Inflating

Getting your Fendertex fender to the right pressure is the most important step. Under-inflation is the most common mistake — an under-inflated fender won't perform as intended and may shift during mooring.

Standard Halkey-Roberts valve

A compatible pump attachment is included with every order, so you're ready to inflate straight out of the box.

Inflate to 350 mbar

For smaller fenders, a manual pump is sufficient. For larger fenders, an electric pump will save time and effort.

Close and secure the valve

Once inflated, Fendertex fenders hold their pressure reliably — no need for regular top-ups or pressure checks between uses.

Deflating

Push the valve down and twist

Starting from the opposite end, roll the fender firmly toward the valve. Continue rolling to push out all the air.

Close and secure the valve

Storing in a bag is recommended to keep fenders clean and protected between uses.

Ballasting for Heavy Wind

Because Fendertex fenders are significantly lighter than conventional inflatables, strong winds can push them around — or lift them onto the deck entirely, leaving your hull unprotected. Ballasting solves this in seconds.

  1. Deflate the fender completely
  2. Pour fresh water directly into the inner bladder through the inflation valve
  3. Follow the recommended amounts based on your fender size:
  • C62 to C73 — 0.5 to 1 litre
  • C84 to C124 — 1 to 2 litres
  • C145 to C248 — 3 litres

Re-inflate to the recommended pressure of 350 mbar / 5.1 PSI

Machine Wash at 40°C

For a quick clean, a hose down or hand wash is all that's needed between uses. For a more thorough clean, the fenders can go straight in the washing machine.

  • Do not bleach
  • Do not tumble dry
  • Do not iron

Replacing the Inner Bladder

If your inner bladder needs replacing, the process is straightforward. Take your time on reinstallation to ensure the bladder is correctly aligned before inflating.

Removing the bladder

  1. Fully deflate the fender and close the valve cap
  2. Using your thumbs on the D-rings, pull the textile away from the inflation valve
  3. With your remaining fingers, push the inflation valve upward from the bottom until it clears the textile layer
  4. Pull the entire bladder out through the opening

Reinstalling the bladder

  1. Roll both sides of the inner bladder inward toward the centre until it matches the diameter of the textile opening
  2. Insert the bottom of the bladder into the textile layer — do not twist or fold
  3. Slide the bladder fully into the textile layer
  4. Align the sealed edges of the bladder with the sewn edges of the textile layer, keeping the orientation consistent
  5. Position the inflation valve just below the hem of the opening, level with the hem seam
  6. Inflate the fender — this will fully seat the bladder into position

Common Questions

Can I use a regular pump?

Yes — every Fendertex fender uses a standard Halkey-Roberts valve, the same valve found on SUP boards. A compatible attachment is included with every order. For smaller fenders a manual pump works fine; for larger fenders an electric pump is recommended to save time and effort.

What happens if I over or under inflate?

Under-inflation is the more common issue and should be avoided — an under-inflated fender won't perform as intended and may shift during mooring. If you've slightly over-inflated, simply release a little air through the valve. A fender that's a little firm is better than one that's too soft.

Can I leave my fender inflated for the whole season?

Yes — there's no need to deflate between uses unless you want to. Fendertex fenders hold their pressure reliably and won't require regular top-ups.

How do I know if my inner bladder needs replacing?

If your fender is losing pressure, the inner bladder is likely the cause. Fendertex fenders are designed to hold pressure without leaking, so any noticeable pressure loss is a sign the bladder should be inspected and replaced.

Can I use salt water for ballasting?

Fresh water only. Salt water can damage the inner bladder over time.

How often should I clean my fenders?

As needed. A quick hose down is usually sufficient between uses. For a deeper clean, machine wash at 40°C — no bleach, no tumble drying, no ironing.

What do I do if my fender loses pressure?

Check the valve first to make sure it's fully closed. If the pressure loss continues, the inner bladder likely needs replacing. See the replacing the inner bladder section above for full instructions.

Can I inflate my fender while it's still wet?

Yes — no need to dry the fender before inflating.