Categories
Exterior & Lighting You Can Do It! DIYs

How to properly install exterior car parts with 3M VHB double-sided foam tape

3M double-sided adhesive-backed foam tape–called VHB, or “very high bond” tape– is one of the greatest things to come along for car folks in a long time. It allows you to securely and permanently mount all manner of accessories to the outside of your car without making a permanent commitment.

However, amid reports of spoilers flying off, parts failing to stay put, and items being mounted crookedly, we felt the need to present some tips on how to best install items using this tape, as many items from Fastline Performance and ATLP use it for installation.

In this post, we are installing a Fastline Performance decklid spoiler on a TSX. You will use the same techniques involved with installing the spoiler in this post on any part that has double-sided tape; S2000 bumper caps, ATLP roof spoilers, A-Spec or OEM lip kits…anything that needs to mount in a specific location with double-sided tape.

Update March 22, 2020:

In recent years we have posted a video outlining the below process on YouTube! See it in living color here:

First, get all your materials ready:
  • Isopropyl Alcohol
  • Blue Painter’s Tape
  • A clean rag (mine’s stained but clean)
  • Part with 3M tape pre-applied
Prepare the surface where the item will be mounted.

A clean, dry surface is required in order for parts to stick properly. Alcohol removes contaminants and evaporates quickly without damaging painted surfaces.

Prepare the tapes on the part for test-fit.

Here is where the special method comes in. Instead of pulling away all the backing and trying to stick the spoiler on, pull just an inch or two of backing away and attach it to the outer side of the part with the painter’s tape.

On many of the Fastline or ATLP parts, the strips terminate in the middle of the part as well as at the ends. I like to do a small section at either end of the tape strips.

Mockup the part on the car my lightly installing.

With just a small section of the backing pulled away, you can put the part where you want it to go, without having it stick in place so much that you can’t reposition it.

Thoroughly examine the positioning of your part, making sure it is centered and matches the curvature of the mounting surface.

On this spoiler we have gotten it to a good position. Now we can peel the rest of the backing away to stick it in place exactly where we have it.

Gently pull away the tape backing with the part in place.

Check out the technique here…the backing can be pulled out from under the spoiler from the side.

Here is a side view. Gently pull the backing out, putting light pressure on the part to keep it steady or in place as needed.

You can even do a double move. I am peeling from the middle here. Usually, I like peeling from the middle first, toward the edges.

Press the part in place.

Once all the backing is peeled form under the part, apply some really firm pressure for about 30 seconds in all mounting places. The 3M tape needs to bond with the mounting surface, and it needs pressure to do this. The part will seem like it is stuck on but keep pressing for at least 30 seconds.

Step back and admire.

And there you have it, mounted flat just where you want it! Now for some gratuitous shots of our Fastline Performance Decklid Spoiler for the 04-08 Acura TSX 🙂

This spoiler was modeled after the EDM Ducktail spoiler, which has a nice, low profile look but is fiendishly hard to get and is very expensive.

We are proud of this part. It is definitely a cut above eBay quality, for sure. Also available in carbon fiber.

Thanks for reading!