OVERVIEW

Exposed drain and water supply piping beneath accessible lavatories must be insulated or otherwise configured to protect against contact. During accessibility inspections across Texas, this is one of the most common deficiencies I encounter—and fortunately, one of the easiest to correct once you understand what the standards require.

WHY THIS REQUIREMENT EXISTS

The purpose of this requirement is to protect individuals from contact with hot or abrasive plumbing surfaces beneath accessible lavatories.

Some wheelchair users may have limited sensation in their legs and may not immediately realize that exposed piping is hot enough to cause burns. The standards therefore require the drain and water supply piping to be insulated or otherwise protected from contact.

There are two common methods of compliance:

Insulate the exposed drain and water supply piping.
Conceal the piping using a protective shroud or panel.

Both methods are acceptable when they adequately protect users from contact.

INSPECTION EXAMPLES

Insulated Piping

Both the drain and water supply piping are protected from contact. This installation complies with TAS 606.5.

Protective Shroud

The plumbing is enclosed, eliminating exposed piping beneath the lavatory.

Protective Panel

This is one of the most common solutions used in commercial buildings. The plumbing is completely concealed while maintaining the required knee and toe clearance.

ADA Accessible Lavatory Insulation Not Installed Correctly

Incomplete Insulation

The drain insulation does not extend high enough and portions of the water supply piping remain exposed.

ADA Accessible Sink Breakroom Missing Panel and No Insulation Provided

Missing Protection

The protective panel has been removed, leaving the plumbing exposed.

ADA Accessible Sink with Panel Exposed Pipe and No Insulation

Partial Protection

The panel protects part of the plumbing, but exposed piping remains below. Would you consider this compliant, or would you note it as a deficiency during an inspection?

TAS REQUIREMENT

606.5 Exposed Pipes and Surfaces. Water supply and drain pipes under lavatories and sinks shall be insulated or otherwise configured to protect against contact. There shall be no sharp or abrasive surfaces under lavatories and sinks.

IN PLAIN ENGLISH

If someone using the sink could accidentally touch the plumbing underneath, those pipes must either be insulated or covered so they cannot cause burns or injuries.