The material cost for the above fully sheathed,
weathertight, 24' diameter basic dome structure, with kneewall was approximately
$3000. This does not include greenhouse nor interior finish. Elastomeric paint
was used for the roofing. For a solution I have experienced to
be maintenance free but more expensive, I would suggest "Peel & Seal"
roofing (1-800-882-ROOF).
Links
Fabrication plans for greenhouse attachment (122KB)(shareware)
Note: This type of structure is not for the average American. It requires
patients, perserverance, and good sense to build such a structure.
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Note: All the designs
referred to on this sight were drawn with care & field tested for any detail
oversights, but no warrantees are given with regards to use.