Door Threshold / September 17, 2018 / Martine Letourneau.
Even though steel is extremely strong the threshold still requires to be sealed properly. In parts of the country that constantly suffer from hurricanes you will often see a storm shield garage door threshold seal fitted. These are extra strong and can withstand even the most extreme of weather conditions. Vital if you are located in a hurricane zone. Some may even opt for the lighter weight fiberglass composite garage door. These are less common as they do not provide the level of security that the previous two do. They can be lower in cost though. Whichever of the options you opt for you must ensure that you install a good quality garage door threshold seal.
This protection screws into a wood subflooring to hold it in place and thus cannot be used on sliding doors installed over cement slabs which are commonly used on the west coast. Another option that does work for protecting sliding doors installed on cement slabs is impact-resistant U-board protection. It is a thick heavy weight compressed paper protection that is made from recycled material and is completely reusable. The U-board is placed over the tracks while the door is open and protects sliding door tracks from dirt and grime. As with the plastic protector the Sill Pro keeps the sliding tracks clean and protects the tracks of the door from damage that can interfere with the working operations of the door.
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.
4. THRESHOLDS Although a flush threshold is the most popular option especially for internal bifold doors this may not always be practical in some cases and a conventional raised threshold will need to be used. It is important to note that the height of these can vary considerably with some upvc bifold door thresholds exceeding 125mm. Such a high step-over threshold may create an accessibility issue for children and the older generation. The latest bifold door designs offer raised thresholds designed to minimise the trip hazard with some offering thresholds as low as 50mm high.