How to Use Sublimation Coating Spray

On this page (9 sections)

1. What is sublimation coating spray?
2. How do you use sublimation coating spray?
3. How do you apply the coating evenly?
4. How long should sublimation coating spray dry and cure?
5. How do you heat press a coated blank?
6. What safety steps matter when using coating spray?
7. What if the coating or transfer looks uneven?
8. Is sublimation coating spray better than transfer paper?
9. Which sublimation coating spray should you choose?

Apply sublimation coating spray in light, even coats to a clean compatible surface, then let it dry and cure as the spray maker directs before pressing. Test on a spare piece first, because the right coating and transfer steps depend on the material and spray.

Sublimation coating spray, also called sublimation spray coating, is meant to prepare certain surfaces to receive sublimation ink. It isn't a universal fix for every blank, and using too much or pressing before the coating is ready can lead to uneven results.

What is sublimation coating spray?

Sublimation coating spray is a surface treatment for compatible items that need a sublimation-ready coating. The coating gives the ink a surface to transfer onto when heat and pressure are applied.

The exact materials, application method, drying time, and cure requirements vary by spray. Read the product instructions before starting, and use the coating only on surfaces the maker identifies as compatible.

Coating spray doesn't replace a sublimation printer, transfer paper, or a heat press. If you're choosing a project first, this guide to what sublimation printing is used for covers common applications.

How do you use sublimation coating spray?

Clean and dry the blank, apply thin even coats, and let the coating dry and cure fully before pressing. Follow the spray's own directions for distance, number of coats, ventilation, drying, and curing.

1. Check compatibility. Confirm that the spray is intended for your blank's material and finish.
2. Prepare the surface. Remove dust, oil, and residue using a method safe for that material, then let it dry.
3. Protect the work area. Use the ventilation and overspray precautions on the spray instructions.
4. Apply a light coat. Keep the spray moving and aim for even coverage. Avoid pooling, runs, and thick wet patches.
5. Dry and cure as directed. Give the coating the full time and conditions the maker specifies.
6. Press a test piece. Use the transfer and heat settings recommended for the coating and blank.

Don't add extra coats just because the surface looks dry or matte. More coating can change the finish and transfer behavior, so follow the maker's stated coat count.

How do you apply the coating evenly?

Use controlled passes and aim for a thin, uniform layer. Keep the can or spray tool at the distance and angle stated in its instructions, and overlap passes only as recommended.

Work in a ventilated place and protect nearby surfaces from overspray. Avoid spraying near flames, heat, or anything else the product label warns about.

Inspect the blank under good light before drying. If you see puddles or runs, don't press over them; follow the coating instructions for correcting or restarting the application.

How to use sublimation coating spray on wood

Use a wood coating only when its instructions say it suits that type of wood and finish. Wood can absorb coating unevenly, so test first and follow the directions for coat thickness, drying, and curing.

For the heat transfer itself, blank construction and its recommended settings matter. See sublimation on wood time and temp before pressing a coated wood project.

How to use sublimation coating spray on ceramic

Choose a coating intended for the ceramic surface and follow its cure directions. A coated ceramic blank may need different preparation from a ready-to-sublimate tile, so don't assume the same spray or settings work for both.

If your blank is already sublimation-ready, it may not need an added coating. Our guide explains how to sublimate on ceramic tiles.

How long should sublimation coating spray dry and cure?

Wait for the full drying and curing time in the spray instructions before pressing. Drying removes the wet appearance; curing may require additional time or conditions, depending on the coating.

Don't use a transfer as a shortcut to cure a surface unless the maker specifically directs that process. Heat can affect an uncured coating and may create a poor finish or transfer.

Keep the coated item in the recommended position while it dries. Avoid touching or stacking it until the coating is ready for handling.

How do you heat press a coated blank?

Press only after the coating is fully ready, using settings intended for that coating and blank. Follow the coating and blank instructions for temperature, time, pressure, transfer placement, and any protective sheet.

Place the design and transfer carefully so they don't shift. Keep hands away from the hot platen, and use suitable heat protection when handling the press or warm blank.

The Fancierstudio Digital Heat Press 15 x has electronic time and heat control, adjustable pressure, a Teflon-coated platen, and a 15 x 15 in heat press sheet.

Check that the press's surface and opening fit your blank before choosing it. Follow the coating maker's settings even when the press offers a wider temperature or time range.

For smaller projects, consult the specific instructions for sublimation magnet time and temp. A blank's recommended settings may differ from another material's.

What safety steps matter when using coating spray?

Follow the spray label for ventilation, protective equipment, storage, and fire precautions. Keep people and pets away from the work area while spraying and until the product's instructions say the coated item is safe to handle.

Never spray toward a heat press, hot surface, flame, or electrical equipment. Move the blank to the press only after the coating has dried and cured as directed.

For heat handling, the KITCHEN PERFECTION Smoker BBQ Grill Gloves -High are 11 in cotton and silicone gloves with a five-finger design.

Use gloves only as directed and keep them clear of the press platen. They don't replace careful handling or the coating's safety instructions.

What if the coating or transfer looks uneven?

Stop and check the surface preparation, coating coverage, drying, and press setup before repeating the transfer. Blotchy areas can point to uneven coating, residue, a coating that wasn't ready, or a transfer that shifted.

Don't try to fix a failed surface by adding another coat over a pressed design unless the coating maker says that is acceptable. Test any correction on a spare blank first.

Check that the transfer stayed flat and that the press made even contact. If the coating directions don't explain the issue, contact the coating maker before using the process on a finished item.

Is sublimation coating spray better than transfer paper?

They serve different roles: coating spray prepares a compatible surface, while transfer paper carries the printed design. Don't treat them as substitutes.

Hayes Waterslide Decal Paper for Inkjet Printers is a separate craft transfer material, intended for inkjet printing and water-slide application rather than this coating-and-heat process.

Use the paper only for a project that suits its instructions. Its application involves printing, sealing, soaking, and sliding the decal onto a surface, which differs from pressing a sublimation transfer.

Which sublimation coating spray should you choose?

Choose a spray based on the material it supports and the clarity of its application, drying, and curing instructions. The best sublimation coating spray for one blank may not suit another.

Before buying, check that the instructions identify your surface and explain how to apply and prepare it for heat transfer. Avoid products that leave you guessing about compatibility or cure time.

If you're adapting coated blanks for ornaments, explore these sublimation Christmas ornament designs for project ideas. For other blank types, see how to do sublimation wind spinner, how do you sublimate onto ceramic trinkets, and can you sublimate on faux leather.

Use a coating spray when the blank maker calls for one and the spray instructions match your material. If the blank is already ready for sublimation, follow its own transfer directions instead.

Frequently asked questions

What is sublimation coating spray?

Sublimation coating spray is a surface treatment intended to give a compatible item a coating that can accept sublimation ink. It does not make every material suitable for sublimation, and results depend on the spray instructions, the surface, and the heat transfer process.

How many coats of sublimation spray should I use?

Use the number of thin coats specified by the spray maker. If the instructions don't give a coat count, don't guess on a valuable blank; test a spare piece and look for even coverage without puddles, runs, or visibly wet spots.

Does sublimation coating spray need to dry before pressing?

Yes, let the coating dry fully before adding a transfer or applying heat. Follow the spray maker's stated drying and curing directions, including any ventilation or handling precautions, since a dry surface may still need a separate cure step.

Can I use sublimation coating spray on any surface?

No. Use a coating only on surfaces its maker identifies as compatible, and follow the instructions for that material.

Test first because surface finish, coating thickness, drying, curing, and press settings can affect transfer results.