Both Butyl tape vs. putty tape can be used for sealing and bonding. Butyl tape vs. putty tape also have some differences. Let’s check the difference to help us find suitable tapes.
What is Butyl tape?
Waterproof butyl tape, made from butyl rubber, polyisobutene, and other raw materials, is an environmentally solvent-free and self-adhesive sealing material. It is widely used in roofing of buildings, surface cracks, RV repair windows, boat sealing, glass, and EPDM rubber roof patching.

Features of butyl sealant tape
Excellent mechanical properties: High bonding strength and tensile strength, good elasticity and elongation properties, and ability to adapt to interface deformation and cracking.
Reliable application performance: good adhesion, waterproofness, sealing, low-temperature resistance, followability, and good dimensional stability. The construction operation process is simple.
It does not react actively to temperature and UV rays, so it performs better under high temperatures and exposure to the sun.
No matter what the weather is, butyl tape can maintain toughness and stickiness and has better air tightness.
What is the putty tape?
There are various types of putty tape, one of which is butyl putty tape, similar to butyl tape. But the composition is a sealant composed of putty, butyl, etc. It sticks easily into any crack, creating a waterproof seal.

Features of putty tape
- It can be used between roof ventilation windows, air conditioners, and other components that need to be bonded.
- It dries quickly, and because it contains petroleum components and products that can corrode and damage EPDM rubber membrane roofs, putty tape is not recommended for use on EPDM rubber.
- Putty tape is cheaper than butyl tape.
Application
Butyl tape VS. putty tape also has some differences in applications.
Butyl tape is suitable for sealing various civil roofs, color steel, steel structures, waterproof membranes, PC boards, etc. under sunlight.
Putty tape is suitable for roof ventilation windows, air conditioners, and other parts that need to be bonded.
Butyl Tape VS. Putty Tape
The differences between butyl tape and putty tape are adhesion, flexibility, price, durability, and applications. Butyl tape will have better adhesion, flexibility, and durability. And the putty tape is cheaper than putty tape. Applications are also different. If it is an EPDM rubber roof, avoid using putty tape as it may corrode and damage the roofing material. Although butyl tape is more expensive, its properties such as softness, weather resistance, etc. are more beneficial in actual use and the effect is more durable.
Butyl tape vs. putty tape have their characteristics, and the selection should be based on specific application requirements, material properties, and environmental conditions.