Step 1 measure the length of the greenhouse just under the roof where you are going to install gutters.
Diy greenhouse guttering.
Measuring guttering against the greenhouse.
Alternatively you can purchase gutter guard mesh and install it on gutter yourself.
The free greenhouse plans listed include diagrams illustrations photos written building instructions materials tools list and everything else you need to build your chosen greenhouse.
Step 2 make sure to choose the gutter which has the filter to prevent leaves and debris from getting into the water.
Check your measurements and cut lengths of gutter to fit neatly along each side of your greenhouse.
Attach brackets at regular intervals along the frame positioning each one slightly lower towards the downpipe to make the water flow.