Invisible anti-graffiti sealer for stone and concrete - ProtectGuard

A colourless sealer for porous materials: stone, concrete, brick, terracotta and render. It protects against water, oil, staining and graffiti without changing the colour or texture - it forms no film, so the substrate keeps breathing.

Surface

Block paving

The surface the manufacturer intends this preparation for.

Demonstration product image: Invisible anti-graffiti sealer for stone and concrete - ProtectGuardBlock paving

ProtectGuard is the opposite of the Wet Look range: it changes nothing in the appearance of the material. Once dry there is no sign the surface was treated - no film, no sheen, the colour and texture exactly as they were.

What sets it apart is the range of protection. Alongside water and oils the manufacturer lists graffiti - which is the argument on facades and walls in public places, where the point is that paint can be washed off before it enters porous brick.

Coverage is lower than the Wet Look range - the manufacturer states 6 m² per litre - because the product is applied to saturation: one coat, or two wet-on-wet. On vertical surfaces you work upwards.

The usual reason a sealing job fails is not the product but the substrate. A sealer will not bond to a surface with grease, lime efflorescence or an old coating on it.

  1. Wash the paving. Lift oil stains with a degreasing cleaner - water alone, even under pressure, will not shift them.
  2. Remove lime efflorescence with a product made for it, not with hydrochloric acid from the builders' merchant.
  3. Make good the joints and let them set. Sealer applied over an empty joint runs straight into the sub-base.
  4. Wait until the paving is dry all the way through, not just on top. Moisture trapped under the film can bloom it white.
  5. Check the forecast. Rain within a day of application will wash off a fresh coat.

New paving has to season first. Manufacturers state that period on the data sheet - usually around 28 days from the date the block was made. The figure for each product is under "Technical data".

Before sealing the whole area, test on a patch hidden by a planter or in a corner of the patio. The same product can read differently on two batches of the same material, and on a surface with old coating left on it, it will not bond at all.

Coverage
6 m²/l
Coats
1
Finish
invisible
Application method
low-pressure sprayer, roller, brush
Dilution
Do not dilute
Drying time
1 day
Full cure
7 days
Where to use
indoors, outdoors
Recommended substrates
natural and reconstituted stone, concrete, brick, terracotta, render
Final appearance
colourless, no change of colour or texture
Direction of application
on vertical surfaces, work upwards
Manufacturer's pack sizes
750 ml, 5 l, 10 l, 25 l
Will the sealer change the colour of my paving?

That depends on the finish given in the technical data. An invisible product leaves the colour alone, a wet-look version deepens it permanently, and a colour sealer gives it a new shade. Each product's finish is listed under "Technical data".

How do I know when to seal again?

By how the water behaves. While it still beads on the surface, the treatment is working. Once water starts soaking in and dark patches return after rain, the protection has worn out. We do not quote a number of years, because it depends on traffic, sun and whether the drive is salted in winter.

Can I apply sealer to wet paving?

No. Water occupies the pores the product is meant to enter, and stays trapped under the film. The result is often a milky bloom that cannot be removed without stripping the coat. The exceptions - products that allow slight surface dampness - say so in their technical data.

How much do I need to buy?

Use the calculator under the product description: it takes the manufacturer's coverage figure, the number of coats and the absorbency of the substrate, and turns them into pack sizes. On older, thirstier paving, work to the lower end of the coverage range.

Will sealing make the paving slippery?

Penetrating products form no film on the surface and do not change its grip. Where a manufacturer says something about slipperiness, we quote it in the technical data. If the surface is already slippery, the right product is an anti-slip treatment, not a sealer.

Is there really no visible difference after application?

The manufacturer describes the product as colourless and non-film-forming. What you do see is how the water behaves: instead of soaking in, it beads. That is the only visual sign the treatment is working.

Does that mean graffiti will come off by itself?

No. The product is there to make it harder for paint to enter the porous material, so that it can be removed with a cleaner - it does not remove the paint itself. For that you need a separate anti-graffiti product.

How does it differ from ImperGuard Ultra 4 in 1?

In range. ProtectGuard also protects against oil, grease and graffiti and is suitable indoors. ImperGuard is water repellency for outdoor surfaces - facades, roofs, drives - with higher coverage and a lower cost per litre.

The technical sheet and safety data sheet will be available after approval.

Coverage calculator

Enter the area and how absorbent the substrate is. We work out the litres and the packs.

The manufacturer states 1 l to approx. 6 m². Applied to saturation - one coat, or two wet-on-wet.

Substrate absorbency

Calculated at 6 m² per litre.

Example for 45 m²

7.5L

  • 1 × 5 l499,00 zł
  • 3 × 1 l330,00 zł

Enter your own area to calculate for your job.

Related products

Looking for another surface?

Go directly to the right category. We do not imply compatibility across materials.