Door Above Floor

Figure 2 floor relative to entry door.

Door above floor.

Means of egress doors in the irc. 2018 irc section r311 3 1 restricts threshold height a required exit door in residences to 1 inches from the top of the the threshold to the floor or landing on each side of the door. A 1 door undercut on smooth flooring does move 140 cfm 3pa as the testing showed but only 60 cfm over carpet and compared to 70 cfm for a 3 8 door undercut over smooth flooring. If the door is equal to or less than 50 percent glass it is considered to be an opaque door.

Quality garage door installation and repair home. For example in massachusetts where i live 521 cmr requires entrance doors in multiple dwellings to have a viewer or sidelight or vision light mounted 60 inches above the floor for some types of units with an additional viewer light at 42 inches above the floor for others. At oregon carpenters we hang hundreds of doors a year so learning how to set them up for proper floor clearance is important. Any other exterior door has a threshold height limited to 7 inches.

Cutting off doors to clear for your new flooring. Most entry door frames have a piece of lumber below the door and combined with the metal threshold will raise the base of the door off the concrete or wood sub floor by approximately 1 1 4 inches as shown in figure 2. However there are times when cutting off doors cannot be avoided especially on home improvement projects where there has been a change in flooring. We are the premier pacific northwest garage door repair and installation company.

Glass doors by definition in the iecc are considered to be those which are more than 50 percent glass in area. The u factor requirements discussed above for vertical fenestration also apply to exterior glass doors. I can email that powerpoint to you if you are interested. We are locally owned and operated licensed bonded and insured.