Applying framing tape to the back of a picture frame

How to Seal the Back of a Picture Frame with Frame Sealing Tape

Applying framing tape to the back of a picture frame

Applying self-adhesive Frame Sealing Tape (also called Framing Tape or Backing Tape) to the back of a picture frame can provide a number of benefits:

  • Firstly, Framing Sealing Tape can help seal the picture frame package to help provide added protection against any major changes in humidity and moisture over time.
  • Secondly, sealing the exposed gap around the back of a picture frame will help prevent any build up of dust and even insects from possibly getting inside the picture frame.
  • Finally, sealing the back of a picture frame provides a neat and professional overall finish.

Choosing the Right Frame Sealing Tape

When it comes to choosing the right frame sealing tape, you need to use a quality, long-lasting tape that is durable with a strong adhesive that will not deteriorate rapidly over time.

Keep in mind that picture frame could be hanging on a wall for years, if not decades, so never use a short term tape such as masking tape. The adhesive on masking tape will let go just in a matter of months.

Also, don’t use cello tape such as normal box packing tape. Likewise, this is not designed for long term use and will gradually just breakdown and let go.

A good quality tape for sealing a picture frame will be thick than most tapes, with a strong, long-lasting adhesive which will also be resilient against any major changes in temperature and heat.

Profile Professional Frame Sealing Tape can comes in a variety of convenient roll widths for different shapes and sizes of picture frames: 

Roll of 36mm wide framing tape
Steps for Applying Framing Tape to Seal a Picture Frame

We have created both a step-by-step guide and also a demonstration video to help you.

You can either refer to the handy video link below, or continue below to read through our visual step-by-step guide.

Step 1 - Applying the Framing Tape

With the picture frame turned over to show the back, apply lengths of frame sealing tape along each side of the frame, long enough to overlap each corner.

applying a strip of framing tape to the back of a frame

You can do this in ‘pinwheel’ technique, where you apply one side, rotate 90 degrees, apply the next side and repeat.

To help avoid any wrinkles or creases when adhering the frame sealing tape, lightly smooth each length of the frame sealing tape from the center, outwards towards the edges.

Burnishing the frame sealing tape

A good quality, self-adhesive frame sealing tape should have some be slightly flexible with a slight ability to stretch and shape itself into the contours and gaps of the frame.

To ensure a good seal, take time to firmly burnish and press the frame sealing tape along every length. The frame sealing tape must adhere and make firm contact with all the contours of the frame back. This ensures the tape cannot be easily torn the picture frame remains sealed.

For picture frames with deeper rebates and off-set backings, you can cut, crease and fold the framing tape to suit the shape required. A good quality frame sealing tape will also be able to stick to itself, allowing you to apply extra overlapping layers if required too.

Step 2 - Trimming the Frame Sealing Tape

When you’ve finished applying the framing sealing tape, you can neatly trim away the excess overlapping frame sealing tape with a craft knife. Take care when trimming the edges of the framing tape, to ensure the picture frame isn't damaged.

Trimming the frame sealing tape on the back of the picture frame
After taping and trimming the tape edges on all four sides of your picture frame, it should look like this:

Completed sealed picture frame with tape
Now that your picture frame is professionally sealed and protected, the next step is to apply the hanging wire and fittings to the back of the frame.

Check out our helpful blog below for some helpful steps on how to do this:

Shop Now! - Explore Profile’s range of professional grade Frame Sealing Tapes and other Framing Accessories

Want to read more? You may also like:

Jared Davis is one of only a few qualified Master Certified Picture Framers in Australia with over 30 years of custom framing experience.

Jared is published author, writer and an industry-recognised educator who teaches classes and workshops to professional picture framers all around the world.