FyberMat™ reinforcement pack for the FyberLok™ Plus Kit

FyberLok™ kit tools: brushes, roller, scissors, spreaders and stir sticks

Finished FyberLok™ shower base ready for tile

FyberLok™ Plus Shower Waterproofing Kit (Covers up to 55 Sq. Ft.)

$549.99

Shipping calculated at checkout.

FyberLok™ Part A and Part B liquid components (pre-measured for your kit size)
FyberMat™ reinforcement (pre-measured for your coverage area)
FyberFil™ filler powder
Mixing cups (10) · Gloves (5 pairs) · Mixing sticks (5) · Sandpaper (1) · Scissors (1) · Filler bags (2) · Tape (1 roll)
FyberLok Install Portal access: step-by-step install videos (scan the QR code on your kit)

Use a standard thinset made for tiling over fiberglass surfaces. FyberLok™ is tile-ready in 12–24 hours, depending on temperature. Our thinset picks are in the Install Portal.

FyberLok provides the waterproofing layer beneath tile over the prepared shower floor, lower walls, curb and planned features. It does not replace the required supporting construction or create the shower pitch. Review your surfaces and drain arrangement before installing.

No. You'll need a tape measure and a utility knife. Everything else comes in the kit.

Yes. FyberLok™ is tile-ready in 12–24 hours, depending on temperature. Then you tile right over it with a thinset made for fiberglass surfaces. Our picks are in the Install Portal.

FyberLok™ bonds into your shower and forms one solid waterproof shell under the tile. Think Fiberglass has installed this system on real jobs for over 25 years. Follow the steps in the Install Portal and it's built to last.

⚠️ WARNING: This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm. For more information, visit www.P65Warnings.ca.gov.

Which FyberLok™ kit do I need?

Enter your shower base size. Add a seat or niches only if you have them. Leave those fields blank if you don't.

1. Shower base

Measure floor wall to wall (length × width). We add 20″ to each floor dimension for walls, curb, and the lip onto the bathroom floor.

Length

ft in

Width

ft in

2. Seat (optional)

Built-in bench or seat? Enter height, width, and depth in inches. Leave blank if none.

Height (in)

Width (in)

Depth (in)

3. Niches (optional)

Soap niches? Enter each opening's height × width in inches. Leave blank if none.

Niche 1 height (in)

Niche 1 width (in)

Niche 2 height (in)

Niche 2 width (in)

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Check with your local building department before installing. Questions? Call (845) 494-6277 · Think Fiberglass · Stony Point, NY

Sized for most standard walk-in showers, the FyberLok™ Plus Kit covers approximately 55 sq. ft. Seats, niches and bathroom-floor extensions add coverage and need to be included in your measurements.

FyberMat™ is fully saturated with FyberLok™ Part A and Part B liquid components to create a continuous waterproof shell. Overlaps bond into one solid shell. The system covers the prepared floor, lower walls, curb and planned features beneath tile.

Key Benefits:

Right-Sized Coverage: up to 55 sq. ft. of total treated surfaces
Layout Planning: review seats, niches, curbless entries and the drain connection before ordering
Keeps Projects Moving: tile-ready in 12–24 hours, depending on temperature
Field-Proven: built on 25+ years of professional installation experience
One Solid Shell: overlaps bond into one continuous waterproof layer

Check local shower waterproofing requirements before installing. Use the Shower Layout Guide to plan surfaces and the drain connection.

Trusted by Contractors & Homeowners

Feedback from contractors and homeowners who trust FyberLok.

"Nothing but the best. 13 years ago had my shower done. Hasn't cracked or leaked."

Mike C

"20 years in my 2 houses with 7 showers, 1 laundry room, and 2 outdoor patio decks. Priceless!!"

Dom D

"Excellent work and price"

Ron A

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