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Dicor
Dicor 501LST Self-Leveling Lap Sealant

Dicor 501LST Self-Leveling Lap Sealant

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$118.98at PipeCoreChecked Nov 9

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Price facts

  • Last seen at $118.98 at PipeCore on Nov 9.
  • Our take on the Dicor 501LST Self-Leveling Lap Sealant

    Dicor 501LST is a self-leveling lap sealant for RV roofs, sold in 10.3 oz tubes. It flows out flat on horizontal surfaces, so seams, vent flanges and skylight edges get a smooth bead without tooling. It bonds to EPDM, TPO and rubber roofing and stays flexible through sun, rain and temperature swings. RV owners treat Dicor as the standard roof caulk; the trade-off is that it only works on level surfaces and cures slowly in cold weather.

    Best forRV owners resealing roof seams and vent flangesEPDM, TPO and rubber roof maintenanceHorizontal roof repairs done in warm, dry weatherDIYers who want a smooth finish without tooling
    Pros
    • Self-leveling formula spreads into a flat, even bead
    • Bonds to EPDM, TPO and rubber roofing
    • Stays flexible with roof movement instead of cracking
    • UV and weather resistant for outdoor roof use
    • Works around skylights, vents, seams and roof edges
    Cons
    • Only suitable for horizontal surfaces; it runs on slopes
    • Slow cure in cold weather
    • Skin forms quickly, so excess needs wiping promptly
    • Not a substitute for repairing a damaged roof membrane

    Dicor 501LST Self-Leveling Lap Sealant prices at every store

    • PipeCoreNew

      In stockReturn policy

      $118.98Checked Nov 9
      Visit PipeCore

    What reviewers say

    RV owners rate Dicor lap sealant as the go-to for roof seams and fittings. They like that it flows out flat and holds up to sun and rain. Complaints center on cold-weather curing and messy application.

    What people mention
    • Self-leveling flowPraisedOwners say it spreads into a flat, even bead on horizontal seams without tooling.
    • AdhesionPraisedReviewers report it bonds well to EPDM and TPO roof membranes.
    • Weather durabilityPraisedOwners say sealed seams hold up through sun, rain and heat.
    • Cure timeCriticisedReviewers note it cures slowly in cool weather.
    • Application messMixedSome find it messy and stringy to apply, and it runs on sloped surfaces.

    About the Dicor 501LST Self-Leveling Lap Sealant

    The Dicor 501LST Self-Leveling Lap Sealant is a tan RV roof caulk for repairing leaks and sealing roofs. It comes as a 6 pack of 10.3 oz tubes, 61.8 oz in total. It is made for horizontal application on EPDM, TPO and rubber RV roofs.

    The self-leveling formula flows evenly over horizontal surfaces and leaves a smooth finish without extra tools. It forms a waterproof barrier that helps prevent leaks and water intrusion. It bonds to roofing around skylights, vents, seams and roof edges.

    The sealant resists UV, sunlight, rain and temperature extremes. The seal stays flexible to allow for roof movement and expansion without cracking or peeling.

    Color
    Tan
    Item form
    Paste
    Water resistance
    Waterproof
    Pack size
    6 tubes
    Tube size
    10.3 oz each
    Total volume
    61.8 oz
    Application
    Horizontal surfaces
    Compatible roofs
    EPDM, TPO and rubber RV roofs

    Questions and answers

    What is Dicor 501LST used for?
    It seals lap seams and roof fittings on RV roofs, including around skylights, vents and edges. It is a self-leveling sealant for horizontal surfaces.
    Which roof materials does it bond to?
    It is made for EPDM, TPO and rubber RV roofing. Check your membrane type before use.
    Can I use it on a vertical or sloped surface?
    No. It flows and levels, so it runs on slopes. Use a non-leveling lap sealant for vertical seams.
    How long does it take to cure?
    It skins over fairly quickly but cures slowly, especially in cool weather. Plan roof work for warm, dry days and keep traffic off the seam until fully set.
    Does it need a primer?
    Dicor does not require a primer on clean EPDM, TPO or rubber. Clean and dry the surface and remove old loose sealant first.
    How much coverage do the tubes give?
    Coverage depends on bead size. A 10.3 oz tube lays a typical bead along several feet of seam, so estimate your total seam length before starting.
    Where is the Dicor 501LST Self-Leveling Lap Sealant cheapest?
    At PipeCore, for $118.98, as of our latest check.

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