| Author | Message | ||
| Greg Roberts (Gregeagle20) (172.171.153.238)
Rating: N/A |
Ok guys, I am going to build a two level flat ceiling and I am contemplating what material to use to frame the ceiling. Considerations are weight, heat transfer, and then cost. This leaves me with steel or wood. Aluminim and fiberglass are very expensive. What have you guys used to support your ceiling panels on flat roofs? | ||
| David Anderson (168.215.176.133) Rating: N/A |
I welded tabs to the longerons of the bus at the roof. Then welded angle to the tab bottoms at the distance I wanted my ceiling from floor. These ran the length of the bus. On the angles I welded flats across the bus at one foot on center. I will attach my ceiling to the flats. I used all 1/8" thick material. The reason I did it this way is to get a 2 1/"2 inch duct between the roof and ceiling. After the duct was installed I had the duct spray foamed on all four sides to avoid condensation. The duct bottom is 1/8" above the flats at the ceiling. I welded the flats after insulation. Be careful!! That foam will burn. Had to use a metal shield to weld around that foam. It is all in place, but I have not installed my finished headliner. I have many options because I have those flats to attach my material. The framework looks really good. nice, straight, and flat. | ||
| Greg Roberts (Gregeagle20) (172.143.79.223)
Rating: N/A |
Your design sounds a lot like what I have in mind. I am leaning toward steel too. The only thing I don't like about using steel with this desing is the increased heat that will be transfered from the roof down through the conductive steel and into the ceiling panels. I am not sure if this is even worth concern as far as increase cooling load. Does anyone have any experience with this type of design? | ||
| Jim Ashworth (Jimnh) (172.135.201.248)
Rating: N/A |
Another successful method is to screw 1/2" plywood to the roof ribs using self drilling/self tapping wafer head screws and then staple 3" square plywood blocking to the ceiling ply. Use as many layers of ply as needed to get the duct depth and space them as needed to support the finish ceiling. Strips can also be used along cabinet fronts to screw them to the ceiling. Stapling is better than most think. The glue used to hold the staples together in the box is heat activated when driven into wood. On cooling the staple is darn near unremoveable. For the finish ceiling, use 1/4" luan to provide a good base for gluing the vinyl/carpet etc. After the ceiling is done, blocks can be found reliably with a stud finder. Jim | ||
| Jack Conrad (Jackconrad) (204.193.117.66)
Rating: N/A |
I made up "ceiling rafters" using 1 1/2" x 1 1/2" x 1/8" angle iron. These were then welded to the top of walls only (less chance of thermal transfer). Rather than try to explain, you can see some photos at http://members2.clubphoto.com/jack217421 Just click on the "Orange Blossom special II" album. Jack | ||
| MCI-96A2 (65.80.148.145) Rating: N/A |
Jack, Where is the Orange Blossom II Album? All I saw was GM 4106, Lightning C Ranch, MCI MC-8, & Sojourner A Total Transformation. Regards, MCI-96A2 | ||
| Jack Conrad (Jackconrad) (204.193.117.66)
Rating: N/A |
Sorry about that, I should have said MCI MC-8 album. Jack | ||
| C. Ray Powell (Raypowell) (152.163.206.211)
Rating: N/A |
We welded 1 1/2" flats across ceiling on 16" centers. Will install "christmas tree fasteners" in luan ceiling panels. Glue foam & fabric to luan and install in pre-drilled holes in flats. No fasteners showing on ceiling. C Ray | ||
| R.C.Bishop (128.123.88.14)
Rating: N/A |
Got a picture of that set up, C.Ray? Thanx.  RCB | ||
| Scott Whitney (24.205.230.63) Rating: N/A |
What are Xmas tree fasteners? Scott | ||
| ace (24.28.44.126) Rating: N/A |
Christmas tree fasteners are plastic fasteners shaped like a tree with a blunt point on the trunk end and ridges spaced towards the other end! When you insert the blunt end into a hole, the ridges allow for grip and won't allow whatever it is your trying to hold in place to come apart. Very Good for holding upholstered panels in place on ceilings and walls! They will allow the piece, such as an access panel to be removed and replaced without damage! These work very similar to the way a ring nail works in wood except you don't drill a hole with a ring nail! Hope this helps! Ace | ||
| Tim Jones (Torquester) (12.86.10.163)
Rating: N/A |
Greg, I used 1" light gage tubing. I carried this format to the area above the cockpit and used it to form the support framework for my entertainment system. I welded this to the ribs in the structure before I had the foam applied. I covered all of the tubing with aluminum foil before the foam was applied and it made cleaning much easier (notice that I said easier, not easy). With the foam installed and a white roof, the heat transfer seems minimal. Time will tell, but so far it looks like this will work out very well for me. You can see pictures of this at : http://members6.clubphoto.com/tim393476/guest-1.phtml . hth, Torquester | ||
| C. Ray Powell (Raypowell) (64.12.102.163)
Rating: N/A |
Sorry no pictures. Very good explanation Ace. We used these fasteners for the access ability. C Ray |