Why the R-Value of a Cold Storage Dock Door PANEL is NOT enough! There are many factors that come into play when using R-values to compute heat loss for a Dock Door.
Thermostop Energex Mark III & Mark IV doors are being offered in 3″ (R-24) and 4″ (R-32) thicknesses and are thus the best insulated doors of the industry.
The Panel Joint
Thermostop Energex Mark III & Mark IV doors offer a deep tongue-and-groove joint with two (2) bubble seals that stop all air penetration through the panel joints
The Thermal Break
The Thermostop Energex doors Thermal Break, made of non-conductive plastic material, is 1-3/4″ thick for the 3″ doors and 2-3/4″ thick for the 4″ thick doors and eliminates all energy loss due to conductivity.
Energex bottom Seals
The Energex bottom Seals, double, ensure airtightness at the bottom of the door.
Energex Top & Side Seals
The Energex Top & Side Seals, in triple lips, prevent and eliminate energy losses at the perimeter of the door.
So if energy savings is important to your customer they should consider the overall R-Value of the door in that opening. Dock doors on Refrigerated warehouses represent a significant portion of that building wall.