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Wooden Greenhouse


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Established Member
12 Feb 2017
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Scotland & France
If you want outdoor durability and a good uniform natural colour with a once only application, I keep recommanding this eco-treatment (no I do not work for the company!). I just find it so good, and it is cheap (not often you can say both those points in the same sentence).
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Established Member
8 Feb 2009
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southampton, UK
We inherited a greenhouse built to almost exactly the 3-page plans above built in cedar. It was a wedding present to our neighbours 67 years ago. It has been moved a number of times and neglected for many years.
Years ago a path was built at the same level as the raised base, this caused the bottom timbers to rot. Other than that it is in good sound condition.
I replaced them with new cedar and built a 2 brick high base for it as given in the original instructions which were given along with the greenhouse.
It has been doing sterling service for the last 2 years an I see no reason that it will not see me out as long as we look after it

clive griffiths

Established Member
12 Aug 2020
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south wales
Hi Greg.

Sum interesting views on here, In the early sixties when my parents were going to get me my first workshop (shed) all the main makers like kencast would be made in cedar that would be my first choice and probably d/fir the second.
What set up did you get with the router as I am going to get myself one in the new year from Peter Sefton.

Lathe User

25 Nov 2020
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South Northants
This may be of some help/ interest.
I am in the process of constructing a 5.5 MT long by 3mt wide alpine house in timber. It’s the same as a greenhouse but full of opening windows to keep Alpines cold and dry not warm and wet!
My choice is WR cedar Joinery grade. Nominal Timber joist sizes easily available are:-
6”X 1”, 8” x 1” and 8” x2”
Local Merchants were, as many of you said , expensive but I found James Lathams after 6 other quotes and got first class service, top grade timber and saved over £1k! That took some believing. There’s also a chap in Birmingham with good prices but I can’t say further than that .
The 32 windows i have already made from Teak , recycled from a laboratory built in 1945/6 and demolished in the late 60’s.
There will be two sliding doors ( I need them open for 9 months of the year) at either end , made in hardwood but totally sheltered from UV and rain . I am Having no luck so far, in finding an affordable double door slide arrangement. They are either intended for home Interior use with plastic rimmed wheels (soaks up water) or heavy duty for farm barn doors and cost a bomb.
To sort the design out I built a 5:1 scale model . A lot cheaper to change ideas when made from scrap off cuts as well as sort out joints. It did add a further 9 days to the project. The finished sections sizes and structure were reviewed by a fully qualified structural engineer (My son).
I will coat the timber using Sikkens . Wipe the timber with meths, I prime coat , 2 top coats . Should last our life time.

This is my second post, my first( a request for advice), 2 days ago, was totally ignored by everyone even though I know there are people on the forum that could help. Not a good start.