Description
x3M Primer 94 Adhesion Promoter for VHB Tape – 236ml
3M Primer 94 is a trusted adhesion promoter designed for use with VHB (Very High Bond) tapes on critical or low-energy surfaces. It prepares the substrate by cleaning, activating, and optimising the surface chemistry before tape application, delivering a stronger and more reliable bond on materials including metal, glass, plastic, wood, concrete, and painted surfaces.
Key Features
- Adhesion promoter for use with 3M VHB and other high-strength bonding tapes
- Suitable for metal, glass, PE, PP, ABS, PET/PBT blends, concrete, wood, and painted metal
- Removes contaminants and activates surface energy for improved tape contact
- Enhances chemical interaction between tape and substrate
- Essential for low-energy or challenging surfaces where tape alone may not achieve full bond strength
- Supplied in a 236ml tin
Product Overview
When bonding with VHB tapes, surface preparation is critical. Even on apparently clean metal or painted surfaces, residual oils, moisture, or surface oxidation can significantly reduce bond strength over time. Applying 3M Primer 94 before the tape ensures the surface is properly activated and contaminant-free, maximising the long-term adhesion performance of the tape.
Before applying the primer, clean contaminated surfaces with a 50/50 mixture of isopropyl alcohol and water using a clean, lint-free cloth. Allow the surface to dry completely before applying the primer and allow the primer to dry before applying the tape.
Applications
- Solar panel rail and mounting tape installations on metal and sandwich panel roofs
- VHB tape bonding on painted metal, glass, and plastic substrates
- Signage, construction, and automotive assembly applications
- Any application where VHB tape is used on a low-energy or challenging surface
Installation and Safety Notes
Use in a well-ventilated area. Keep away from heat sources and open flame. Allow primer to dry fully before applying tape. Follow the 3M product data sheet for full application guidance and safety information. For solar mounting applications, ensure the tape and primer are rated for the expected load, wind uplift, and temperature range of the installation.
Return Policy
xWe offer a 14-day, no-quibble returns or replacement policy because we want you to be totally satisfied with your purchase.
If you are unhappy in any way with your purchase, you can return it for a refund or a replacement, as long as you return it in the same condition as it arrived (original/undamaged packaging and product) and within 30 days of receiving it. We will pay for your return postage on a faulty item as long as you send it using Royal Mail 2nd class recorded delivery (for EU or International Shipments, you have to use our UPS account, we will provide you with a return label)
Please keep in mind the following:
- Non-faulty items returned after 14 days and/or not in their original, undamaged packaging can only be exchanged for store credit - 15% off the items returned.
- Items returned within 14 days but not in their original and undamaged packaging will also incur a -15% charge per package.
- If you return an item that doesn't adhere to our returns procedure or doesn't include a returns form, you may be liable for a £10 administration fee
- Individual items from a bundle can't be returned, refunded or exchanged. If you want a refund/credit/exchange for a bundle, all items must be returned to us.
Before you return your item, please make sure that:
- You follow our returns process (outlined below)
- The goods and packaging are undamaged
IMPORTANT: We need to be able to identify an item with your order. We can only do this if you follow our returns process. Please do not send us items back that do not follow this process as they cannot be identified properly and will not be replaced or refunded.
What delivery method do I need to use when returning an item?
You must send the goods back to us via Royal Mail 2nd class recorded delivery. Refunds on faulty items returned are reimbursed within 5 working days.
Can I return just one item from multiple purchases?
Yes. Once you start the returns process you will go to a page that will allow you to choose which items you want to be replaced or refunded.
Returning faulty goods
If your item is faulty, you need to follow the returns policy, where you will be able to state that it’s faulty. The product will then arrive at our warehouse for testing.
If your purchase is not within 14 days
You can still exchange your item for a different product or for credit to use on the Voltacon Solar or Ledison-led-lights.co.uk websites (-15% from the credit amount).
Returns outside of the 14-day period do not qualify for the free returns policy.
Returning an item within the warranty
If you have a warranty and want to return a faulty item, you just need to follow our standard returns process. When we receive your item, we will then check that it’s within warranty and for any faults before arranging a replacement.