greenhouse or polytunnel

 

My greenhouse needs replacing, the big ones are expensive so I am
considering a polytunnel instead. I have plenty of room so finding somewhere
to put it will not be a problem.

I would welcome any comments that will help me make up my mind greenhouse or
polytunnel ?

kate

 



Polytunnels:
£/sq.m  is a lot less.
Light transmission gets less each year as the plastic goes milky in colour.
Harder to ventilate, a door at each end vital. Hot air rises and unlikely to
have high level ventilation.
Doesn't need a brick base.
Quick to erect.

Greenhouse:
£/sq.m  is a lot more.
Good light transmission.
Easy to replace a damaged pane.
Needs some sort of base.
Better heat retention (greenhouse effect and all that).
Not quick to erect.


Glad it's not me deciding!

mark

 

wrote:


I hadn't realised greenhouses could burn until several commercial ones went up
in flames last night. The green houses had been used to store cardboard and
plastic boxes, the cause of the fire is a mystery ( hint:insurance?)
In the land where public swimming pools are burnt to the ground nothing is
impossible.
--

Martin

 



You can compromise, and put together one out of Twinwall polycarbonate.
This won't be as cheap as a polytunnel, but will have better heat
retention than glass.

Or, if you cover loosely your polytunnel, then cut some pipe insulation
lengthways (most is already scored), press it over the hoops so that the
polythene is squished in and tightened, tape it in place, then cover
that lot with another layer of polythene, you get a 'double-glazed'
effect.

--
Rusty
Growing old is mandatory; growing up is optional.
Direct reply to: horrid dot squeak snailything zetnet point co period uk

 


somewhere

greenhouse or

An interesting discussion here on the very topic:

 http://tinyurl.com/d78tl8

Regards,
Emrys Davies.