Removable Butyl Mastic SIKA SikaLastomer 831 E – Sealing for Motorhomes and Converted Vans
The perfect Sikalastomer seal for the van and motorhome roof
The removable butyl mastic SIKA SikaLastomer 831 E is the ideal solution to ensure a perfect seal on the roof of your motorhome, van, or converted van. This roll mastic is easy to use and particularly effective for installations requiring easy disassembly.
It is perfectly suitable for installing Skylight, air conditioners, roof vents, or any other screwed or riveted roof accessory requiring a perfect seal.
🔧A butyl mastic easy to apply and remove
- Available in rolls of 12 to 25 meters and thicknesses of 1.5 mm or 3 mm, the SikaLastomer 831 E mastic can be applied without special tools. A simple press between the two surfaces is enough to ensure a durable seal, thanks to the high elasticity of the butyl.
- This mastic does not stick permanently : it remains flexible but dry to the touch, allowing you to dismantle your equipment without damaging the surfaces. You just need to clean the residues with a knife and disposable paper to keep the surface clean and free of marks.
Compatibility with all materials
Formulated based on polyisobutylene (butyl), this mastic is compatible with a wide variety of materials: metal, plastic, aluminum, polyester, etc. It resists weather, vibrations, and temperature variations, making it a product perfectly suited for recreational vehicles.
Vibration reduction
The SikaLastomer 831 E not only ensures sealing: in thickness, it also acts as a vibration damper, thus extending the life of your installations and improving comfort on board your vehicle.
❓ What is a removable butyl mastic?
A removable butyl mastic is a flexible sealing joint that hardens little over time. It allows fixing elements without permanent bonding while ensuring a waterproof and airtight barrier.
❓ Can this mastic be used on a polyester or metal roof?
Yes, the SikaLastomer 831 E is compatible with polyester, aluminum, metal, and plastics. It is therefore suitable for all types of roofs of converted vehicles or boat decks.
❓ Is it resistant to UV and weather?
The SikaLastomer 831E is not designed to withstand prolonged UV exposure. For an aesthetic and waterproof finish, it is recommended to apply Sikaflex 552AT on the edges of the equipment.
❓ Is the mastic repositionable?
Yes. Since it does not stick permanently, you can dismantle and reposition your accessories without damaging or dirtying the surfaces. Prefer replacing the mastic for a reliable and 100% waterproof assembly.
❓ Is this mastic suitable for assembly without screws?
It is ideal for assemblies with screws, counter-frames, or rivets, but not for assemblies glued only. It ensures sealing but not mechanical fastening.
❓ Why choose Sika butyl mastic for your converted van?
The SIKA SikaLastomer 831 E mastic is recognized by motorhome professionals for its reliability, ease of application, and ability to last over time without hardening. It is perfect for all sealing work on the roof of your converted van, whether for a new installation or replacement.
Technical characteristics of SikaLastomer 831 E mastic
- Roll length: 12 m or 25 m
- Width: 12 / 20 / 25 mm
- Thickness: 1.5 mm or 3 mm
- Color: gray
- Type: removable butyl mastic
- Easy to apply, remove, and clean
