Invisible or wet look - choosing a sealer finish

Many sealers come in two versions: invisible, and wet look. The only difference between them is what you see once it dries. The decision is more serious than it looks, though, because a wet look cannot be undone except by stripping the layer.

In short

Invisible is meant to leave the colour alone.
On very absorbent, matt material it can still deepen the shade slightly, simply by filling the pores.
A wet look deepens the colour permanently.
It looks like a surface after rain, except it never dries out.
Colouring changes the colour and covers.
The choice for a surface with colour patches that washing did not lift.
Test on a patch, not on the whole thing.
Behind the house, and once dry - a wet surface always looks different.

What a wet look actually does

When it rains, water fills the pores of stone and paving, light stops scattering off them, and the colour reads as deeper. A wet-look sealer does the same thing, except it fills the pores with resin that does not evaporate. Hence the name, and hence the permanence.

In practice that means pale sandstone turns noticeably warmer and grey paving turns graphite. On material that is already dark the difference is often smaller than people expect. Which is why a test patch matters more here than for any other decision.

Three sandstone samples with different colour saturation — The same sandstone in three states: untreated, deepened, tinted.

Three finishes side by side

Finish	What it does to the colour	Reversible?	Typical choice
Invisible	Leaves it as it is	In practice, nothing to reverse	New paving, pale stone, render
Wet look / satin	Deepens it, as after rain	No - not without stripping	Faded paving, patios, decorative stone
Colouring	Changes it and covers unevenness	No	Older paving with colour patches

Pairs that differ only in finish

The difference is easiest to judge on the same preparation in two versions, for example: HK-1 and HK-2 for paving, SG-1 and SG-2 for polished granite, SM-1 and SM-2 for marble.

Want the wet look without the sheen? An excellent choice is ProtectGuard WL Mat from Guard Industry - the matt version of the satin ProtectGuard WL.

Stone cross-section with open pores and pores filled with resin — Stone pores open and filled with resin - where the wet look comes from.

Invisible sealers

For when you want to keep the natural colour of the surface.

Wet-look sealers

Deepen the colour permanently, as after rain - a good fit for faded surfaces.

Common questions

Can a wet look be removed?

Practically, no. The resin sits in the pores of the material, so removing the effect means taking off the surface layer. Treat the decision as permanent.

Does an invisible sealer change the sheen?

No. On very absorbent, matt material it can deepen the shade marginally, because it fills the pores - but it will not add sheen. If you want sheen, choose a gloss-finish sealer.

Can invisible and wet look be combined on one surface?

They can, but the border between them will show. Run it along an existing division - a kerb, an expansion joint - rather than through the middle of a continuous plane.

Which finish stands up to sun better?

The finish alone does not decide that - resistance to sun depends on the preparation, not on the look it gives. If you are torn between two, write to us and we will compare them.

Invisible sealer or wet look