33
Roof Assembly
9
Before you begin construction of the porch roof you
firstly need to check that your building is square and
level, are the internal diagonal measurements equal?
With so many precision components meeting from
different directions you need to take time now to aid
construction throughout the rest of the build.
Two EV1154M brackets are now attached flush (see
dotted lines) to the end of EV0770 as per diagrams 48
with 25mm CSK screws (4 in total each side). These
brackets will support to the top end of your roof hip
porch bars, you have already installed the brackets
which support the bottom end when you built your
porch return assemblies (diagram 21) . Silicone should
be added between the two ridges to ensure that water
is not drawn through the joint (diagram 47), once the
greenhouse is complete this area is difficult to access
so spend time now ensuring that everything fits tightly
and is sealed. Make sure that the two ridges are flush to
one another and the glazing rebates line-up.
Dia. 48
Silicone
Your porch ridge attaches to the porch gable in the same way that your standard ridge
met the end gables (diagram 41).
Ex
ternal
Diagram 47
EV
11
57
M
EV0770
EV
11
57
M
Top view
EV0770
EV1157M
25mm
CSK
Screws
Diagram 48
FLUSH
FLUSH