Filtering by:

Ventilation (24)

Ventilation

Ventilation is absolutely vital on a greenhouse. It¹s not just to keep the

greenhouse cool, although that is of course, important. It¹s also to

create a movement of air that helps to prevent powdery mildew and damping

off. The ideal ventilation in a greenhouse would have about twice as many

roof vents as side louvre vents. The roof vents will allow hot air out of

the top of the greenhouse, but if there are no louvres in the side of the

greenhouse these will not perform as well as they could in conjunction

with louvres. The cool fresh air would be sucked in through the louvres

and warm air would then rise easily through the roof vents. One of the

first items on your shopping list for a greenhouse must be automatic

openers for your roof vents. These superb inventions work by heat

expansion alone and will open your roof vents gradually as the greenhouse

warms up. That way you never have to remember to open your greenhouse

vents or close them again at night. All the different models of auto-vent

will lift the same weight of about 7 kg (ample for all our greenhouses)

but the stronger ones perform better in the wind.

Loading...
Sort by:


View all

No products found.

00255
Simplicity Auto louvre opener
£32.00
5 out of 5 stars5 out of 5 stars5 out of 5 stars5 out of 5 stars5 out of 5 stars (12)
00094
Bayliss XL Opener
£33.00
5 out of 5 stars5 out of 5 stars5 out of 5 stars5 out of 5 stars5 out of 5 stars (38)
Save 22%
05494
Bayliss MK7 Triple spring Auto-vent
£49.99 £38.90
Special offer save £11.09
Offer ends on 31/07/2017
Save 20%
02907
Robinsons Auto roof vent opener XL
£54.00 £43.00
Special offer save £11.00
Offer ends on 31/07/2017
5 out of 5 stars5 out of 5 stars5 out of 5 stars5 out of 5 stars5 out of 5 stars (3)
Save 30%
02186
Robinsons Auto 6 slat louvre opener D474
£63.00 £44.00
Special offer save £19.00
Offer ends on 31/07/2017
5 out of 5 stars5 out of 5 stars5 out of 5 stars5 out of 5 stars5 out of 5 stars (1)
Save 24%
04379
Alton Evolution louvre opener
£58.00 £44.00
Special offer save £14.00
Offer ends on 31/07/2017
Save 32%
02910
Bayliss Auto roof vent opener MK7
£65.00 £44.10
Special offer save £20.90
Offer ends on 31/07/2017
5 out of 5 stars5 out of 5 stars5 out of 5 stars5 out of 5 stars5 out of 5 stars (1)
Save 25%
02682
Alton Auto louvre opener for Alton Heritage
£72.00 £54.00
Special offer save £18.00
Offer ends on 31/07/2017
Save 25%
03115
Bayliss MK7 Auto roof vent opener for Alton
£72.00 £54.00
Special offer save £18.00
Offer ends on 31/07/2017
5 out of 5 stars5 out of 5 stars5 out of 5 stars5 out of 5 stars5 out of 5 stars (4)
Save 34%
05496
Bayliss Mk 7 Hydraulicheck Unit
£89.00 £59.00
Special offer save £30.00
Offer ends on 31/07/2017
00053
Simplicity Louvre green finish
£85.00
Only 2 left!
Save 36%
00401
Robinsons 6 Slat Louvre Green
£185.00 £118.00
Special offer save £67.00
Offer ends on 31/07/2017
Only 2 left!
5 out of 5 stars5 out of 5 stars5 out of 5 stars5 out of 5 stars5 out of 5 stars (1)
Save 36%
04730
Robinsons 6 Slat Louvre Ivory
£185.00 £118.00
Special offer save £67.00
Offer ends on 31/07/2017
Save 36%
05872
Robinsons 6 Slat Louvre Old Cottage Green
£185.00 £118.00
Special offer save £67.00
Offer ends on 31/07/2017
Only 6 left!
Save 36%
06053
Robinsons 6 Slat Louvre Pastel Sage
£185.00 £118.00
Special offer save £67.00
Offer ends on 31/07/2017
Only 1 left!
Save 36%
06081
Robinsons 6 Slat Louvre Anthracite
£185.00 £118.00
Special offer save £67.00
Offer ends on 31/07/2017
Only 4 left!
Save 36%
02110
Robinsons 6 Slat Louvre White
£202.00 £129.00
Special offer save £73.00
Offer ends on 31/07/2017
Only 2 left!