Information
Choice of Polythene
Sterilite SuperThermic
Benefits from an 8 year UVI package with a 5 year UVI breakdown guarantee and contains a special anti drip additive (AF) to reduce condensation in the tunnel. It incorporates the latest (MLLDPE) SuperStrength polymer technology to give a film which is stronger and more gale resistant than some films which are up to 50% thicker and with a light transmission of ~88%. Its special temperature control properties (TCF) will keep the tunnel cooler in the summer than other thermic or clear films, and because of its exclusive SuperThermic additive it will be warmer in the winter, extending the growing season into the Autumn and bringing it forward in the Spring. Used by many of the countries organic and exhibition growers it won the Four Oaks Trade Show best new product award 1996 for its ability to reduce Aphids and Whitefly as well as fungal diseases such as downy mildew and botrytis.
SunMaster Diffused
Benefits from an 8 year UVI package with a 5 year UVI breakdown guarantee and contains a special anti drip additive (AF) to reduce condensation in the tunnel. It incorporates the latest (MLLDPE) SuperStrength polymer technology to give a film which is more gale resistant than some films which are up to 50% thicker and with a light transmission of ~89 %. It extends the season in the Autumn and brings it forward in Spring and even though it is not a SuperThermic cover it will give some Frost protection as well. It will also be cooler inside your tunnel in hot weather than clear films. Its ability to allow the same amount of UV into the tunnel as your plants get outside gives speedier rooting, and stronger bushier plants. Research has shown that edible crops grown under full UV conditions contain more antioxidants than crops grown under normal polythene or glass.
SunMaster Clear
Benefits from an 8 year UVI package with a 5 year UVI breakdown guarantee and contains a special anti drip additive (AF) to reduce condensation in the tunnel. It incorporates the latest (MLLDPE) SuperStrength polymer technology to give a film which is more gale resistant than some films which are up to 50% thicker and a light transmission of ~90%. Its ability to allow the same amount of UV into the tunnel as your plants get outside gives speedier rooting, and stronger bushier plants. Research has shown that edible crops grown under full UV conditions contain more antioxidants than crops grown under normal polythene or glass.
We can supply other types of polythene such as, Sunmaster Superthermic which is similar to the sterilite but allows the UV light through, Smart Blue for growth control without the need for chemicals, Smart Green for shade loving plants, Sunmaster Clear when full sunlight is needed. Please contact us for more details.
Timber for the Doors
Tunnels come with Timber Frames, and two roll-up doors as standard. Door widths are listed below or as shown for sliding Doors, when you select the Tunnel.required.
All timber is treated against insect attack and rot.
| For 10', 12' and 14' Tunnels |
| 4no |
3" x 2" (75mm x 50mm) |
7' 6" (2.29m) |
| 2no |
3" x 2" (75mm x 50mm) |
4' 4" (1.32m) |
| 11no |
2" x 1" (50mm x 25mm) |
5' 0" (1.52m) |
| For 16' and 18' Tunnels |
| 6no |
3" x 2" (75mm x 50mm) |
9' 0" (2.74m) |
| 10no |
2" x 1" (50mm x 25mm) |
10' 0" (3.05m) |
All timber tanalised softwood or equivalent
Erecting your Polytunnel
- Mark out polytunnel site and drive in the foundation tubes for each hoop. Dig four sides of a moat trench (not door opening) - one spade deep and a spade wide.
- Trench to be three inches outside the floor area of Polytunnel.
- Complete remaining hoops, brace tubes and ridge tubes
- Make up timber for door frames and fix in position using metal straps supplied (see Working Instructions). ANTI HOTSPOT TAPE can be applied at this stage to protect the cover.
- Cover structure with sheeting, stretch from end to end and secure cover to door frames. Fill in trench, burying a generous overlap of the sheeting. Make up the blind doors and fit to door frame.
- Polytunnels can be erected on concreted or paved areas by concreting the foundation tubes and fastening the polythene to a cladding rail at ground level.
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