XTREME MATS Waterproof Undersink Mat 22 in x 19 1/4 in - Leak

In this review of the XTREME MATS Waterproof Undersink Mat the bottom line is simple: it is a practical, heavy-duty cabinet liner for anyone who wants reliable leak protection under sinks and on shelves. The mat's most important advantage is its containment capacity and raised side walls, which hold spills and prevent water damage to cabinetry and floors. Installation is straightforward and the flexible low-density polyethylene construction lets the mat be fed through tight openings and then return to shape, making it a versatile driptray and shelf liner for kitchens, bathrooms, vacation homes, and rental properties.

Key Features

• Perfect Fit: Designed in two lengths so the L x 22 in size suits kitchen cabinets while the L x 19 in size fits bathroom vanities cleanly and predictably.
• High Capacity: The mat can hold up to 3.6 gallons of liquid so small leaks or product spills are contained and do not reach cabinet bases or floors.
• Flexible and Durable: Made from waterproof, low-density polyethylene that is sturdy enough to support gallons of water yet flexible enough to install through small cabinet openings.
• Leak Control Design: Features raised, angled side walls and a textured surface to keep stored items elevated and prevent them from getting wet in a leak.
• Low Maintenance: The mat is easy to clean and remove for quick clean-up after spills or for routine cabinet maintenance.
• Safe Materials: Produces no toxic VOCs and is engineered to be a reusable driptray, under sink mat, and shelf liner all-in-one.

Who It's For

This mat is best for homeowners, renters, and property managers who want a simple preventive solution to protect cabinets and floors from plumbing leaks, chemical spills, or messy under-sink storage. It is especially helpful in vacation homes or rental units where periodic inspections may miss small drips that turn into costly damage.

Those who should look elsewhere include shoppers who need a custom-shaped liner for cabinets with floor-mounted plumbing that will not allow a flat mat without cutting, or buyers wanting integrated electronic leak detection (the mat requires a separately sold water sensor if desired). If supply lines or drains come up through the cabinet floor you will need to measure and possibly modify the mat before installation.

Pros & Cons

Pros

• Robust containment with up to 3.6 gallons capacity protects cabinets and floors from spills and leaks.
• Flexible yet sturdy material installs through tight openings and returns to shape for easy placement.
• Raised side walls and textured surface keep stored items from sitting in liquid after a leak.
• Simple to clean, remove, and reuse, making it practical for rentals and vacation homes.

Cons

• May require trimming or modification if plumbing protrudes through the cabinet floor, so exact cabinet measurement is necessary.
• Water sensor is not included and must be purchased separately for active leak alerts.

Specifications

Product Type	Under-sink mat / driptray / shelf liner
Size (examples)	L x 22 in (kitchen), L x 19 in (bathroom)
Material	Waterproof low-density polyethylene
Liquid Capacity	Up to 3.6 gallons
Design Features	Raised angled side walls and textured surface
Warranty	Lifetime Limited Warranty against manufacturing defects
Origin	Designed and engineered in the USA

Our Verdict

The XTREME MATS Waterproof Undersink Mat is a practical, good-value solution for preventing cabinet and floor damage from leaks and spills. Its combination of high containment, flexible installation, and durable, VOC-free material makes it especially useful for kitchens, bathroom vanities, rental units, and vacation properties. Buyers should measure cabinets for floor plumbing before ordering, but for most standard under-sink setups the mat is an effective, low-effort safeguard.

Frequently Asked Questions

Will the mat fit every cabinet?
The mat comes in common lengths for kitchen and bathroom cabinets but you should measure inside the cabinet and check for plumbing coming through the floor; some installations may need trimming.

Can the mat be cleaned easily?
Yes, the low-density polyethylene surface wipes clean or can be removed for a quick rinse and reinstalled once dry.

Does it include a leak sensor?
No, a water sensor is sold separately; the mat itself is a passive containment solution with a separate sensor recommended for active alerts.