Keep Your Cushions Dry & Prevent Mildew

Item # X-HT-300374

If you’ve ever noticed moisture or condensation buildup beneath the cushions or mattresses in your boat, RV or camper, you’re not alone. This is a common problem, but thankfully there’s an easy solution. By using Moisture Prevention Underliner, you can easily promote consistent airflow beneath a variety of applications to better hinder the growth of mold and mildew caused by perpetual moisture buildup. We’ll explain more about this ingenious material and its incredible variety of uses in your daily life to better dissipate moisture that can cause mold and mildew.

Patterning Moisture Prevention Underliner for use under our boat cushions.

First, let’s explain why Moisture Prevention Underliner is necessary. When you have a cushion or mattress in your boat cabin, RV, truck, camper or tent, it often lies against a cold, flat surface. By itself this isn’t an issue but when you sleep or sit on the surface, things change. Your body produces heat, increasing the temperature of the cushion/mattress but the surface beneath it remains cold, thus creating condensation. Without proper ventilation this condensation can lead to mold and mildew buildup.

Moisture Prevention Underliner is a strong, lightweight product sold in a 60- x 90-inch sheet. At 3/8 inch thick, it is comprised of a unique inner core made from thousands of tiny, hairlike fibers that connect in a honeycomb shaped plate. The result is a stiff, breathable material that maintains its shape without collapsing beneath cushions and mattresses or body weight. This clever underliner acts as a breathable barrier between the item and the surface it's lying on, thus promoting constant airflow. If you can consistently and successfully promote the flow of air beneath such applications, you greatly reduce the risk for moisture, mold and mildew to accumulate. This will help keep your application looking great and increase its longevity and functionality.

A closer look at the composition of Moisture Prevention Underliner.

Here are some ideas for how you can put this material to good use.

  • Beneath cushions and mattresses in your boat cabin, RV and camper to eliminate condensation and moisture buildup.
  • On the shelves of your kitchen cupboards to help dissipate extra water on your cups and dishes.
  • On the bottom of storage lockers to allow ventilation and help keep water from pooling around stored items.
  • Beneath pet beds to prevent condensation.

This material is very useful in storage lockers, as seen here.

Constructing cushions that will come into contact with water means you need to take the necessary steps to ensure moisture doesn’t get trapped within the cushion. Thankfully, Moisture Prevention Underliner can even be placed inside your cushions! You can use this material inside a cushion that is stapled to a backer board. To do this, drill a few equally spaced 1/2-inch holes in the backer board to allow airflow, then place the Moisture Prevention Underliner between the backer board and the cushion foam. Keep in mind that if you’re using silk film on your application, be sure that the underside of the foam is not completely covered in silk film so that you can better ensure breathability.

For outdoor cushions without backer boards, such as exterior boat seating and patio cushions, you can still utilize Moisture Prevention Underliner to aid in water drainage. To accomplish this, place the underliner beneath your cushion foam and sew a breathable fabric (such as Phifertex® Standard Vinyl Mesh) to the bottom of the cushion. By doing so, you increase the chances of water draining and the inside of the cushion will dry more quickly.

To use Moisture Prevention Underliner, simply place the desired cushion, mattress or pet bed on top of the underliner and trace the area with a fabric marking pencil. If you’re planning to insert this material in a storage locker or shelf, measure the desired area with a tape measure or ruler and then transfer your measurements to the underliner. When that’s completed, cut the product with scissors, shake out any excess fibers and place wherever it’s needed. It’s that easy! There’s no right or wrong side, allowing you to nest pieces together to better fit your desired application.

Cutting Moisture Prevention Underliner with scissors is easy!

We hope this blog has helped you gain a greater understanding of the beneficial attributes of Moisture Prevention Underliner. This easy-to-use, breathable material can be placed in many areas of your home, boat, RV, camper, storage locker and more. It’s a simple way to increase airflow and dissipate moisture and condensation while preventing mold and mildew growth. But don’t take our word for it, try out this versatile material for yourself! We’d love to hear in the comments how you’ve put Moisture Prevention Underliner to good use. Or if you’ve thought of any other practical uses for this product, share them with us.