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Dicor
Dicor 501LSD-1 HAPS-Free Self-Leveling Lap Sealant

Dicor 501LSD-1 HAPS-Free Self-Leveling Lap Sealant

Best price now

$29.90at PatchroChecked Nov 9

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Price facts

  • Last seen at $29.90 at Patchro on Nov 9.

Our take on the Dicor 501LSD-1 HAPS-Free Self-Leveling Lap Sealant

Dicor 501LSD-1 is a self-leveling lap sealant for RV roofs, sold in 10.3 fl. oz. tubes. It flows out on horizontal surfaces to seal seams, vents and edges without tooling, and it is formulated without HAPS solvents. It bonds to EPDM, TPO and PVC membranes and also to aluminum, fiberglass, wood, vinyl, galvanized metal, mortar and concrete. The dove white color is sun-stabilized so it resists discoloration and won't stain the roofing material. It suits owners resealing a flat RV roof; on vertical surfaces a non-sag sealant is the better choice.

Best forRV owners resealing roof seams and vent flangesHorizontal roof surfaces where a pourable sealant is wantedEPDM, TPO and PVC membrane roofsMulti-tube jobs on a full roof reseal
Pros
  • Self-leveling, so it spreads smooth on horizontal roof surfaces
  • HAPS-free formula
  • Bonds to EPDM, TPO and PVC membranes plus metal, wood and fiberglass
  • Sun-stabilized white that resists discoloration and staining
  • Works on many substrates beyond RV roofs
Cons
  • Only self-leveling: it runs on vertical or sloped surfaces
  • Silicone-based, so it is not paintable
  • Cures slowly and skins over before full set
  • Tubes are single-use once opened

Dicor 501LSD-1 HAPS-Free Self-Leveling Lap Sealant prices at every store

  • PatchroNew

    In stockReturn policy

    $29.90Checked Nov 9
    Visit Patchro

What reviewers say

Owners of RVs and trailers use it to reseal roof seams, vents and skylights and generally report it flows out flat and holds. Complaints center on vertical surfaces, where it sags, and on the slow cure.

What people mention
  • LevelingPraisedOwners say it flows out flat and smooth on horizontal roof surfaces with little tooling.
  • AdhesionPraisedReviewers report it grips EPDM and TPO membranes and metal fittings well.
  • Vertical useCriticisedUsers report it runs and sags on sloped or vertical surfaces, where a non-sag sealant is needed.
  • Cure timeMixedSome owners say it skins over quickly but takes a long time to cure fully.
  • PaintabilityCriticisedBuyers note the silicone-based sealant cannot be painted over.

About the Dicor 501LSD-1 HAPS-Free Self-Leveling Lap Sealant

Dicor 501LSD-1 is a HAPS-free, self-leveling lap sealant for RV roofs. It is sun-ray stabilized, so it resists spoiling and discoloration. It does not stain or discolor the roofing material it is applied to.

The self-leveling formula goes on smoothly on horizontal surfaces. It works with EPDM, TPO and PVC membranes. It also adheres firmly to aluminum, mortar, wood, vinyl, galvanized metal, fiberglass and concrete.

The sealant is a dove bright white. It comes in 10.3 fl. oz. tubes, in a pack of 25.

Brand
Dicor
Material
Silicone
Style
Self-leveling
Color
Dove bright white
Tube size
10.3 fl. oz.
Pack size
25 tubes
Item weight
9.6 ounces
Dimensions
2 x 0.6 x 11 inches (L x W x H)
Membranes
EPDM, TPO, PVC
Adheres to
Aluminum, mortar, wood, vinyl, galvanized metal, fiberglass, concrete
Application
Horizontal surfaces on RV roofing

Questions and answers

What is Dicor 501LSD-1 used for?
It seals seams, vent flanges, skylights and edges on RV roofs. It is made for horizontal surfaces, where it levels itself into a smooth bead.
Does it work on TPO and PVC roofs?
Yes. Dicor lists EPDM, TPO and PVC membranes as compatible, and it also bonds to aluminum, fiberglass, wood, vinyl, galvanized metal, mortar and concrete.
Can I use it on a vertical surface?
No. It is self-leveling and will run on vertical or steeply sloped surfaces. Use a non-sag lap sealant there instead.
Can it be painted?
No. It is silicone-based, so paint will not adhere to it.
How much sealant does one tube cover?
Coverage depends on bead width and seam length. A 10.3 fl. oz. tube lays a modest bead, so measure your seams before buying.
What does HAPS-free mean here?
The formula avoids hazardous air pollutant solvents, which matters for odor and indoor air while working.
Where is the Dicor 501LSD-1 HAPS-Free Self-Leveling Lap Sealant cheapest?
At Patchro, for $29.90, as of our latest check.

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