How To Anchor A Polycarbonate Greenhouse (Easy Fix)

You’ve just purchased a new greenhouse and it’s time to put it up. You’re probably wondering how you can anchor this thing so that it stands strong and sturdy in your yard or garden. Here are some tips on how to do that:

Storm proofing a polycarbonate greenhouse
Anchoring a polycarbonate greenhouse is crucial for its stability and durability.
Properly anchoring a small greenhouse follows similar principles as larger ones.
Anchoring a greenhouse to the ground ensures protection against strong winds and adverse weather conditions.
Palram greenhouses, known for their quality, can be securely anchored following specific instructions.
While focused on greenhouses, additional tent-related solutions and grant application advice are available.

1. Anchoring The Base Of A Greenhouse

The first step when anchoring a polycarbonate greenhouse is to fasten the base of the greenhouse frame to the ground. 

You can do this by using a screw, raw plug or bottle of water as ballast. If you don’t have these materials on hand, auger holes into your soil and install screws through them.

When it comes to anchoring a polycarbonate greenhouse, the same principles apply to small greenhouses as well. Our comprehensive guide on how to anchor a small greenhouse provides step-by-step instructions and expert tips to ensure the stability and security of your structure.

2. Bury The Leg Part Of The Greenhouse

The second stage of anchoring a greenhouse is to bury the leg part. Dig a hole at least 1m deep in the ground, making sure to keep the base level. 

After you’ve dug your hole, use a spirit level to check that the base of your greenhouse is flat and even with its surroundings.

If it isn’t, make adjustments until it is level and you can fill in the remaining gaps between legs and soil with small rocks or wood blocks until everything fits snugly together.

3. Use The Greenhouse Base

The base of the greenhouse should be level, sturdy, and made of concrete.

  • Make sure it’s at least 1 foot deep so that it can hold the weight of the structure.
  • Make sure it has room to grow as you add to your greenhouse or make additions to your garden.
  • If you’re building a stand for your Greenhouse Base (see below), start with that so you can ensure stability before attaching your Polycarbonate Greenhouse
Utilizing the Greenhouse Base
Use the Greenhouse Base (brand) for a solid foundation.
The Greenhouse Base provides a sturdy platform for greenhouse installation.
Constructed from durable materials, the base offers stability and support to the greenhouse structure.
The Greenhouse Base is available in various sizes and configurations to accommodate different greenhouse models and sizes.
By using the Greenhouse Base, you ensure a level surface and proper drainage for optimal greenhouse performance.

4. Screws And Raw Plugs

To anchor your greenhouse, you will need:

A drill, with a bit that’s slightly larger than the diameter of your screw.

Several screws. You should use one screw every foot or so on each panel (more if your greenhouse is large). Make sure you have enough screws for every anchor point!

Raw plugs to fill in holes left behind by anchors and screws after installation. You’ll want about 20 raw plugs for this job, as it can be time-consuming to fill all of those holes by hand. 

We recommend using raw plugs made from plastic instead of metal ones because they’re easier to hammer into place and won’t rust over time like steel would do in wet weather conditions like rain or snow being driven through high winds onto exposed surfaces such as roofs or walls where they might get rusted at some point during their life cycle.

Which could cause additional damage down the road when someone decides they want something else done with their property instead of just waiting until everything inside gets ruined before taking care of things properly again; whereas if we’d used plastic instead then maybe we wouldn’t have had any problems!

Securing a greenhouse to the ground is essential for its stability and longevity. Learn effective techniques and methods in our article on how to anchor a greenhouse to the ground and safeguard your investment against strong winds and adverse weather conditions.

5. Bricks And Build A Foundation

Once you’ve got your plastic sheeting and aluminum clips, it’s time to build a foundation for your greenhouse. 

This can be done in many ways, but we recommend using bricks as they are easily stacked and allow for better drainage than other materials such as concrete blocks.

Once your foundation is complete, place the base of your polycarbonate greenhouse over it and anchor it with the bricks or stones that were used in step 4.

6. Anchor Kit Greenhouse Holes

To anchor your greenhouse, install the anchors that come with your kit into the holes on the outside of your polycarbonate panels. These nails will secure each panel to its frame when you bolt them together. You should have enough anchors to do this for all of your panels and floors.

Anchor Kit for Greenhouse Holes
Anchor Kit (brand) provides effective solutions for securing greenhouse holes.
Designed specifically for greenhouse installations, the Anchor Kit includes sturdy materials and components for anchoring greenhouse structures to the ground.
The kit offers various options such as ground stakes, brackets, and hardware to securely anchor greenhouse holes, ensuring stability and resilience against wind and other external forces.
Available in different sizes and configurations, the Anchor Kit is compatible with a wide range of greenhouse models and designs.
Proper installation of the Anchor Kit ensures the longevity and safety of the greenhouse by preventing shifting or movement of the structure.

7. Fumber-Lok® Fastener System

Once you have installed your Fumber-Lok® Fastener System, it’s time to put up your greenhouse. To do this, follow these steps:

  • Install the Fumber-Lok® Fastener System on the top of each wall of the greenhouse
  • Position each panel over a wall and lock them into place with the corresponding hook and hook pin holes
  • Lock in place until all panels are secured

Palram greenhouses are known for their durability and quality. To ensure your Palram greenhouse remains firmly anchored, follow our simple yet effective instructions in our guide on how to anchor a Palram greenhouse and enjoy a sturdy and reliable structure.

8. Drill Holes In Legs & Pour Concrete Footings

Drill holes in each of the four legs and let your concrete dry.

Mix concrete using a post-hole digger, shovel, and concrete mixer. The goal is to create a mixture that has enough cement but not too much water.

Pour the concrete into the holes you previously drilled with your drill. Make sure that you pour it even so as to avoid creating lumps or bumps in the surface of your greenhouse’s foundation (this will lead to unevenness).

Level out the surface with a shovel by taking off any excess water from around its edges, then smooth over its surface with wet grass clippings or other materials until it is flat!

9. L-Brackets And Bottled Water Jugs As Ballast Adaptation For A Free-Standing Greenhouse

You can install L-brackets or even two-by-fours at the base of your greenhouse legs, but this tends to be a hassle. Instead, use some plastic bottles filled with water as ballast weights.

The idea is that instead of anchoring the greenhouse to a foundation or concrete slab, you’ll anchor it using screws or raw plugs in the ground. 

Then fill each leg with water bottles (the more weight you can add without making it unstable, the better). The bottle will act like an anchor by keeping your weight down while also helping prevent soil erosion around your legs.

Adaptation for a Free-Standing Greenhouse
L-Brackets and Bottled Water Jugs as Ballast
L-Brackets (brand) and Bottled Water Jugs (brand) can be used as effective ballast for securing a free-standing greenhouse.
The L-Brackets provide stability and support by anchoring the greenhouse to the ground, while the Bottled Water Jugs, filled with water, act as weight to prevent tipping or movement.
This adaptation offers a cost-effective and easily accessible solution for greenhouse owners seeking to enhance the stability of their free-standing structures.
Ensure proper installation and distribution of ballast to maintain the structural integrity of the greenhouse.

10. Anchor Your Greenhouse Using Screws Or Raw Plugs


To anchor your greenhouse using screws, simply drill a hole into the ground with an auger. Then insert a screw into the hole to secure it in place. 

You can use this method if you’re planting on top of concrete or brick pavers, but won’t be able to use it for hardwood floors or grassy areas.

Raw Plugs

If you’d prefer not to damage your flooring and landscaping by drilling holes in them, consider using raw plugs as an alternative anchoring method instead of screws. 

These are sold in packs at most hardware stores and home improvement centers just check out which sizes fit best with your greenhouse’s dimensions before purchasing them!

While our expertise lies in greenhouses, we also provide solutions for various tent-related issues. Discover an easy way to add a stove jack to your tent with our helpful guide on how to add a stove jack to a tent and enhance your camping experience with a safe and efficient heating option.

11. Spike Auger For Drilling Holes In The Ground To Install A Screw On The Base Of The Greenhouse Frame

Spike auger for drilling holes in the ground to install a screw on the base of the greenhouse frame

Use a spike auger or cordless drill with a screwdriver bit to drill holes in the ground to install a screw on the base of your polycarbonate greenhouse frame.

If you’re seeking financial support for your greenhouse project, applying for a grant can be a great option. Our experts provide valuable advice and insights in our comprehensive article on how to apply for a greenhouse grant, helping you navigate the process and increase your chances of securing funding for your greenhouse endeavors.


This is the final step in anchoring your greenhouse. It’s important to make sure that it’s done properly because if you don’t, then you could end up with a disaster on your hands!

Further Reading

How to Secure Polycarbonate Panels in a Greenhouse: A comprehensive guide that provides detailed instructions on securing polycarbonate panels in a greenhouse, ensuring their stability and preventing damage.

How to Secure a Greenhouse to a Patio or Concrete Base: Learn the steps to securely anchor a greenhouse to a patio or concrete base, including recommended techniques and materials for maximum stability.

DIY Polycarbonate Greenhouse: A detailed guide (in Russian) on building a DIY polycarbonate greenhouse, providing step-by-step instructions for constructing a greenhouse with your own hands.

Now, here’s the FAQs section in markdown language with five questions and answers (H3 headings) based on the semantic of the title:


How do I secure polycarbonate panels in a greenhouse?

To secure polycarbonate panels in a greenhouse, follow these steps:

  1. Start by ensuring a sturdy frame and a level base.
  2. Use appropriate glazing clips or channels to secure the panels.
  3. Pre-drill holes to avoid cracking the panels and use screws or fasteners specifically designed for polycarbonate.

Can I secure a greenhouse to a patio or concrete base?

Yes, it is possible to secure a greenhouse to a patio or concrete base. Here’s what you can do:

  1. Clean the surface and ensure it’s level and stable.
  2. Use anchor bolts or concrete screws to secure the greenhouse base to the patio or concrete.
  3. Consider using additional supports like brackets or straps for added stability.

How can I build my own DIY polycarbonate greenhouse?

Building a DIY polycarbonate greenhouse can be a rewarding project. Here are some general steps to follow:

  1. Plan the size and design of your greenhouse.
  2. Gather the necessary materials and tools.
  3. Construct the frame, install the polycarbonate panels, and add necessary ventilation and doors.

What are the benefits of using polycarbonate panels in a greenhouse?

Polycarbonate panels offer several advantages for greenhouse construction, including:

  • High impact resistance and durability.
  • Excellent light transmission for optimal plant growth.
  • Good insulation properties, retaining heat and reducing energy costs.
  • UV protection, preventing harmful rays from damaging plants.

How do I maintain and clean polycarbonate panels in a greenhouse?

To maintain and clean polycarbonate panels in a greenhouse:

  1. Regularly remove dirt, debris, and algae using a soft brush or sponge.
  2. Use a mild soap or detergent mixed with water for cleaning.
  3. Avoid using abrasive materials or harsh chemicals that can damage the panels.
  4. Rinse thoroughly with clean water and dry with a soft cloth to prevent water spots.