Does the type of kerf replacement weather stripping make a difference?

The answer is no, it really does not matter. You just have to keep in mind that you do not need to replace the old weatherstrip with the same type that can easily be upgradeable.

You can replace your present kerf weather stripping with any material you wish. There are 4 basic types available in the market. You can choose from old-fashioned silicone, rope, foam-filled, and the latest advancement in weather stripping being TPE (Thermoplastic Elastomer).

type of kerf replacement weather stripping


Most windows use a ¼” bulb size but older, warped windows may need something a little large. That’s where a 5/16” bulb comes into play.


Which weatherstrip to choose?


Rope – can only be used in very dry areas. Water, snow, and ice will saturate the rope and wear it down quickly. Silicone or TPE – Both of these are relative to one another.

Silicone Weatherseal –


This is a highly resilient material that can be used in a wide range of window sealing applications. It is able to withstand temperatures ranging from a low of -55o C (-67o F) to a high of 300o C (572o F); this makes it ideal for sealing windows in manufacturing and industrial applications.

Thermoplastic Elastomers (TPE) –


TPE is a very versatile material that is flexible enough to be made to fit any application. It is used as a sealing material due to its resistance to the elements and its ability to maintain its appearance in the worst of nature’s conditions. It can be engineered and designed in a variety of colors and shapes.



Foam-filled weatherstripping is your best option when in wet, cold, snowy, and hot areas. Its closed cell properties keep the elements out, including bugs and insects. Although more costly than the hollow bulb, it is the way to go if your budget permits.

Windows are a necessity since they provide light and visibility. As beneficial as they may be, they are also the weakest part of a house due to the fact that they are a poor form of insulation. All windows have some form of seal to prevent heat from escaping and creatures from entering.

Rubber window seals provide a tight, secure seal to keep the cold out and the heat in. They are soft, pliable, and adaptable to any shape, size, and form of window. Don’t let the bad elements destroy your living space.

Easily replace your worn window and door seals


If you are working with kerf slotted windows or doors then Kerfseal brand is your premier choice. Simple to install. Remove your old weather stripping. Cut the new weather stripping to the desired length and push it into the kerf slot.

For the most part, quantities of 25’ or more of our weatherstrip, are spooled while smaller quantities are flat-rolled.

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