Dome Kits and Prices
Steel T-Bar Geodesic Domes
Dome Kits geodesic T-bar frame kits are built up to 24' diameter with 12' high ceilings. This is Dome Kits smallest dome kits at
600 square feet of floor space. The size of most one bedroom apartments or large two car garages.
Dome Kits uses the 4 frequency icosahedrons geodesic frame because they
are flat at the hemisphere or foundation. These structures are light
gauge steel T-bar and rigid foam insulation board cut in triangles to
match the four different triangles shapes.
They can be covered on the outside with synthetic stucco or elastomeric
roofing paint. You can purchase these products at most any hardware
store or drywall light gauge steel stud supply house. The total cost for
materials is under $1500 for structures under 25' in diameter.
You can use a cordless drill or screw gun to screw the frame together. A pair of tin snip scissors to cut the light gauge steel T-bar ceiling grid. A sharp steak knife to cut the rigid foam insulation board and a paint roller with 6' handle for the roofing material.
Any glass shop will cut your triangle windows or you can cut them yourself from unbreakable clear plastic sheets (storm windows). You can also frame in any conventional rectangular windows and frames anywhere in the geodesic structure.
Dome Kits owners options. If you would like the steel T-bar geodesic structure cut and lettered and the rigid foam
insulation cut, lettered and packaged for delivery there will be a manufacturing cost of
$1800 (all the instruction will come with the package). All dome kits are fabricated and assembled at our facility
before shipping with all door and window openings framed to your request.
You can not build an insulated structure with finished interior and exterior in any shape for less. You can not use better materials than steel, rigid foam and synthetic paints.
Dome Kits is part of the Spherical Designs Organization. There are many different
spherical roof designs and prefab structures to choose from manufactured
with light gauge steel or wood. Find a picture or idea you like and we can discuss your needs in greater detail.
Your introduction to low cost dome home building
This is Dome Kits not for profit organization dome kit. All the cord
factors, diagrams, pictures and measurements to build your spherical geodesic structure
are on these web pages. This is the most affordable housing kit available in any shape with finished interior and exterior insulated panels.
The floor system can be built of concrete, wood or steel and should cost about
$900 for the materials. If you would like a floor system prefabricated for your geodesic structure from wood or steel
it would be a $1200 fabrication cost from Dome kits.
Dome Kits - Prices
Light Gauge Steel or Wood
The advantage of using light gauge steel is becoming more apparent every day in the residential housing industry. Dome Kits has been involved with the commercial steel stud industry for over thirty-five years. High
occupancy commercial structures have required the use of light gauge steel studs over wood do to their fire rating, structural integrity over their life and pest resistance. Screws have always been a
superior connection over nails and coated steel and screws are not susceptible
to moisture, rust or mold. The price of wood has continued to rise as the quality has become poorer. The light gauge steel does not
warp or twist so there is less waste. Steel studs are lighter and less labor intensive than wood. For these reasons Dome Kits can offer the same prefab spherical and geodesic housing kits it has offered in wood for the same price.
Dome Kits continues to offer superior engineered designs and lighter more user
friendly construction methods. Both the wood and steel connections have
angles cut on the ends of the struts which is more time consuming to manufacture but offers a stronger and more accurate connection to nail or screw the shear panels (plywood).
Proper nailing or screwing of the plywood shear panel is the most important
part of any dome or rectangular structure. In the areas the building codes are
enforced the inspectors check for proper nailing or screwing. Less screws are require than nails do to superior holding power. For this reason Dome Kits never uses OSB or
particle board plywood on the exterior of their spherical geodesic structures.
Dome Kits continues to use the 4 frequency icosahedrons geometry for all its geodesic dome structures. The
higher frequency is inherently stronger on geodesic structures over forty feet in diameter. There is a great circle or horizontal level line at the hemisphere which makes the connection to the foundation easier and stronger. The national building code requires a 6" wall space for R-19 fiberglass insulation. Dome Kits recommends
rigid foam or spray-on foam for your spherical structure for a higher R-value, moisture barrier and added structural strength at the same cost as fiberglass
batt insulation. Our steel dome kits come with rigid foam insulation with an R-value of 25 or higher.
Dome Kits 30' diameter 4 frequency dome has small triangles under 4' tall.
You can save some money if you cut the triangles and small backing
yourself. There are 5
different plywood triangle shapes to cut and you need 2' pieces to fill in
the triangles for the plywood backing.
2x6 geodesic wood frame - $5,800, plywood backing - $1,600, 5/8 plywood triangles
Dome Kits 40' diameter 4 frequency dome has triangles 5' tall and proper backing is more critical than the 30' dome. This is the most popular size with 1200
sq, ft on the bottom floor and 1100 sq, ft on the second floor. There is no addic space in a dome structure.
That is one of the biggest advantages to the spherical geodesic roof truss.
2x6 wood frame with interior backing - $8,200, 3/4" plywood triangles -
Dome Kits 50' 4 frequency dome has the second level triangles coming across above door and
window header height and the use of the ten sided option that is popular on the smaller domes is not
usually requested. With 25' high ceilings and a total of 3500 sq, ft we
have reached the limit of 4V geodesic wood structures.
2x6 wood geodesic frame and plywood backing - $10,750, 3/4" plywood triangles -
Dome Kits 60' 4 frequency geodesic structures should be made of
light gauge steel. The strut
length and connection in wood are losing their structural abilities to carry
the load. the 4x8 sheet of plywood no longer reaches all three sides of the triangle. This is where our steel frames are
superior. With 30' high ceilings and 5500 sq, ft.
8" steel I-beam geodesic dome truss - $32,000, 3/4" exterior plywood sheathing