Name: Schluter Systems Primer-U 1 Gallon(s) Liquid Indoor Primer
Brand: Schluter Systems
SKU: 5015099211
Price: 71.59 USD
Availability: InStock
Rating: 5 (1 reviews)

Here are some similar items...

SikaPrimer 1 Gallon(s) Liquid Indoor Primer

Schluter SystemsPrimer-PS 1 Gallon(s) Liquid Indoor Primer

MAPEIPlanipatch Plus 1 Gallon(s) Liquid Indoor Additive

MAPEIEcoPrim Grip 1 Gallon(s) Liquid Indoor Primer

127

Schluter SystemsPrimer-U 1 Quart(s) Liquid Indoor Primer

MAPEIPrimer T 1 Quart(s) Liquid Indoor Primer

262

MAPEIMapelastic Aquadefense 1 Gallon(s) Liquid Indoor Waterproof Membrane

494

Henry1 Gallon(s) Liquid Indoor Primer

MAPEISM Primer 1 Gallon(s) Liquid Indoor Primer

Henry1 Gallon(s) Premixed Indoor Waterproof Floor patch and leveler

261

Henry44 Pound(s) Indoor Waterproof Self-leveling underlayment

Henry7 Pound(s) Powder Indoor Floor patch

MAPEISelf Leveler Plus 50 Pound(s) Powder Indoor Self-leveling underlayment

748

MAPEI4-to-1 Mud Bed Mix 55 Pound(s) Powder Indoor Floor patch

285

MAPEIMapelastic Aquadefense 3.5 Gallon(s) Liquid Indoor Waterproof Membrane

494

Best Price. Guaranteed

Find a lower price on an exact item? We'll match it. Some exclusions apply.

Price Guarantee

FREE Returns

Return it in store or ship it back for free. Eligibility rules apply.

Return Policy

Pay Your Way

Credit card, PayPal or Buy Now, Pay Later options available at checkout. Your choice.

Payment Options

Primer-U is a ready-to-use, solvent-free, 100% acrylic, water based primer. It is used to enhance adhesion when applying Schluter thin-set mortars or Ditra-Heat-PS and Ditra-Heat-Duo-PS peel and stick membranes to difficult-to-bond-to surfaces. Application is simple with a roller or brush and dries in 15-60 minutes. Primer-U is ideal for interior substrates such as gypsum underlayment, concrete, existing tile, flooring adhesive residue, plywood and OSB.

One-component, solvent-free, water-based acrylic universal primer
Ideal for use with Schluter thin-set mortars, Ditra-Heat-PS and Ditra-Heat-Duo-PS
Ready-to-use, single-coat application with roller or broom
Easy soap and water clean up
Freeze/thaw stable
15-60 minute dry time
Coverage 250-550 sq ft

General
Product Type	Liquid	Unit of Measure	Gallon(s)
Series Name	Primer-U	Drying Time (Hours)	1
Package Quantity	4	Required Additional Components	None required
Use Location	Indoor	Surface Prep Type	Primer
Unit of Measure Quantity	1

Dimensions
Container Size	1-gallon	Coverage Area (Sq. Feet)	250

Features
Freeze Resistant Post Installation	Yes	Waterproof	No
Lowe's Exclusive	No	Sold As	Bucket
Primer Required	No

Certifications
CA Residents: Prop 65 Warning(s)	Prop 65 WARNING(S) -

Warranty
Warranty	1-year limited

Compatibility
For Use with Vinyl	No	Use Over Cement Backer Board	No
For Use with Hardwood	No	Use Over Concrete	Yes
For Use with Laminate	No	Use Over Existing Sheet Vinyl	Yes
For Use with Tile	Yes	Use Over Exterior Grade Plywood	Yes
For Use on Laminate	No	For Use with Carpet	No
For Use Over Tile	Yes	For Use Over Painted Floor	No
For Use Over Vinyl	Yes

Miscellaneous
UNSPSC	31211500

Check out the Best Selling Surface Preparation on Lowes.com

Review

5 out of 5

1 Review

4 Star

3 Star

2 Star

1 Star

0% Recommend this product

Ratings may include incentivized customer reviews.

1 Customer Reviews

Sort By

Worked great

jacuOctober 12, 2025
From Primer-U 1 Quart(s) Liquid Primer Verified Purchaser

Was this Review Helpful ?

Schluter Systems: Featured Videos

COMPARE PRODUCTS

		Name	Current Item Schluter SystemsPrimer-U 1 Gallon(s) Liquid Indoor Primer
		Ratings	1
		Use Location	Indoor
		Use Over Concrete
		Use Over Exterior Grade Plywood
MAPEIMapelastic Aquadefense 3.5 Gallon(s) Liquid Indoor Waterproof Membrane	MAPEIMapelastic Aquadefense 5 Gallon(s) Liquid Indoor Waterproof Membrane	AMESBlue Max Tile and Floor 3.5 Gallon(s) Liquid Indoor Waterproof Membrane	Henry44 Pound(s) Indoor Waterproof Self-leveling underlayment	MAPEIPrimer L 5 Gallon(s) Liquid Indoor Primer
494	494	28	8
Indoor or outdoor	Indoor or outdoor	Indoor	Indoor	Indoor