How to Print on Waterslide Decal Paper with an Inkjet Printer? | Coated Side and Three Coats

Print on the coated glossy side of inkjet waterslide paper, let the ink dry, then seal the full sheet with at least three light coats of clear acrylic spray before the decal touches water.

Inkjet ink is water-soluble and a decal is headed for water, so skip sealing and the image bleeds or slides off the moment it hits the bowl — the spray coat matters more than any printer setting. The method below follows Hayes Paper Co.’s sealing instructions and a Decal Specialists inkjet guide.

Which Waterslide Decal Paper Do You Need?

Buy paper explicitly labeled for inkjet printers and choose clear or white based on the surface. Laser-only sheets have different coating behavior and are not a substitute in an inkjet.

Clear film adds no white ink, so it works on light and white surfaces where the background shows through. White film carries a white layer that keeps colors correct on dark or black surfaces. Pick clear film for a dark mug and the image goes faint and muddy.

Hayes sells inkjet clear paper in 20-sheet A4 packs (roughly 8.27 × 11.69 inches). US buyers more often want Letter at 8.5 × 11, so check the size line before ordering. Comparable 20-sheet inkjet packs have sold from about $12 to $21 depending on seller and size.

What Printer Settings Should You Use?

Load the sheet glossy side toward the print head and select the highest quality mode. In the paper-type menu, choose Glossy Photo Paper or the closest heavy coated-paper option — that tells the printer to lay down ink slowly instead of flooding a plain-paper sheet.

Find the coated film side first: one side is smooth and slightly slick, the other rougher and duller (it only holds the film until it slides off in water). Printing on the rough backing ruins the decal. Holding the sheet at an angle to a lamp makes the difference obvious.

Resize your artwork on the computer at actual print size first. Any working inkjet plus the right paper setting will do. If you’re still deciding what to print on, this roundup of inkjet printers tested for decal work covers models that feed coated stock without jamming.

How Long Should It Dry Before Sealing?

Hayes recommends waiting at least three minutes before sealing; a separate inkjet sheet calls for about an hour before cutting or immersion. Real drying depends on ink coverage, humidity, and the paper, so treat the shorter number as a floor.

Keep the sheet whole while sealing. Decals cut out before spraying let sealant creep onto the edge and bond the film to its backing, so it won’t release. Lay the full sheet printed side up on protected cardboard and don’t touch the wet ink.

Spray outdoors or with strong ventilation. Hold the can about 12 inches away and move in changing directions. Let each coat dry completely, then build up at least three, with later passes fuller than the first. One heavy wet coat pools, mottles the print, and can lift the ink. Hayes advises protecting your respiratory system, so a mask counts as good practice; keep the can away from ignition sources.

How Do You Apply the Finished Decal?

Cut around the artwork once the sealant is fully dry, leaving only a small border — excess clear film stays visible on a transparent decal. Drop the cut piece in tepid water for 30 to 60 seconds, then set it aside briefly so water works through the backing and wakes the adhesive.

Slide the decal off its backing onto the cleaned surface, then push trapped water and air from the middle toward the edges with a gentle finger or soft cloth. Keep the soak quick — hot water or a long soak over-softens the film. A clear gloss coat after the decal dries adds protection if compatible with the object and the paper maker’s instructions.

One honest limit: this process is for decorative transfers. Neither cited sheet establishes suitability for food-contact surfaces, drinking rims, skin, children’s products, dishwashers, ovens, flames, or long outdoor exposure. Surface prep, curvature, and handling affect how long a decal holds up, and a few products are advertised as no-spray — the Hayes and specialist instructions still call for sealing ordinary inkjet output, so follow the sheet that came with your paper.