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What is a Butyl Seal Tape? Here's Everything You Need to Know! - XFasten

What is a Butyl Seal Tape? Here's Everything You Need to Know!

If you are looking for a reliable, heavy-duty adhesive that does quick repairs in a jiffy, nothing beats the flexibility and strength of butyl tape. It does an excellent job providing a mess-free and air-tight sealing for RVs, windows, boats, glass, and even as an EDPM Rubber Roof Patching. 



  • Household: Given the waterproof and advanced adhesive properties of butyl tape, it’s ideal to be applied to areas wherein leakage and corrosion from humidity are common such as underground pipes and joints. It can also be used in ventilation systems, water pipes insulation, roofing repairs, dust removal equipment, and a lot more. If you own a car, it’s also a good idea to bring a roll of butyl tape with you. Leaks in your car engine can happen anytime, and just a strip or two of butyl tape can seal it in a matter of minutes. 

  • RVs: If you are the type person who is fond of DYI-ing everything in your RV, butyl tape is your best friend. While a normal putty tape is relatively more affordable as compared to butyl tape, spending a few more bucks with the latter is an investment already since this tape is much more pliable, easier to work with, and it doesn’t dry and oozes out messily as compared to regular putty tapes. 

  • Window Sealing: Some people prefer to use butyl tape to seal their windows and doors as compared to sealants. Why, you might ask? The answer is simple: butyl tapes are easier to manage and work with. It is also conformable, which makes it easy to install on windows and frames with irregular curvatures. 

  • Vehicles: Vehicle owners will understand that unexpected leaks can happen - and sometimes, it happens at the wrong time! Having a roll of butyl tape with you can actually provide you peace of mind while driving as it has the ability to do quick emergency repairs. With a butyl tape, you can use it to fill gaps on a car firewall and as a gasket between vibrating panels. 


    Butyl Tapes, undeniably, can be considered as an all-in-one solution due to its many application uses. In addition, it is also compatible with these surfaces: 


    • Rubber roofing
    • Glass
    • Wood
    • Plastic
    • Aluminum
    • Galvanized Metal




    Like any other adhesives, ensuring proper installation process is highly essential if you want to fully utilize the strength of butyl tape. Here’s a detailed step-by-step installation process: 


    • Before installing the butyl tape, it would be best to chill it by storing it in the fridge for 2-3 hours. This will make it more manageable. This step is optional, but a butyl tape that has been cooled down will be easier to manage and conform.  


    • Make sure that the surface where you would be installing the Butyl Tape is clean, dry, and dust-free. Thoroughly dust the area, clean it with an alcohol solution (if applicable) and let it completely dry before applying the tape.  


    • Peel the tape from the roll. The tape itself is easy to tear so you shouldn't have any problem. An important note to make, though: make sure to not touch the adhesive side too much as oils from your hands or any other foreign materials can contaminate the adhesive and lessen its bonding strength.


    • Conform the tape with the surface’ texture to eliminate any gaps that may exist between the tape and the surface. The tape is conformable so make sure that you mold and press it against the surface's bumps, curves, and empty areas, covering every possible hole.  


    • Roll many layers of the tape to make the butyl patch thicker. This set-up would significantly increase the strength, stability, and air and watertight properties of the application. Eliminate any air bubbles which may exist by applying pressure on the area of application.  


    • You can trim any adhesive that oozes out using a plastic knife or any plastic card.  


    • Wet your fingers with soapy water (just normal 50-50 mix of water and soap), and rub it on the tape's surface. This will smoothen the butyl rubber, reduce any bumps or lumps, and give your installation a smooth and professional look!
    • Allow the tape to cure, dry, and acclimatize overnight before exposing the surface to any harsh conditions. If this isn't possible, then letting the tape set for at least 3-4 hours would be sufficient.



    There are plenty of choices in the market, but nothing beats the XFasten Butyl Seal Tape. It’s available in three colors: white, black, and gray. As all our products go through stringent laboratory tests to ensure topnotch quality, our butyl tapes resist physical degradation even under elevated temperatures. It doesn’t turn messily into goo upon storage or transit. 




    Reasons Why You Should Choose the XFasten Butyl Seal Tape:


    • Built to last. Thanks to our high-temperature butyl tape tempering process, the XFasten RV Roofing Repair Patch Tape can provide airtight and watertight sealing that can withstand extreme weather conditions, UV, sunlight, heavy rainfall, and cold winter drafts.


    • Resists physical and chemical degradation. Thanks to its temperature resistant and anti-corrosion properties, you can easily store the XFasten Butyl Seal Repair Tape in a room with a cool temperature and expect it not to be reduced into a messy puddle of goo that can be hard to handle. It is recommended to store the roll in the fridge at least 6 hours before using for best results.


    • Professional Finish. After installation, you will be left with a seamless, neat and mess-free installation. It is certified to be watertight and leak-free against water, vapor, or corrosive chemicals.


    • Versatile Applications. It can be applied to rubber roofing, galvanized metal, frosted fiberglass, wood, textile, plastic, aluminum, and any other typical RV, home, automobile, and boat surfaces.


    Do you have any other unique uses of Butyl Tape that you can share with us? We’d love to hear it from you from the comments down below! 

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    GEORGE ORTIZ - July 28, 2021

    Good afternoon

    Can you help me with pricing on XFASTEN BUTYL SEAL TAPE in 6", 8"and 12" Wide.
    unit pricing and if I buy one box of each size

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    Danked_Cancer - March 12, 2021

    I’m using it to fix a broken bong

    Nicola James - February 20, 2021

    I’m using butyl tape to seal my shower tray. What joint sealant can I use with it? I have read elsewhere that you should be careful of exposing butyl to certain chemicals -but the article didn’t expand on that … so I’m left wondering if it’s ok to use a high modulus acetoxy sealant on butyl

    Richard Brackett - December 2, 2020

    I have a 25 foot by 2 inches wide by about 3/8ths thick rubber trim total weight 5 lbs ,that covers the SMC (polyester resin) and aluminum joint on my GMC motorhome. Some may call it door bumper trim. Over the past 40 plus years the adhesive that holds the trim on and seals the joint has failed. Will your butyl tape adhere to the rubber, SMC and aluminum joint, holding it in place and seal the joint.?
    Thank you

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