All about Overlap Percentages



PVC strip door is made up of flexible vinyl strips that are mounted to the top of a doorway and overlapped in a specific pattern to provide an adequate seal of the door opening. Depending on the size of PVC strips used in the application, there can be a few different options for strip overlap. It’s simply a function of how the strips are configured. All strips have a “2 inches on center” hole pattern at the top of the strip, which is a perfect match with the mounting hardware. By installing strips closer together, we are increasing the percentage of overlap.

For example, here we see a strip door kit using 8” width strips with a 50% overlap. You can see that the 2 inches on the left and 2 inches on the right are overlapped.

By adding some additional PVC strips and repositioning them side by side, it’s possible to create a 100% overlap. 100% overlap means, that there are 2 layers of strips all the way across the doorway.

Our most popular strip overlap percentages are given here:

4” strips: 100%
6” strips: 67% (also available: 100%)
8” strips: 50% (also available: 100%)
12” strips: 67% (also available: 33% or 100%)
16” strips: 50% (also available: 25%, 75% or 100%)

However, some applications require a higher percentage of overlap:

– Loading dock or exterior doorways with excess wind
– Interior doorways with high levels of negative or positive air pressure
– Temperature control applications where energy savings is critical
– Taller doors where sealing the doorway could be challenging

PVC strip door can be a very effective way of sealing off the airflow if we use the proper strip overlap percentage.
For help choosing the right overlap or anything else reach out to us at info@www.clearwaydoor.com.