I've mocked up the top section of the "Miriam" greenhouse roof structure at the workshop so I could check the new valley angles. I decided to alter this greenhouse a little to make the glass panels slightly smaller. This does mean all the angles need changing but it's worth doing. I haven't built a "Miriam" for over 6 years and there are a few improvements I'm bringing into the design now.
This greenhouse will also be constructed entirely from accoya. The paint colour is green smoke (from the Farrow and Ball colour chart) which can look very dark on the chart but really works outside - looking much lighter in the photos below for instance.
After all that snow and stormy weather we had a week of great sunshine so I could complete this greenhouse. I made 3 visits here in all - the first to bed the wallplates down and take final measurements of the walls built by others, the next to erect the structure and check the valley glass dimensions. Once the valley glass arrived I made my final 3 day visit to complete. Most of the greenhouse was built and painted in my workshop before I made the first visit.
The whole structure is made from accoya which carries a 50 year guarantee and will not warp, swell or shrink through the seasons- structurally stable and strong.
Thank you so much for making the greenhouse, it's a dream come true and is a glasshouse, greenhouse, conservatory in one.
I look forward to seeing your greenhouses on Instagram so please keep putting them on....I love a before and after story.
Nova and Andrew. X
I turn all the finials by hand myself from stock timber. Did you know they are not just for decoration - they actually perform a really important function....
In high wind conditions/storms a blanket of wind will pass over the top of a building and cause negative air pressure below it – this pulls material out of roofs, and can lift sheds and greenhouses clear off their base. This is very unlikely to happen given the substantial base these greenhouses have. However, it is an extra worthwhile precaution. The finial works by breaking up that blanket of wind and prevent the wind uplift occurring.
You will see the similar function is provided by the small point of metal at the end of aircraft wings – preventing drag - a blanket of wind pulling the wing back. The finial needs to be high enough to stick a finger up into that wind blanket and break it apart.
Click on each