Foam Dressings Explained: Silicone vs Non-Adhesive Dressings

As a podiatrist, I regularly use foam dressings in clinic for a wide range of foot and lower limb wounds. They are one of those products that patients often overlook initially, but a good dressing can make a huge difference to comfort, protection and helping create the right environment for the skin to recover.

One of the most common questions I get asked is: “What’s the difference between a silicone foam dressing and a non-adhesive foam dressing?”

The answer really depends on the wound itself, the surrounding skin and where on the foot or body the dressing is being used.

What Is a Foam Dressing?

Foam dressings are soft absorbent dressings designed to help manage wound exudate (fluid leaking from the wound) while cushioning and protecting the skin.

In podiatry, I commonly see them used for:

Skin tears Blistered areas Pressure points, Friction wounds, Areas of rubbing inside footwear General foot wounds requiring protection

Most foam dressings are made from polyurethane foam, which helps absorb excess moisture while still supporting a moist wound environment.

That balance is important because wounds generally do not like being too dry or too wet.

Why Use a Foam Dressing?

One of the biggest advantages of foam dressings is comfort.

Compared to some thinner dressings, foam dressings provide a little cushioning and protection from pressure and friction — which can be particularly helpful on the feet where there is constant rubbing from footwear and weightbearing.

I often find patients tolerate them very well because they are:

Soft Flexible Relatively low profile Comfortable inside shoes Easy to apply and remove

Silicone Foam Dressings

Silicone foam dressings include a gentle silicone contact layer designed to adhere to the surrounding dry skin which makes dressing changes easier however they still require tape, bandaging or another fixation method to hold them in place.

In clinic, I often use silicone dressings where:

The skin is fragile

Dressing changes may be uncomfortable

We want the dressing to stay securely positioned

The wound is in an area exposed to movement or friction

One of the biggest benefits is that they are usually easier to remove with less trauma to delicate skin.

For many patients — especially elderly patients or those with fragile skin — this can make dressing changes much more comfortable.

Example:

Walker’s Nu-Por Foam Silicone Dressing 5cm x 5cm

This dressing combines:

absorbent foam a gentle silicone layer cushioning protection and a flexible design suitable for many foot and lower limb wounds.

Non-Adhesive Foam Dressings

Non-adhesive foam dressings do not stick to the skin and also require tape, bandaging or another fixation method to hold them in place.

These are often useful when:

The surrounding skin is very delicate

Adhesives are not tolerated well

Larger coverage areas are needed

Frequent dressing changes are required

I also sometimes prefer non-adhesive dressings when I want more flexibility with how the dressing is secured.

Example:

Walker’s Nu-Por Foam Dressing (Non-Adhesive)

This is a soft absorbent polyurethane foam dressing designed to help manage wound exudate while cushioning and protecting the area.

Because it is non-adhesive, it can be a good option for people with sensitive or fragile skin.

Are Foam Dressings Waterproof?

This is probably one of the most common misconceptions.

Foam dressings are not truly waterproof. While the outer layer may help stop wound fluid soaking outward through the dressing, if the dressing becomes wet externally it should be changed as soon as possible.

How Often Should Foam Dressings Be Changed?

There is no single answer because it depends on:

The type of wound the amount of exudate where the wound is located and advice from your treating health professional.

Some dressings may last several days, while others need more frequent changing.

Which Dressing Is Better?

Honestly, neither is universally “better” — they are simply useful for different situations.

In clinic, I choose dressings based on:

skin condition wound location exudate levels patient comfort footwear and how easily the dressing needs to stay in place.

As a very general guide:

Silicone foam dressings are often useful where gentle adhesion and easier dressing changes are important. Non-adhesive foam dressings can work well where fragile skin or customised fixation is preferred.

Final Thoughts

A good dressing does more than simply “cover” a wound. In podiatry, we are constantly trying to balance:

protection moisture control pressure reduction and patient comfort.

Foam dressings can be a very useful part of that approach, particularly for feet where pressure and friction are difficult to avoid completely.

If you are unsure which dressing may be most suitable for your situation, it is always worth discussing it with your podiatrist or healthcare professional.