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Schluter Systems Kerdi-Kereck-F 4.0-in x 7.75-in Preformed corner

Name: Schluter Systems Kerdi-Kereck-F 4.0-in x 7.75-in Preformed corner
Brand: Schluter Systems
SKU: 4741211
Price: 19.98 USD
Availability: InStock
Rating: 4.7 (74 reviews)

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4.7

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Fri, Oct 9

306 available

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323 available

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Kerdi-Kereck-F are preformed, seamless waterproofing corners made of Kerdi. They are designed to waterproof inside and outside corners of Kerdi , Kerdi-Board, and Ditra assemblies to prevent leaks. The 4 mil thickness helps minimize build-up in the corners.

Package contains 2 inside corners
Preformed, seamless corners made of Kerdi
Thickness is 4 mil
Ensures a fully water-tight seal at inside corners
For use with Kerdi, Kerdi-Board and Ditra installations
Convenient and easy to install

General
Color/Finish Family	Orange	Unit of Measure Quantity	0
Type	Preformed corner	Manufacturer Color/Finish	Orange
Material	Polyethylene	Unit of Measure	Linear feet
Package Quantity	2	Series Name	Kerdi-Kereck-F

Dimensions
Length (Inches)	4	Width (Inches)	7.75
Thickness (Inches)	0.004	Square Footage Per Roll (Sq. Feet)	0

Features
Waterproofing	Yes	Commercial/Residential	Commercial/Residential
Mildew Resistant	No	Uncoupling	No
Mold Resistant	No

Certifications
CA Residents: Prop 65 Warning(s)	No

Warranty
Warranty	10-year limited

Compatibility
For Use with RVs	No	For Use with Skirting	No
For Use with Mosaic Tile	Yes	For Use with Standard Tile	Yes
For Use with Field Tile	Yes	For Use with Large Format Tile	Yes

Miscellaneous
UNSPSC	30161700

Check out the Best Selling Tile Membranes on Lowes.com

Review

4.7 out of 5

74 Reviews

92% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise this waterproofing system for reliable corner sealing and exceptional ease of installation. Most highlight how it eliminates manual cutting and bending, delivering a professional, leak-free finish that prevents costly future repairs. Reviewers consistently describe installation as simple and faster than traditional methods, with pre-formed corners fitting perfectly. While some note the premium price, customers justify the cost as worthwhile investment for peace of mind and durability. A few mention it lacks self-adhesive backing or struggles with sloped corners, but these concerns are rare and do not diminish overall satisfaction.

Customer review summary generated by AI, including incentivized reviews.

74 Customer Reviews

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Amazing install instructions

Would Recommend

Easy to install just make sure to follow instructions. They have a YouTube chanel that explains every part of the Kerdi system.

ACOOKOctober 2, 2026
Verified Purchaser

Was this Review Helpful ?

It works. It helped with an emergecy repair in tim

Would Recommend

No wow factor Worked as expected. It helped with an emergency repair

TCANJune 28, 2026
Verified Purchaser

Was this Review Helpful ?

Really easy to use it

Gunmaker52June 3, 2026
Verified Purchaser

Was this Review Helpful ?

Do not cheap out and not buy these.

Would Recommend

Easy to use and install. Much easier than trying to cut and bend the Kerdi Band into these multiple shapes. Worth the little extra to know the corner is sealed properly.

AmateurShowerInstallerMay 27, 2026
Verified Purchaser

Was this Review Helpful ?

Complete the Schlutter System with Lowe's!

Would Recommend

We wanted complete Schlutter systems installed in all three bathrooms of our forever home. Lowe's was the only place in our area that carried all components in stock! So so super helpful.

Angela23rdsMay 26, 2026
Verified Purchaser

Was this Review Helpful ?

Only works in theory, not practical.

Would Not Recommend

Doesnt work well in corners with slope.

RichboyApril 26, 2026
Verified Purchaser

Was this Review Helpful ?

Works great

Would Recommend

These Kerdi corners are easy to work with and make the kerdi process much easier

NateApril 21, 2026
Verified Purchaser

Was this Review Helpful ?

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COMPARE PRODUCTS

		Name	Current Item Schluter SystemsKerdi-Kereck-F 4.0-in x 7.75-in Preformed corner
		Ratings	74
		Waterproofing
		Uncoupling
		Material	Polyethylene
Schluter SystemsKerdi-Kereck 4.0-in x 7.75-in Preformed corner	Schluter SystemsKerdi-Band 396.0-in x 5.0-in Waterproofing strip	Johns ManvilleGoBoard 3600-in x 3-in Reinforcing fabric	MusselBoundDouble-Sided Adhesive 180-in x 12-in Setting mat	Schluter SystemsKerdi-Kers-B 7.0-in x 3.0-in Preformed corner	Schluter SystemsKerdi-Kers 8.0-in x 8.0-in Preformed corner	Schluter SystemsDitra-PS 29-Inches x 38.75-Inches Uncoupling and Waterproofing membrane	Schluter SystemsKerdi-Kers 8.0-in x 8.0-in Preformed corner	Schluter SystemsKerdi-Flex 197-in x 5-in Waterproofing strip
40	242	72	324	3		17		3


Polyethylene	Polyethylene	Polyester	Plastic	Polyethylene	Polyethylene	Polyethylene	Polyethylene	Polyethylene

FEATURED PRODUCTS

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