Steel building home
We built a red iron building and framed the interior walls with 2×4 wood. The steel beams provide an 8” gap between the exterior steel and the interior wood. The building has a vapor wrapped insulation for walls and roof. We insulated the wood walls with the recommended fiberglass with the vapor barrier. The ceiling has blown in insulation. We put in the recommended HVAC 2 stage 3 ton 16 seer unit. We live in zone 8 Georgia. Our problem is the air conditioner short cycles so our humidity reads around 60+ % during the hot humid days. It will drop in the low 50 percent range at night when the thermostat is dropped to 70. It stays so cool in the house even on extremely hot days that he air just doesn’t run long enough. The attic is unvented and completely enclosed. I’ve been told we should not have insulated the attic since the roof was insulated because we already had a “conditioned” attic with the vapor barrier wrapped insulation that came with the building package. My question is if we remove the blown in attic insulation, will this help the humidity issue inside the house and will this affect how long the ac runs? I would like to raise the thermostat temperature because it stays really cold in the house but can’t because the humidity rises due to the lack of the Hvac not running long enough. We’ve tried different recommendations by the hvac contractor but nothing has solved the problem. Any feedback would be appreciated.
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