Sealing Tape 3M 4411W+ — acrylic adhesive on TPO carrier, 50 mm x 33 m, white

3M 4411W+ is a sealing tape with acrylic adhesive on a TPO carrier, supplied in white with a width of 50 mm and a roll length of 33 m. It is intended for sealing joints, overlaps and repairs on TPO membranes and similar exterior surfaces where a durable, weather-resistant bond is required. The tape arrives ready to apply and is suitable for detail work on roofs, flashings and other membrane connections.

Advantages

The combination of an acrylic adhesive and a thermoplastic polyolefin carrier provides stable adhesion across a range of temperatures and good resistance to UV exposure and moisture. The white colour helps reduce heat absorption on exposed surfaces and enables discreet repairs on light-coloured membranes. The tape is supplied on a convenient roll that simplifies measuring and application for small to medium-sized sealing tasks.

Suitable for

• Sealing overlaps and seams on TPO roofing membranes
• Detail repairs and patching of membrane surfaces
• Sealing flashings, penetrations and roof transitions
• Exterior sealing where weather and UV resistance is needed

When it may not be suitable

This tape is designed for use on TPO and similar membranes; it may not provide optimal adhesion on oily, highly textured or contaminated substrates without proper cleaning and preparation. It is not intended to replace full-system roof repairs where structural damage exists or where manufacturer instructions call for heat-welded seams.

Key specifications

• Adhesive type: acrylic
• Carrier material: TPO (thermoplastic polyolefin)
• Colour: white
• Width: 50 mm
• Length: 33 m
• Application: exterior sealing, roofing details, membrane repairs

How to use

Ensure surfaces are dry, clean and free of dust, oils and loose particles before applying the tape. Measure and cut the required length, peel back the release liner, position the tape accurately over the joint or repair area and press firmly along the full length to promote adhesive contact. Use a roller or firm hand pressure to remove air pockets and achieve consistent adhesion. For best results, apply at recommended temperature ranges and follow any additional instructions from the membrane manufacturer.

What to consider before purchase

• Confirm compatibility with the membrane or substrate to be sealed
• Assess required width and length for the intended repairs or details
• Check site temperature and surface condition for proper adhesion
• Determine whether a tape solution is sufficient or if heat-welding or full replacement is required

Usage recommendations

Use the tape for small to medium repair and detailing work on TPO and like membranes. Clean and dry the surface thoroughly, apply with steady pressure, and check adhesion after initial curing period. For extensive damage or structural issues, consult a roofing professional.