Have a question about Haygrove Garden Tunnels?
We've compiled a list of our customers' most asked questions, and provided comprehensive answers.
Frequently Asked Questions
What size can I have?
Three widths; 2m, 3m or 4m wide. This equates to 6’6’’, 9’8’’ or 13’1’’
Lengths are built in 2m (6’6’’) modular sections. Therefore you can
have 2m, 4m, 6m, 8m etc long
How tall are the tunnels?
At the apex - all between 2.3m and 2.5m depending on the width.
At the sides – all 2m tall, which means you can work right to the edge
of the tunnel without bending over
What are the door options?
You have a choice to select a door for one end or both ends. All doors are made in steel and are extra wide so large wheelbarrows, garden machinery and wheelchairs are accessible.
How long will the plastic last?
The plastic is guaranteed for 5 years against UV degradation. It is
strong enough to sit on the tunnel without it breaking so should last
much longer than 5 years.
What happens if the polythene gets damaged?
The only real way that the polythene will tear is if someone cuts it with a knife or a very heavy objects falls on it. If you do get a tear we can supply a polythene repair kit.
Will the steel rust?
No, all the steel is galvanised including the anchors that are driven into the ground. The steel frame should last at least 15 to 20 years depending on how close you are to the sea.
How do you secure the plastic onto the steel frame?
At each end the plastic is secured onto the gable ends using sprung steel hoop clips. At the base the plastic is zip locked into a steel channel. These are both proven technologies used in the commercial greenhouse business.
How resistant is the Tunnel to wind?
We have built the structure to be very strong. For example for the 3m wide Tunnel, the equivalent structure from First Tunnels is built using 25.4mm diameter hoop steel. We use 40mm steel. The tunnels are built to withstand at least gale force 60mph or 90 km per hr winds
How resistant is the Tunnel to snow?
The Tunnels are built to withstand any normal snow storm that occurs in the UK. We do recommend that snow is brushed off the Tunnel as a precaution to stop any further build up later.
How is the structure anchored to the ground?
No concrete or foundation work is required. The structures are anchored using 3mm x 800mm (2’6’’ long) reinforced galvanised steel bars that are driven into the ground. There are 4 of these anchors for every 2m section.
How much does a replacement cover cost?
The covers are about 20% of the cost of the Tunnel.
Can I buy extras later?
Yes, potting tables and trellising systems can all be retro-fitted and
purchased later if required.
Can I move the Tunnel?
Yes, amazingly you can! Because the Tunnel is built on a steel skid, you just need to lift out the anchors and then the whole tunnel can be relocated if required. If you don’t believe us look at this picture! The tunnel in the picture was 4m wide and 8m long and it took 2 men per section to carry from one location to another.
What can I grow in my Tunnel?
Flowers, vegetables, fruit – pretty much anything. For many crops, such as strawberries it is possible to extend the growing season from 6 to 8 weeks to 22 to 24 weeks.
Can I use heat?
Yes, the plastic will withstand heat. For the best results we would recommend that the a plastic baffle or false wall is dropped from one hoop inside the tunnel to create a more confined space for more efficient heating.
Any more questions?
Then please just give us a ring on 0845 269 6395