How to seal a table tennis blade so the face veneer does not tear when you change rubbers: when sealing is worth it, how to apply a legal coat, and the ITTF limit of 0.1mm that a sealer must stay under.
What sealing protects against
Every rubber change pulls on the blade’s outer ply. Glue grips the wood fibres, so when the old sheet comes off, some fibres can come with it. On a soft veneer that can mean small splinters, and after enough changes, a rough, torn face that no new rubber will sit flat on. A thin sealer binds the surface fibres together, so the glue grips the sealer rather than tearing the wood.
Water-based glue adds a second reason. Water can raise the fibres of a soft, unsealed veneer, which makes the face rougher with every regluing. A sealed face does not absorb the glue in the same way, so old glue also rubs off more cleanly when you change rubbers.
When to seal, and when not to bother
Seal the blade if
- It has a soft face veneer, such as Limba or Ayous, which tears most easily.
- You change rubbers several times a season, or try out different sheets.
- The blade is new and has never had a rubber on it. Bare, clean wood is the best surface to seal.
- You can already see small splinters or raised fibres on the face.
You can skip it if
- The face veneer is a hard wood such as Koto, Ebony or Rosewood, and you rarely change rubbers.
- You keep the same rubbers on for a long time and want the strongest possible glue bond.
- The blade already has a factory finish. You can usually see and feel it as a smooth, slightly sheened surface.
How to seal a table tennis blade
Use a lacquer sold for sealing table tennis blades. The aim is the thinnest coat that covers the wood, not a finish you can see.
Start with bare, clean wood
Remove the old rubber by peeling slowly from the handle end, close to the blade surface. Rub off every trace of old glue with your thumb. The face must be clean and completely dry.
Smooth raised fibres only
If there are raised fibres or small splinters, smooth them with very fine sandpaper, working gently with the grain. Do not sand a face that is already smooth. Wipe off all the dust.
Apply one very thin coat
Spread a small amount of sealer across the face with a lint-free cloth or a soft brush, along the grain, in one even layer. Cover the whole playing surface. Leave the handle unsealed so your grip does not change.
Let it cure, then check
Leave it overnight. The face should still look and feel like wood. If a second coat seems needed on a very soft veneer, keep it as thin as the first, and let that cure overnight too.
Then glue the rubbers on as normal with a VOC-free, water-based glue. How to glue table tennis rubber walks through it step by step.
Is blade sealing legal?
Yes, within limits. The ITTF’s Technical Leaflet T4 permits a very thin layer of lacquer on the blade, and only to anchor the wood fibres so that rubbers can be replaced. Its conditions are:
| Condition | What it means in practice |
|---|---|
| No more than 0.1mm thick | One or two very thin coats, never a built-up varnish. |
| Must not hide the wood from sight or touch | You should still see the grain and feel bare wood. A glossy, plastic-feeling face fails this test. |
| Only to anchor wood fibres | Anything thicker is treated as a layer of plastic, which is not permitted on a striking surface. |
| Counts as part of the blade | The sealer does not count towards the thickness of the rubber. |
Sealing does not change the separate ITTF requirement that a blade is at least 85% natural wood by thickness. Every Loki blade is built to that rule; the UK table tennis blade guide explains it.
Does sealing change how a blade plays?
A legal, very thin coat makes little difference that most players can feel. Problems come from coats that are too thick. A heavy layer can make the face feel harder and less connected to the ball, and the glue bonds less well to a glossy surface, which leads to air bubbles and edges that lift. If you have over-sealed, rub the face back lightly with very fine sandpaper until it feels like wood again before you glue.
Which Loki blades benefit most
The outer ply that a rubber is glued to is the face veneer, listed on every Loki blade page. Across the 39 blades in the range, it is one of five woods.
| Face veneer | Blades | Sealing | Examples |
|---|---|---|---|
| Limba | 17 | Recommended if you change rubbers. A soft, fibrous face. | W81 Wei Shihao ADC, Liang Jingkun ADC, Kirin K5, Hu Dongshen X |
| Ayous | 4 | Recommended. A light, soft face. | Kirin K1, Kirin K2, Kirin K3 |
| Koto | 16 | Optional. A harder, denser face, but worth it if you change rubbers often. | W81 Wei Shihao ARC, Telson Speed, Liang Jingkun ARC |
| Ebony | 1 | Usually unnecessary. A very hard face. | Kirin K9 |
| Rosewood | 1 | Usually unnecessary. A very hard face. | Kirin K10 |
Inner-fibre blades like the ADC models still have a wood face directly under the rubber, so the face veneer, not the fibre, decides how much sealing helps. For more on what each wood does, see the carbon fibre guide and the UK blade guide.
For the rubbers that go on next
Loki’s VOC-free glue and roller, priced live below.
Rxton Inorganic Glue “ONE” (100ml)
Water-based, VOC-free table tennis glue. It peels away cleanly when you next change rubbers, which is easier still on a sealed face.
Rxton Glue Roller Bar
A metal roller for pressing the rubber evenly onto the blade, so no air is trapped under the sheet.
Rxton Foam Rubber Cleaner (200ml)
Once the new rubbers are on, keep them gripping with a quick clean after each session.
Common questions
Is sealing a table tennis blade legal?
Yes. ITTF Technical Leaflet T4 permits a very thin layer of lacquer on the blade, only to anchor the wood fibres so rubbers can be replaced. It must be no more than 0.1mm thick and must not hide the wood from sight or touch. A thicker coat counts as a layer of plastic, which is not permitted.
Should I seal a new table tennis blade?
It is worth it if the blade has a soft face veneer such as Limba or Ayous, or if you expect to change rubbers often. A new blade is the best time to do it, because the wood is clean and has never had glue on it. Blades with a hard face, such as Koto, Ebony or Rosewood, gain less from sealing.
Does sealing a blade make it faster or change the feel?
A legal, very thin coat makes little difference most players can feel. A thick coat can make the face feel harder and weakens the glue bond, causing air bubbles and lifting edges. If you have over-sealed, sand the face back lightly with very fine sandpaper before gluing.
How long should a sealer dry before I glue the rubber?
Let it cure overnight. A surface can feel dry to the touch well before the sealer has fully cured, and gluing too early can weaken the bond. Use a VOC-free, water-based glue once it has cured.
Choosing a new blade?
Find a Loki blade by its construction, face veneer and fibre, or browse the whole range.