Questions?

Door Seals

Through extensive testing of our sound control doors, we identified which door seals deliver the best performance and which do not. We narrowed the selection to only the top-performing options for our customers. Scroll below for a quick overview before exploring each product in detail.

4 Items

Which products do I need to seal a door?

Every door needs one product to seal the sides and top and another to seal the bottom. The exact combination depends on your door type, desired performance, and installation preferences.

  • For sides and top: Use PDS Rubber, PDS Light, or a combination of both.
  • For the bottom: Use a PDS Threshold, Automatic Door Bottom, or both for added performance.

How do I choose the right door seals?

Sides and Top Seals

For most interior doors (wood or steel), either PDS Rubber or PDS Light will work well.

  • PDS Light is more flexible and fits all door types, including slightly bowed or tight doors.
  • PDS Rubber is easier to install and more affordable, but best for doors with about a 1/8" gap between the door and frame. It works best on plumb or nearly plumb installations.

For high-performance doors rated STC 42 or higher, use two rows of PDS Rubber or a combination of PDS Rubber and PDS Light. Typical residential or light commercial doors under 150 pounds do not reach STC 42, but using both products can help compensate for small installation errors.

Bottom Seals

For common interior or exterior doors:

  • Use a PDS Threshold or a semi-mortise or fully mortised automatic door bottom.
  • Mortised options are preferred over surface-mounted seals because they provide full coverage and a cleaner look.
  • If the space under the door is less than ½ inch, use a PDS Threshold.
  • If the space is ½ inch or more, use an automatic door bottom.

For STC 42 or higher doors, using both products together provides the best sound isolation. Again, standard wood or steel doors under 150 pounds are usually below STC 42, but combining both seals adds extra protection against sound leaks.

Do you offer custom sizes for your door seals?

  • PDS Rubber comes pre-cut and can be trimmed on-site with scissors or a razor knife.
  • PDS Light and PDS Threshold should be purchased in full lengths and cut during installation using a chop or circular saw.
  • Automatic door bottoms can be trimmed up to 4 inches in the field and beveled to match the door swing.

We do not offer pre-cut custom lengths because cutting on-site ensures the most accurate fit for your specific installation.