Can I use it on a vertical RV wall or seam?

No. It is self-leveling and will run on slopes and vertical surfaces. Use a non-sag lap sealant for those areas.

Which roof materials does it work on?

It is made for EPDM, TPO and PVC roofing membranes. It also adheres to aluminum, wood, fiberglass, galvanized metal, mortar and concrete.

How much area does one tube cover?

Coverage depends on bead width. A 10.3 oz tube handles typical seam and vent touch-ups but will not cover a full large roof.

How long before rain can hit it?

Let it skin over and cure before exposure to rain. Cure time stretches in cool or damp weather, so plan around a dry forecast.

Does it stain the roof?

No. It is UV stabilized and formulated not to stain or discolor the roofing material it is applied to.

Do I need to clean the roof first?

Yes. Sealant bonds best to a clean, dry, oil-free surface, so scrub off dirt and old loose sealant before applying.

Where is the Dicor 501LSG-1 Self Leveling Lap Sealant cheapest?

At FixTimber, for $16.60, as of our latest check.

What do buyers say about the Dicor 501LSG-1 Self Leveling Lap Sealant?

Rated 4.7 out of 5 from 17 ratings. Buyers like: Shoppers found practical repair supplies easy to find and clearly presented; Products worked well for filling damaged areas and small maintenance projects; Convenient categories made it simple to compare options.

Where can I buy the Dicor 501LSG-1 Self Leveling Lap Sealant?

7 stores we checked sell it, including FixTimber, Patchro, Walmart, TWIST, The Twister Group.

Dicor 501LSG-1 Self Leveling Lap Sealant Price History: Lowest $16.60

What reviewers say

4.7 / 517 ratings

Owners rate it highly and describe it as the go-to lap sealant for RV roof repairs. They report it flows out smoothly, levels flat and holds up in sun and weather. Complaints center on it running on slopes and on tubes emptying faster than expected.

What people mention

LevelingPraisedOwners say it flows out and flattens into a smooth bead without tooling.
AdhesionPraisedReviewers report it bonds firmly to EPDM and TPO membranes and to metal fittings.
Weather resistancePraisedUsers say sealed seams hold up through sun and rain without cracking.
Vertical useCriticisedBuyers report it sags and runs on sloped or vertical surfaces.
CoverageMixedSome owners find a single tube covers less roof area than they expected.

From FixTimber

Grey self-leveling lap sealant for horizontal RV roof surfaces
Self-leveling formula for smooth application
Works with EPDM, TPO and PVC membranes
Adheres firmly to aluminum, mortar, wood, vinyl, galvanized metal, fiberglass and concrete
HAPS-free formula
Ideal for RV roofing, maintenance, repair and appliance application

Sizes: Self-Leveling
Materials: Silicone
Packs: Pack of 25 tubes offered
In the box: 10.3 fl. oz. tube of sealant

About the Dicor 501LSG-1 Self Leveling Lap Sealant

The third part of Dicor’s three-part roofing system, EPDM Lap Sealant creates a secure, secondary seal along the roof’s edges, air vents, vent pipes and screw heads. Compatible with EPDM and TPO sheeting, it adheres firmly to aluminum, mortar, wood, vinyl, galvanized metal, fiberglass and concrete. Ideally suited for aftermarket use, the lap sealant is one of the highest volume products sold in RV stores today. Color matched, the EPDM lap sealant is UV stabilized to prevent deterioration and discoloration. Plus, it will not stain or discolor any roofing material to which it is applied. Self-leveling lap sealant is designed for use on horizontal surfaces.