Powerful Alkaline Cleaner for Deep Cleaning All Types of Stone: Grimex LTP (1L / 5L)

SKU: IPN-497 | VAT incl.
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Product number for Powerful Alkaline Cleaner for Deep Cleaning All Types of Stone: Grimex LTP (1L / 5L) : IPN-497
Packaging: 1 litre /5 litres
Powerful Alkaline Cleaner for Deep Cleaning All Types of Stone: Grimex LTP (1L / 5L) 1
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Powerful Alkaline Cleaner for Deep Cleaning All Types of Stone: Grimex LTP (1L / 5L) is a cleaner that deeply cleans surfaces made of natural stone. It is recommended to clean with this product after the initial installation of the stone and when deep cleaning is needed before impregnation.

When stone slabs are thoroughly cleaned with Grimex LTP, the impregnator can be absorbed up to 30% better, thus improving its efficiency and effectiveness.

Cleaning with Grimex LTP is suitable for both indoor and outdoor use. It is an effective solution for removing stains, oils, greases, stubborn dirt, and old wax layers.

Why Use Grimex LTP?

  • Effective for removing stains, oils, greases, stubborn dirt, and old wax layers.
  • Ideal for renovating and refreshing old surfaces (deep cleaning).
  • Perfect for both indoor and outdoor use.
  • Easy to use.
  • Highly aggressive alkaline product (PH 14) suitable for any type of stone for initial cleaning before impregnation or for restoration (renovation) of worn stone.


Test the solution on a small area before general application. Any alkalinity left on surfaces treated with this product must be completely neutralized. This can be done with clean water applied with a sponge.

Instructions for Use:

For lightly soiled areas and absorbent, highly porous tiles:

Dilute one part LTP Grimex in 10 parts warm water. Apply with a cloth or mop. Wipe well with a clean damp cloth.

Tools Required:


Mop or stiff brush (for more severe dirt)

For heavy-duty cases:

Dilute one part Grimex LTP in 3 parts warm water. Apply liberally, spreading over the surface of the tiles. If necessary, stir with a cleaning brush. Let it react for 5-10 minutes, maintaining moisture with additional solution. Spread over the surface again, wipe, and rinse thoroughly with clean water.

For extremely severe cases:

Use undiluted liquid and stir with a cleaning brush or mechanical brush if necessary. Neutralize the treated surface with clean water after use.


For light cases - about 50 sq.m.

For heavy cases - about 20 sq.m.

For extremely severe cases - 5-10 sq.m.

Storage Information:

Store in a cool, dry place, away from freezing, in a sealed container.

Shelf Life:

Up to 5 years.

This product should not be used for daily cleaning of impregnated floors and walls.

Like every beautiful thing and like every natural material, natural stone requires proper care and maintenance.

We recommend: always treat stone surfaces with the right products for natural stone!

Regardless of the type of stone and its location, a single application of sealing agent will save you unnecessary worries and greatly facilitate maintenance.

Everything needs care. Use the high-quality German products from AKEMI, with which we have been working and recommending for years.

The treated impregnated surface does not allow water and contaminants to penetrate.

The protection with a sealer provides resistance against the destructive cycles of freezing and melting in external conditions. Water simply does not absorb when the stone surface is impregnated but forms droplets.

Depending on the type of sealer, it may not alter the external appearance of the stone or deepen its colors. Choose among the following types of sealers:

"Universal" sealer, which does not change the appearance of the stone and protects against water.
"Wet Effect" - a powerful sealer, like the Universal one, but with colors standing out in a more intense contrast.
"Stain-Free" is the best sealer: it protects against water and grease, also without changing the external appearance of the stone.

The frequency of reapplication depends on conditions and the usage of the stone tiles (whether it is flooring and traffic intensity). Usually, AKEMI recommends every 5 years for exterior stone, flooring + wet areas, and 10 years for interior stone (wall cladding).

How to apply the sealer? - It's easy, like child's play. The stone surface must be clean and very dry. The liquid is applied undiluted with a roller, sponge, or brush. If the surface is smooth polished or matte, a second step is required: the so-called "polishing" with a microfiber cloth for 20 minutes after applying the sealer. And we're done.

What cleaning products are used for natural stone? - Some types of stone, such as marble and travertine, are sensitive to acidic, very strong cleaning agents (e.g. bleach). We recommend: always clean your stone surfaces with a pH-neutral cleaning agent.

Ask us if you have any more questions! We are here and happy to assist.

How to breathe new life into natural stone in the exterior?

In a few steps, natural stone can be restored to its original state, in its full brilliance and aesthetics.

First and foremost is regular cleaning and at least once a year thorough washing with a pressure washer. This is particularly important for our outdoor furniture products (barbecues, sinks, tables, countertops, and pavement tiles).

Once the surfaces are clean and dry, do not forget to apply a sealer.

Tip: Protect your outdoor flooring from furniture that may rust.

For specific stains such as oily spots, efflorescence (cement milk), mold, cement residues, or grout mixtures, silicones, or paints, it is best to contact us directly for consultation. Count on us; we will provide you with the right products to address the issue, wherever and whenever possible.

The durability of natural stone depends on the specific porosity of the stone type and its water absorption levels. For example, the porosity of granite and gneiss is around 1%, while sandstone has over 20%.

The biggest destructive enemies for items, coverings, and pavements exposed year-round are the sun and freeze/thaw cycles. When the stone is sealed/waterproof, you will receive maximum protection and much easier maintenance.

In severe cases of areas with contamination, the non-polished stone surface can be treated with an angle grinder and fine sandpapers. This process removes the top layer of the stone, making it look like new. (The process is similar to sanding wooden parquet.)

Stone is the best friend of the yard and garden. With love for beautiful, natural materials and proper care, the stone will continue to bring you joy for many years to come.
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