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FloFx NoFlo™ Valve Seal

FloFx NoFlo™ Valve Seal

by FloFx
SKU FX-WP-VS
$10.00 - $10.00
$10.00
$10.00 - $10.00
$10.00
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The NoFlo Valve Seal is a pre-formed seal shaped for the shower mixing-valve penetration, bonding into the membrane to close off the large opening the valve body creates. Thinset-applied like the rest of the NoFlo system.

More Details

FloFX NoFlo Valve Seal is a pre-formed seal that waterproofs the mixing-valve penetration in the NoFlo system. Verified from FloFX:

  • Purpose: Seals around the shower mixing-valve body penetration through the waterproofing
  • Why it matters: The valve opening is the largest penetration in a shower wall and a prime leak path if left unsealed
  • Design: Pre-formed and sized for the mixing-valve penetration
  • Bonding: Fleece-backed and thinset-applied, lapped into the NoFlo membrane
  • Use with: NoFlo membrane and banding to complete penetration waterproofing
  • Certified: Part of the ICC-ES PMG-1680 / UPC-compliant NoFlo system; backed by a lifetime warranty
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Shipping Policy

Refund & Return Policy

FloFX NoFlo Valve Seal — Waterproof the Biggest Hole in the Wall

The mixing valve leaves the largest single opening in a shower wall — a big cut-out around the valve body that's a prime path for water to get behind the membrane. Sealing it cleanly by hand is fiddly and easy to get wrong. The FloFX NoFlo Valve Seal is pre-formed for exactly this penetration, so the biggest hole in your waterproofing becomes a reliable, watertight detail.

It bonds into the membrane like the rest of the NoFlo system — fleece-backed, thinset-applied with full mortar transfer, lapped into the surrounding membrane — sealing around the valve body so water can't track behind the wall. It's the penetration companion to the NoFlo Pipe Seal: one handles pipes, this one handles the valve.

Use it with the NoFlo membrane and banding, tied into a FloFX bond-flange drain, for a shower that's waterproofed everywhere it counts — including the valve.

Why Tile Pros Choose It

  • Seals the valve penetration: Closes the largest opening in the shower wall
  • Pre-formed to fit: Shaped for the mixing-valve body, no fiddly hand-sealing
  • Bonds like the membrane: Thinset-applied, lapped into the NoFlo system
  • Pairs with the Pipe Seal: Pipes and valve, both sealed
  • Certified and guaranteed: Part of the ICC PMG1680 system, lifetime warranty
  • The hole you really don't want to leave open: Now it isn't

Pro tip: Lap the field membrane over the valve seal's flange so water sheds onto the lap, and work the thinset for full transfer with no voids around the valve body. Confirm the seal sits flat against the substrate before you set tile over it.