The skill, patience and endurance of people that build their own successful ecosystems has to be commended even if just for taking the initiative. Unfortunately no amount of initiative is going to remove the one difficulty which is cost.
No matter how inexperienced you are, if you are not able to build a lean to greenhouse (or lean to conservatory) cheaply it might be that you are trying to over complicate things. Lean Tos are not difficult to build, especially the free standing ones. You will however, need to get the right materials for the building and this might get a bit expensive if you are not careful.
A mini lean to conservatory or greenhouse is extremely cheap to erect. They are tiny units which can be used in places like flats where there is no, or limited room for a garden. If you feel that you can build a postbox or a dogs kennel then you would most probably be able to build a decent mini lean to.
Take your environment into consideration. In areas that often have heavy rain or wind storms it is probably best to build a sturdy wooden frame and then to cover this with glass panels. Alternatively, because glass doesn’t come cheap, you might find it more cost effective to use fiberglass which has been cut to the correct size. Any lumber yard will have the wood you are looking for and it will not be as expensive as you might think.
On the subject of wood, a wooden greenhouse is probably the cheapest to build if you have decided to do it yourself. Your budget will be in reason whether you build an attached or a stand-alone type just by sticking to wood. Some fiberglass, glass or polyethylene covering as well as a bag of nails and a hammer is all that you should need.
If the area you live in has great weather then polyethylene is both effective and cheap. Wood, on the other hand, will need to be taken care of and this might be in the form of some kind of varnish so that it can stand against harsh weather.
Probably the most expensive greenhouse you can build is an aluminum greenhouse. It is a pain to work with and even though it is a common enough material, it is still rather pricey. These greenhouses are meant to be attached to a garage or house and if you were even thinking about trying to cut costs this way I would suggest to forget it.
One option to consider when you decide to build yourself is a pre-fabricated uPVC lean to conservatory installation although it’s not quite the same as making your own with raw materials. They are not difficult to install (the manufacturer’s instructions are normally very easy to follow), they withstand any weather conditions, you will never have trouble cleaning them or repainting them and they are not expensive to buy. Admittedly they are not as cheap as a wooden one but the little extra expense will ensure that it stands, maintenance free, forever.
Imperial Windows specialise in windows, doors and Conservatories. The lean to greenhouse (or lean to conservatory) is only one of the ranges that we supply. Visit us at http://www.imperialwindows.co.uk