Getting a reliable seal around RV joints and openings is a lot easier with tape that conforms where standard sealants struggle. This butyl tape installs quickly, helps prevent gaps and skips, and works well around seams, frames, and irregular shapes. Great Prices for the best rv roof repair from Dicor. Dicor Butyl Tape - Gray - 30' Long - Qty 1 Roll part number DC38SR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Dicor RV Roof Repair
- DC38SR
Tape
Gray
Butyl Tape
30 Feet Long
Dicor
Getting a reliable seal around RV joints and openings is a lot easier with tape that conforms where standard sealants struggle. This butyl tape installs quickly, helps prevent gaps and skips, and works well around seams, frames, and irregular shapes.
Highlights
Sealed Roof Openings: Butyl tape seals seams, joints, openings, and rooftop components against gaps.
Continuous Seam Coverage: Continuous rolls cut down on skips during long edge and frame sealing jobs.
Shape-Conforming Placement: Flexible material conforms around unusual shapes and patterns during installation.
Quick Cut-and-Peel Application: Cut-to-length tape and a peel-away release liner keep setup direct on dry surfaces.
Wet-Exposure Adhesion: Sealant formula maintains adhesion after prolonged water exposure on galvanized metal.
Metal-Safe Contact: Corrosivity-safe formula resists staining, etching, and corrosion on galvanized and coated metals.
Specs
Quantity and Dimensions:
Quantity: 1 roll
Dimensions: 1/8" x 3/4" x 30'
Shelf Life:
18 months - 2 years
Temperature:
Application: 30 - 110 degrees F
Operating limits: -20 - 275 degrees F
Storage: 30 - 110 degrees F
Physical Properties:
Tensile strength: 25 psi (ASTM D987-72)
Color: gray
Specifications:
Military MIL-C-18969B, Type II, Class B Federal TT-C789A, Type II, Class B
BT-1834-1 Dicor Butyl Seal Tape - Grey - Qty 1 Roll
Getting a reliable seal around RV joints and openings is a lot easier with tape that conforms where standard sealants struggle. This butyl tape installs quickly, helps prevent gaps and skips, and works well around seams, frames, and irregular shapes.
by: James07/17/2026
3586678
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See what our Experts say about this Dicor RV Roof Repair
Hey Chris! Yes, Dicor Self-Leveling Lap Sealant # DC94SR is a great choice for installation of the Overlander Expansion Kit # 34282182. You will also want to pick up some butyl tape # DC38SR.
The butyl tape will go under the mounting brackets, and you'll apply the Dicor over the screws and around each mounting point. This will create a flexible, weatherproof seal that helps keep water out. I actually installed this same kit on my own trailer, which you can see below.
However, if your... view full answer...
Hey Jeff! The best option for a self-leveling sealant is definitely Dicor. This is probably the number one name in that space, and is compatible with EPDM, TPO, PVC, DiFlex II, and BriTEK roofing materials. There are a variety of colors available, you can choose from the following:
-Dicor Self-Leveling Lap Sealant - 10.3oz - White # DC94SR
-Dicor Self-Leveling Lap Sealant - 10.3oz - Ivory # DC34SR
-Dicor Self-Leveling Lap Sealant - 10.3oz - Tan # DC54SR
-Dicor Self-Leveling Lap Sealant... view full answer...
Hey Ryan! Absolutely. Dicor Self-Leveling Lap Sealant # DC94SR is designed for sealing around roof-mounted accessories like the Winegard Air 360+ # WG66BJ. Once everything is mounted, apply the Dicor over the mounting screws and around the base to create a flexible waterproof seal. Butyl tape # DC38SR is also recommended for installation. See the attached photo.
What kind of RV/trailer are you installing this on? view full answer...
Hey Kevin! I'd definitely use both. Butyl tape like # DC38SR creates the primary seal between the roof and the vent. Dicor Self-Leveling Lap Sealant # DC94SR provides the weatherproof secondary seal over the screws and flange. This is pretty standard practice for the industry, and what works best to prevent any unwanted leaks.
Which roof vent are you replacing? view full answer...
Hi Ashley, yes! Dicor Self-Leveling Lap Sealant # DC94SR is a great choice for sealing around a replacement RV skylight. Install the skylight over butyl tape # DC38SR first, then apply the Dicor over the screw heads and around the outside flange to help keep water out. Skylights take a lot of direct sunlight, so I also recommend checking the sealant during your annual roof inspection.
Which skylight are you replacing? view full answer...
Hey Brian! Absolutely. After installing the MaxxFan Deluxe Roof Vent # MA00-07500K over butyl tape # DC38SR, use the Dicor Self-Leveling Lap Sealant # DC94SR over the mounting screws and around the flange to help create a long-lasting waterproof seal.
I'd also give the roof a quick inspection while you're up there since it's a great opportunity to catch any aging sealant elsewhere.
What RV are you installing it on? view full answer...
Hey Mike! Yes, Dicor Self-Leveling Lap Sealant # DC94SR is exactly what I recommend for roof vent installation. Whenever you're working on a roof, self-leveling sealant is almost always what you want to use. Install the # V2092SP-28 over butyl tape like # DC38SR first, then apply the Dicor over the mounting screws and around the flange to create a weatherproof secondary seal.
Which roof vent are you replacing? view full answer...
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