White pop-up gazebo set up on a park lawn, with its guy lines running taut from the canopy to the ground.

Anchoring a gazebo to the ground, without concrete

To secure a gazebo to the ground, drive a T-Block^® screw anchor in under each post and fix the post foot onto its head. For a 3×3 m gazebo four T-Block T4 are usually enough. No ballast and no footings: at the end of the season they are unscrewed and leave no trace.

4 × T4

for a 3×3 m gazebo

No ballast

and no concrete footings

Unscrewed

at the end of the season, leaving no trace

In the photo, a pop-up fabric gazebo: it is held by its guy lines, tied to the screw anchors with an eye bolt.

Why a screw anchor instead of ballast

A gazebo is light but catches a lot of wind. It needs an anchor that holds it firmly to the ground.

It holds in the wind

Wind tends to lift the roof. A T-Block screw anchor also works in tension and keeps the gazebo tied to the ground.

No footings, no ballast

No digging into the lawn and no concrete blocks or weights at the foot of the posts. The structure is fixed straight onto the T-Blocks as soon as they are in.

On a paved yard too

Drill a hole in the paving, screw in the T-Block and fit the gazebo. The rest of the paving stays as it is, just as with carports.

Unscrewed at the end of the season

Unscrewed, T-Blocks leave no trace. They can be reused the following year, even in a different spot in the garden.

Anchoring pergolas, tents and parasols

The principle is the same as for the gazebo; what changes is how the structure connects to the anchor.

Timber pergola in a hillside garden, its posts anchored to the ground with T-Block ground screws.

Fixed gazebos and pergolas

One T-Block under each post: the post foot is fixed onto the head. The same goes for fixed gazebos and shelters.

Tents and tensile structures

The guy lines of fabric roofs are tied to the screw anchors. They go in for the event and are unscrewed when it ends.

Events and temporary structures

Cross base of a large garden parasol on the lawn, fixed with T-Block ground anchors instead of ballast.

Garden parasols

The cross base is fixed to the ground at the corners with four electro-galvanized T1 or T3 screws.

Step-by-step installation

Which T-Block, and how many

These are the rules of thumb our configurator uses. They give a first estimate; the right number depends on the size, the roof and the soil.

Gazebo or pergola 3×3 m

One per post.

Tip: 4 × T-Block^® T4

Larger structures

One per post, with posts no more than 4 m apart. A rigid roof or side panels mean the wind pushes harder.

Tip: T-Block^® T4 and up

Soft ground

In soft clay, silt or peat, take the model from the next series up. The configurator does this for you.

Tip: one series up

Indicative estimate: one of our engineers will confirm it.Ask for a quote

For tensile structures and event canopies, the choice is made on the project: get in touch. Up to the T6 series they are installed by hand: installing by hand with the T-wrench.

Work out your gazebo in the configurator Suitable models

Frequently asked questions

How do you secure a gazebo to the ground so it does not blow away?

A T-Block screw anchor is driven in under each post and the post foot is fixed onto its head. The anchor also works in tension, so it holds the gazebo down when the wind lifts the roof. On pop-up fabric gazebos you can also anchor the guy lines, tied to the anchors with an eye bolt.

How many anchors do I need for a 3×3 m gazebo?

For a 3×3 m gazebo or pergola our configurator assumes four T-Block from the T4 series, one per post. For larger structures, one support goes under each post, with posts no more than 4 m apart. If the roof is rigid or closed with side panels, the wind pushes harder: the configurator asks you about this and takes it into account.

Can a gazebo be anchored on a paved yard?

Yes. A hole is opened in the paving, the T-Block is screwed in through the hole and the gazebo is fitted. The surrounding blocks stay in place and there is no sub-base to redo.

Can they be removed at the end of the season?

Yes. T-Blocks are unscrewed anticlockwise with the same wrench used to install them, and they leave no trace in the ground. Those recovered intact can be reused.

Can I install them myself?

Yes. Up to the T6 series, T-Blocks are screwed in by hand with a socket and T-handle, with no machinery. One or two people are enough for a gazebo or a pergola.

In the garden there are also foundations for garden sheds; for marquees and event tensile structures see the Events page. More answers on service life, soils and permits in the FAQ.

Got a gazebo to secure?

Tell us the size, what roof it has and what ground it stands on: we will tell you which T-Blocks to use and how many.

Use the configurator Ask for a quote