Project: Seal shower tray – spraying
SPEEDLINER PRO – Spraying
We show you how to seal a leaking shower tray in your camper or caravan yourself with SPEEDLINER PRO. Free step-by-step online guide, video and printable PDF.
All required products are pre-listed in a ready basket. Add everything with one click.
Have fun—it’s easier than you think ;-)
Complete basket:
All products for your shower tray sealing project
Find everything in the ready basket; just add your color pigment and adjust quantities if needed (to color pigment >>).
PROJECT GUIDES
Video guide:
Seal a shower tray with SPEEDLINER PRO
How to seal your shower tray yourself—step by step and easy to follow.
Step-by-step guide:
Fix your leaking shower tray step by step
All steps to seal it yourself: prep, sanding, priming and coating—with practical tips for a durable result.
Step 0: Check tray suitability
Most trays are PVC or ABS (fine). Rare plastics (e.g., PST) should be tested for strength/adhesion first.
We recommend contacting our application technician if unsure.
Step 1: Masking
Spraying needs a bit more masking.
Apply a 20 mm tape parallel to the tray rim, then cover the gap with a 30 mm tape. This master tape is removed after coating. Protect all other areas with paper/film. Seal the drain.
Step 2: Sand the tray
Clean and sand thoroughly with 80-grit. Also sand the edges; don’t damage the master tape.
If needed, repair cracks with a plastic stapler, seal with PU sealant and support soft bottoms with expanding foam. More info: repair a cracked shower tray.
Step 3: Clean & prime
Vacuum dust. Use PLC cleaner or brake cleaner to remove grease/wax.
Brush on PP100 plastic primer thinly and evenly on all plastic surfaces (floor, sides, rims).
Let dry 20–30 min (max 2 h). After 2 h, re-prime if needed.
Step 4: Mix coating material
For an average tray, the SPEEDLINER PRO 1-bottle set is sufficient.
Pour liquid pigment into component B and shake 10 s. Pour colored B into A and shake ~60 s.
Important: Mix only one pack at a time and use immediately.
Screw spray gun onto component A and start coating.
Step 5: Spray
Compressor 4–4.5 bar. Test on cardboard and fine-tune pressure.
Spray edges/corners and drain first (optionally brush these areas).
Sides ≈ 1.0 mm, floor/flat areas ≈ 1.5 mm film thickness.
Thicker builds are possible any time (2nd/3rd pass without waiting).
Step 6: Short break
Let it set for about 20 minutes.
Step 7: Remove master tape
Carefully remove at a 45° angle.
Step 8: Topcoat (optional)
White coatings are not UV-stable (yellowing). Topcoat prevents this; recommended for colors lighter than light grey.
Apply Topcoat after ~45 min up to 24 h without extra primer (we recommend ≥12 h). Rolls/brushes well.
Drying: touch-dry ~2 h, dry ~12 h; usable ~48–72 h; full properties ~3 weeks.
Step 9: Demask
Let the coated tray dry at least 12 h and keep away from water/moisture. Protection increases while curing and bonds permanently.
After 12 h remove film/paper/remaining tape.
All done!