Door Threshold / September 15, 2018 / Leala Melanson.
5. TOP HUNG OR BOTTOM ROLLING Some bifold doors are hung from the top to allow for a minimal threshold at floor level but with all the weight of the door being supported from the top a substantial upgrade of the lintel is normally required for strength and stability. Bottom rolling folding doors are a cost effective and popular alternative since the weight of the door is carried at ground level rather than suspended from the lintel. Whether you decide on an aluminium upvc or hardwood bifold door it is a major purchase for your project and one that should be carefully considered to ensure the very best value for your money.
Several sill manufacturers provide plastic threshold protection that is specific to the model of sill they are selling. Unfortunately heavy duty plastic protectors are not available for every type of entry threshold so the protection is not easy to obtain. There is one surface protection company on the west coast that does inventory plastic threshold protection for two of the most common sill profiles. For protecting sliding door tracks there are two types of threshold protection. The first is a hinged plastic protection that flips over the tracks of sliding doors to keep them clean from debris.
These large protectors are most often purchased in pallet quantities for use on many commercial projects however they are also available in smaller quantities as well. Doorjambs are quite often dented or scratched during construction. There are several types of protection available that snap onto the door casing and protect the jamb. These protectors can be made from molded plastic or cardboard. Pre-molded plastic protection works well for jambs with standard door casing widths. For larger jambs there are several wrap-around jamb protectors that work similarly but are not molded to an exact casing size.
You can have it made from steel wood or even aluminum. They are all effective but all require some sort of seal to fill in the garage door threshold. Here is some information on the various types of garage door available. The material used will determine the type of threshold seal that you require. Wood is probably one of the oldest and most used materials. It certainly has a great deal of charm and is still preferred by many over the more modern metals and plastics of the modern world. They feel that the wood gives a character that the other materials just cannot deliver.