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Waterproofing Accessories

Seal Every Joint with Trusted Waterproofing Solutions

Find essential waterproofing components designed for reliable tile installation in wet areas. This collection features durable pipe seals, mixing valve seals, corner pieces, and banding—all built to support effective moisture protection. Whether you're installing with GoBoard, Hydro-Blok, Wedi, or GURU, these waterproofing accessories ensure secure, watertight performance. Perfect for showers, bathrooms, and other high-exposure areas, every product here supports a professional-grade finish from prep to tile.

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GoBoard 4-1/2" Mixing Valve Seal, Back
GoBoard 4-1/2" Mixing Valve Seal, Front Save $1.73 Save $0.00

GoBoard® Mixing Valve Seal for Waterproofing Shower Valves

Johns Manville
$18.00
$18.00 - $18.00
$18.00
$16.27
$16.27 - $16.27
$16.27
28 in stock!

The GoBoard® Mixing Valve Seal is a critical waterproofing component designed specifically for sealing around shower mixing valves in GoBoard® wate...

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$18.00
$18.00 - $18.00
$18.00
$16.27
$16.27 - $16.27
$16.27
Save $1.73 Save $0.00
GoBoard 1/2" - 3/4" Pipe Collar Package, Front
GoBoard 1/2" - 3/4" Pipe Collar Save $1.37 Save $0.00

GoBoard® 1/2" - 3/4" Waterproof Pipe Collar

Johns Manville
$14.24
$14.24 - $14.24
$14.24
$12.87
$12.87 - $12.87
$12.87
17 in stock!

The GoBoard® 1/2" - 3/4" Waterproof Pipe Collar is engineered to seal pipe penetrations for shower heads in walls and ceilings before tile installa...

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$14.24
$14.24 - $14.24
$14.24
$12.87
$12.87 - $12.87
$12.87
Save $1.37 Save $0.00
Guru Water-Stop Inside Corners product image
Gurus Water-Stop Inside & Outside Corners Save up to $5.21 Save $0.00

GURU Inside & Outside Water-Stop Corners

GURU USA
$19.21
$19.21 - $19.21
$19.21
$14.00 - $16.75
$14.00 - $16.75
$14.00
20 in stock!

GURU USA's Water-Stop Inside & Outside Corners are designed to create a waterproof seal in shower corners. This 2-pack makes waterproofing easi...

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$19.21
$19.21 - $19.21
$19.21
$14.00 - $16.75
$14.00 - $16.75
$14.00
Save up to $5.21 Save $0.00
Hydro-Block 3/4" Pipe Seal - Waterproof Seal for Pipes
HYDRO-BLOK 3/4" Pipe Seal Save $2.88 Save $0.00

HYDRO-BLOK® 3/4" Pipe Seal

Hydro-Blok
$13.14
$13.14 - $13.14
$13.14
$10.26
$10.26 - $10.26
$10.26
14 in stock!

The HYDRO-BLOK 3/4" Pipe Seal is designed to provide a reliable and durable seal for 3/4" inlet and outlet pipes in tile shower and tub installatio...

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$13.14
$13.14 - $13.14
$13.14
$10.26
$10.26 - $10.26
$10.26
Save $2.88 Save $0.00
Hydro-Blok 4.5" Mixing Valve Seal - Waterproof Seal for Plumbing
Save $4.03 Save $0.00

HYDRO-BLOK® 4-1/2" Mixing Valve seal

Hydro-Blok
$18.39
$18.39 - $18.39
$18.39
$14.36
$14.36 - $14.36
$14.36
18 in stock!

The HYDRO-BLOK 4-1/2" Mixing Valve Seal is engineered to provide a secure, watertight seal for 4-1/2" mixing valve penetrations in tile shower and ...

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$18.39
$18.39 - $18.39
$18.39
$14.36
$14.36 - $14.36
$14.36
Save $4.03 Save $0.00
GoBoard Banding, 4-7/8" x 32'8", Side
GoBoard Banding, 4-7/8" x 32'8", Vertical
Save $10.35 Save $0.00

GoBoard® Crack Isolation & Joint Waterproofing Banding

Johns Manville
$47.80
$47.80 - $47.80
$47.80
$37.45
$37.45 - $37.45
$37.45
16 in stock!

GoBoard® Banding is a flexible, lightweight waterproofing and crack isolation membrane designed specifically for contractors and tile installers. M...

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$47.80
$47.80 - $47.80
$47.80
$37.45
$37.45 - $37.45
$37.45
Save $10.35 Save $0.00
Save $1.71 Save $0.00

wedi Subliner Dry Pipe Seal, 1/2" - 3/4"

Wedi
$15.00
$15.00 - $15.00
$15.00
$13.29
$13.29 - $13.29
$13.29
11 in stock!

The wedi Subliner Dry Pipe Seal is designed to provide a secure seal around 1/2" to 3/4" shower pipe extrusions. Made with a polyethylene core and ...

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$15.00
$15.00 - $15.00
$15.00
$13.29
$13.29 - $13.29
$13.29
Save $1.71 Save $0.00
GURU Water-Stop Waterproofing Band, 5-1/2" and 13-1/3" Side by Side
Save up to $18.34 Save $0.00

GURU W-S Band Waterproofing Reinforcement for Showers & Wet Areas

GURU USA
$58.30 - $133.16
$58.30 - $133.16
$58.30
$54.00 - $114.82
$54.00 - $114.82
$54.00
5 in stock!

GURU W-S Band Waterproofing Reinforcement is a trusted solution designed to securely complete waterproofing at critical floor-to-wall joints. Perfe...

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$58.30 - $133.16
$58.30 - $133.16
$58.30
$54.00 - $114.82
$54.00 - $114.82
$54.00
Save up to $18.34 Save $0.00
GoBoard 2-IN-1 Inside Outside Corners, 2-Pack, Back Side
GoBoard 2-IN-1 Inside Outside Corners, 2-Pack, Front Side
Save $2.82 Save $0.00

GoBoard® Waterproofing Corner (2-Pack)

Johns Manville
$21.64
$21.64 - $21.64
$21.64
$18.82
$18.82 - $18.82
$18.82
Only 2 left!

GoBoard® Corner is a pre-formed waterproofing accessory designed specifically to seal inside and outside corners in tile showers, steam rooms, and ...

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$21.64
$21.64 - $21.64
$21.64
$18.82
$18.82 - $18.82
$18.82
Save $2.82 Save $0.00
GoBoard Curb Cover, 2-Pack, Back Side
GoBoard Curb Cover, 2-Pack, Front Side
Save $4.04 Save $0.00

GoBoard® Curb Cover (2-Pack)

Johns Manville
$42.06
$42.06 - $42.06
$42.06
$38.02
$38.02 - $38.02
$38.02
23 in stock!

The GoBoard® Curb Cover provides a dependable waterproofing solution specifically designed for GoBoard curb installations. It effectively seals wal...

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$42.06
$42.06 - $42.06
$42.06
$38.02
$38.02 - $38.02
$38.02
Save $4.04 Save $0.00
Sold out

wedi Subliner Dry Waterproof Sealing Tape, 5"x32'8"

Wedi
$51.00
$51.00 - $51.00
$51.00
$40.17
$40.17 - $40.17
$40.17
Out of stock

wedi Subliner Dry Waterproof Sealing Tape is a versatile, high-performance solution for waterproofing structures, especially in showers and steam r...

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$51.00
$51.00 - $51.00
$51.00
$40.17
$40.17 - $40.17
$40.17
Sold out
Save $2.50 Save $0.00

Wedi Subliner Dry Mixing Valve Seal

Wedi
$16.75
$16.75 - $16.75
$16.75
$14.25
$14.25 - $14.25
$14.25
29 in stock!

The wedi Subliner Dry Mixing Valve Seal is designed to create a reliable seal around your mixing valve. It features a flexible collar that ensures ...

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$16.75
$16.75 - $16.75
$16.75
$14.25
$14.25 - $14.25
$14.25
Save $2.50 Save $0.00
Save $3.06 Save $0.00

Wedi Waterproofing Corners, 2-Pack

Wedi
$18.00
$18.00 - $18.00
$18.00
$14.94
$14.94 - $14.94
$14.94
19 in stock!

The wedi Subliner Dry Inside & Outside Corners are essential components for waterproofing corners in shower and steam room construction. Design...

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$18.00
$18.00 - $18.00
$18.00
$14.94
$14.94 - $14.94
$14.94
Save $3.06 Save $0.00
Guru Water-Stop 3/4" Pipe Seal
GURU 3/4” Water-Stop Pipe Seal
Save $1.66 Save $0.00

GURU ¾” Water-Stop Pipe Seal

GURU USA
$9.55
$9.55 - $9.55
$9.55
$7.89
$7.89 - $7.89
$7.89
Only 2 left!

The GURU USA ¾” W-S Pipe Seal is a professional-grade waterproofing accessory designed to create a reliable, watertight seal around ¾-inch shower p...

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$9.55
$9.55 - $9.55
$9.55
$7.89
$7.89 - $7.89
$7.89
Save $1.66 Save $0.00
Guru Water-Stop 4-1/2" Mixing Valve Seal Render
Save $0.77 Save $0.00

GURU W-S Mixing Valve Seal

GURU USA
$10.90
$10.90 - $10.90
$10.90
$10.13
$10.13 - $10.13
$10.13
16 in stock!

The GURU W-S Mixing Valve Seal provides contractors and tile installers with a durable, watertight solution to prevent leaks around shower mixing v...

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$10.90
$10.90 - $10.90
$10.90
$10.13
$10.13 - $10.13
$10.13
Save $0.77 Save $0.00
Sold out

wedi Tub Sealing Tape with Waterproof Butyl Connection Strip, 4.75" x 11'

Wedi
$60.00
$60.00 - $60.00
$60.00
$48.14
$48.14 - $48.14
$48.14
Out of stock

The wedi® Subliner Dry Tub Tape is a high-performance sealing solution designed for waterproofing the perimeter of tubs. With its butyl-based adhes...

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$60.00
$60.00 - $60.00
$60.00
$48.14
$48.14 - $48.14
$48.14
Sold out
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