check the Alignment: Open and close the door several times to check for smooth operation. Adjust as needed for a proper fit.

  9. Seal Gaps if Necessary: If there are gaps between the door and frame that might let in drafts or pests, use weather stripping or sealant to close these gaps.

  10. Final Inspection: Do a final check to ensure everything is secure and operating as it should.

Step 7: DIY Build Your Greenhouse Doors

A complete DIY build of greenhouse doors is beyond the scope of this article, but I’ll give you a basic outline of how to do it.

Here is a good video guide:

Basic Steps To DIY Build Greenhouse Doors:

Building a DIY greenhouse can be a rewarding project. Here are the basic steps to get you started:

  1. Plan and Design: Determine the size and location of your greenhouse. Consider factors like sunlight exposure, wind direction, and proximity to water and electricity sources. Choose a design that suits your needs and budget.

  2. Gather Materials: Based on your design, collect all necessary materials. This typically includes framing materials (like wood or PVC pipes), glazing material for the covering (such as polycarbonate sheets or plastic film), and hardware like screws and hinges.

  3. Prepare the Site: Clear and level the area where the greenhouse will be built. You might need to remove grass, level the ground, and possibly lay a foundation or flooring, depending on your design.

  4. Build the Frame: Construct the frame of the greenhouse according to your design. This could be a simple hoop structure made of PVC pipes or a more complex wooden frame. Ensure the frame is sturdy and square.

  5. Install the Covering: Attach the glazing material to the frame. If using plastic film, stretch it tightly to avoid flapping in the wind. If using panels like polycarbonate, secure them with screws and possibly sealing strips.

  6. Add Doors and Vents: Install doors and vents to ensure adequate ventilation. This is crucial for temperature and humidity control inside the greenhouse.

  7. Set Up Internals: Install any internal structures like shelving, potting tables, or irrigation systems as needed.

  8. Test and Adjust: After construction, monitor the greenhouse for a few days. Check for any issues like leaks, temperature fluctuations, or structural weaknesses, and make adjustments as needed.

Remember, building a greenhouse can vary greatly in complexity based on the design.

Step 8: Maintenance Tips

Congratulations! If you’ve reached this step then you’ve got your greenhouse doors in place – phew that was an effort.

Here are some basic tips on how to maintain those doors so that you don’t have to replace them again.

greenhouse doors
Regular CleaningKeep the doors and their tracks clean. Dust, dirt, and plant debris can accumulate and cause the door to stick or not close properly. Use a soft brush or cloth to gently clean the tracks and door surface.
Lubricate Moving Parts:Apply a silicone-based lubricant to the hinges, rollers, and any other moving parts. This helps prevent rust and ensures smooth operation. Avoid oil-based lubricants as they can attract dirt.
Check for DamageRegularly inspect the doors for any signs of damage, such as cracks in the glass, tears in the plastic, or warping in the frame. Repair any damage promptly to prevent it from worsening.
Tighten Loose Hardware:Over time, screws and bolts may become loose. Periodically check and tighten them to ensure the door is securely attached to the frame.
Adjust AlignmentIf the door is sticking or not closing properly, it might be out of alignment. Check the alignment and adjust the hinges or tracks as necessary.
Inspect and Replace Weather Stripping:Weather stripping around the door helps maintain the internal climate of the greenhouse. Inspect it for wear and tear and replace it if it’s damaged or deteriorating.
Protect Against Rust:If the door or its components are made of metal, check for rust. Treat any rust spots immediately to prevent spreading, using a rust remover or protector.

Regular maintenance not only prolongs the life of your greenhouse door but also ensures a stable environment for your plants.


Greenhouse doors are a crucial component for maintaining an optimal environment for your plants. Whether you choose to repair, replace, or build new doors, following these steps can ensure your greenhouse remains functional and efficient. The process can vary depending on your specific needs and the type of greenhouse you have, but with the right tools and materials, it’s certainly an achievable DIY project.

Regular maintenance is key to prolonging the life of your doors and ensuring they continue to operate smoothly, keeping your plants safe and thriving.

Read this next…
8 Surprising Reasons Why People Are Frantically Buying Polycarbonate Greenhouses In 2024…

Greenhouse Doors FAQs

Can I replace my greenhouse door with any material?

It’s important to choose a material compatible with your greenhouse structure and suitable for the climate your greenhouse is exposed to. Polycarbonate sheets are a popular choice due to their strength, clarity, and UV resistance.

How often should I perform maintenance on my greenhouse doors?

It’s good practice to inspect and maintain your greenhouse doors at least twice a year, ideally before and after the main growing season. Regular checks for damage and cleanliness can prevent major repairs down the line.

What are the signs that my greenhouse door needs to be repaired or replaced?

Look for signs like difficulty in opening or closing the door, visible damage such as cracks or warping, and any air leaks. These indicate that repairs or replacement might be necessary.

What size are greenhouse doors?

The size of greenhouse doors can vary, but standard sizes are usually around 6 feet tall and 2 to 3 feet wide. It’s important to measure your greenhouse’s door frame accurately before purchasing or building a door to ensure a proper fit.

Does a greenhouse need a door?

Yes, a door is essential for a greenhouse. It helps maintain the internal climate by controlling temperature and humidity, provides security, and allows for easy access for gardeners. A well-functioning door is key to the effective operation of a greenhouse.

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Jason Watson

My initial goal was to protect my loved ones from harmful pesticides & help them enjoy nature more. Now, I want to tell as many people as I can about what I've learned... I hope that I can inspire you to help cool our planet with your own little slice of paradise 🌱. Let's do this together!

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