Research; it's not just for geeks.
Modeling BNSF and Milwaukee Road in SW Wisconsin
QUOTE: Originally posted by rails5 I just want to reinforce Greg "Trainwreck"'s observation that "overkill" is NOT the way to go for forced air cooling systems - for exactly the reasons Greg stated. But on the other hand, going a BIT above the rated minimum is good, the equipment won't have to work as hard but it will still de-humidify etc.
Modeling B&O- Chessie Bob K. www.ssmrc.org
QUOTE: Originally posted by rick bonfiglio lothar, stop trying to fool yourself. that building will not be controllable until insulated properly. spray 3" of foam on the ceiling, and put batts in the walls. when i lived in such a structure once, the ice would melt off the ceiling and upper walls; flow down the walls and refreeze about 1/3 the way up from the floor. while the heat was on full blast nonetheless.
QUOTE: Originally posted by loathar I have a 400sq.ft. train building.It has a metal roof and T-1 siding and a cement floor. The underside of the roof gets frosty in the winter and about 140 F in the summer.(middle Tn.) I'm planning on putting a 220v AC/heat/dehumidifier unit in this summer.(the one I'm planning on is good for 1000sq. Overkill is good) NOW, my question, Should I go with a drop ceiling or just slap insulation board to the underside of the metal roof? They are both about the same price. The drop ceiling would be more work, but more visually pleasing and I could put better lighting in closer to the layout. I'm just concerned about its insulating properties.I know I could add blown in insulation above the drop ceiling when it was all done.(I want to maintain a 50F to 90F temp range) I would be putting a 1450 CFM exhaust fan with a thermostat on the roof either way. Any thoughts or comments on which is better?
Jerry SP FOREVER http://photobucket.com/albums/f317/GAPPLEG/
QUOTE: Originally posted by juby4life I normally don't post here any more but this thread has me a bit concerned. I would be very careful with what you use here. Make sure you use very light materials. I would not use sheet rock here at all. By the looks of the building it is probably not designed to have that kind of dead load placed on it. You don't want it to come down after all that work. My suggestion is to use a spray foam type of of insulation and possibly use some type of moisture resistant material for the ceiling material. Maybe glue blue board between and on the metal rafters and paint it. This way you'd have a vaulted ceiling thus more head room too. Remember that moisture is enemy number one to structures and metal ones are no exception. Whatever you do make sure the ceiling is either air tight (by using the foam) or have some sort of ventilation up there. Also if you get ANY snow I would definetly not attach sheetrock to the rafters. Don't ru***his part of your construction phase. Every hole made in the rafters compromises the structual integrity of the member. Many years in the truss industry taught me that. Other then that I'd use Tyvek or similar brand vapor barrier on the walls and sheet rock could be used there. What are your plans for the electrical? Jeremy