PLASTIMUL Bituminous Emulsion Waterproofing and Adhesive Solution 20kg

Mapei PLASTIMUL – Solvent-Free Bituminous Waterproofing Emulsion

Mapei PLASTIMUL is a solvent-free, water-based bituminous waterproofing emulsion formulated from selected water-emulsified bitumens, fine-graded aggregates and additives. It is designed for cold-applied waterproofing of foundations, retaining walls, masonry and concrete structures below ground level.

Its thixotropic paste consistency makes it suitable for horizontal, vertical and sloping surfaces. Once completely dry, PLASTIMUL forms a waterproof bituminous coating that resists re-emulsification after prolonged immersion in water, including slightly acidic or alkaline conditions, and provides protection against aggressive agents commonly found in soil.

Key Benefits

• Solvent-free, water-based bituminous waterproofing emulsion.
• Forms a flexible, waterproof coating when completely dry.
• Suitable for horizontal, vertical and sloping surfaces.
• Thixotropic paste consistency for convenient application.
• Designed for waterproofing foundations and retaining walls.
• Suitable for below-ground masonry and concrete structures.
• Resistant to re-emulsification after prolonged immersion in water.
• Resistant to slightly acidic or alkaline water conditions.
• Resistant to aggressive agents present in soil.
• Complies with EN 15814 requirements for polymer-modified bituminous thick coatings.

Typical Applications

PLASTIMUL is intended for general-purpose bituminous waterproofing of suitable concrete and masonry structures.

• Waterproofing foundations and foundation walls.
• Waterproofing retaining walls.
• Cold-applied waterproofing of masonry and concrete structures.
• Waterproofing flat or curved surfaces on below-ground structures.
• Waterproofing underground tunnels and underpasses.
• Waterproofing horizontal concrete structures beneath screeds isolated with polyethylene sheets.
• Below-ground concrete and masonry surfaces exposed to soil moisture.

Application and Installation

1. Substrate Preparation

The substrate must be sound, clean and free from cement laitance, dust, grease, oil, form-release compounds and loose or crumbling material.

• Remove loose material and surface contamination.
• Ensure masonry joints are properly filled and the surface is sufficiently even.
• Repair cracks, gaps and damaged areas using a suitable Mapei Mapegrout repair mortar.
• Remove uneven areas and gravel clusters from concrete surfaces.
• Round off sharp edges where required.
• Form a suitable fillet at the junction between foundation bases and vertical walls.
• Seal structural joints using Mapeband TPE bonded with Adesilex PG4, following the manufacturer's detailing instructions.
• Horizontal surfaces that will be buried or covered by screed should have a minimum slope of 1% to allow water to drain away.

2. Priming

Prime the prepared substrate before applying the waterproofing coats. Mapei specifies either of the following methods:

• PLASTIMUL diluted primer: Dilute PLASTIMUL with approximately 45–50% water and mix until completely blended. Apply by brush, roller or spray.
• PLASTIMUL C primer: Alternatively, use PLASTIMUL C diluted 1:10 with water, following its separate technical data sheet.

Allow the primer to dry completely before applying the neat waterproofing coats.

3. First Waterproofing Coat

Apply neat PLASTIMUL at a minimum wet thickness of 1.5mm using a suitable trowel, brush or spray equipment.

4. Second Waterproofing Coat

Apply a second coat of neat PLASTIMUL at a minimum wet thickness of 1.5mm using a trowel or spray, following the manufacturer's application instructions.

EN 15814 thickness requirement: To achieve the stated performance levels in accordance with EN 15814, Mapei specifies at least two coats with a final dry coating thickness of at least 3mm. Wet application thickness and final dry thickness are different measurements, so the applied quantity must be sufficient to achieve the required dry thickness.

Consumption and Coverage

• Primer consumption: Approximately 0.5kg/m² of diluted product.
• Waterproofing consumption: Approximately 1.7kg/m² per mm of dry product thickness on a flat surface.
• Minimum wet thickness: 1.5mm per coat.
• Coats required: At least two for the specified EN 15814 performance.
• Final dry thickness: At least 3mm for the stated EN 15814 performance requirements.

For guidance, a 3mm dry coating thickness represents approximately 5.1kg/m² at the manufacturer's stated consumption rate, excluding primer and additional material required for uneven substrates or application losses.

Actual consumption will increase on rough, uneven or irregular surfaces. Always calculate quantities using the required finished dry thickness and the condition of the substrate.

Technical Specifications

EN 15814 Performance Classification

Mapei's technical data sheet gives the following performance classifications and test results:

These classifications relate to the manufacturer's specified test methods, coating thicknesses and test conditions. They should not be interpreted as approval for waterproofing structures exposed to water under pressure.

Packaging

• 12kg drum.
• 20kg drum.

Mapei's technical documentation also lists a 30kg drum format. Please check current UK availability before ordering this size.

Important Application Considerations

• Do not apply below +5°C or to frozen surfaces.
• Do not apply above +30°C, in accordance with Mapei's application recommendations.
• Do not apply if rain is imminent.
• Do not dilute with organic solvents.
• Do not use to waterproof structures exposed to water under pressure.
• Do not use on structures exposed to UV radiation without a suitable protective system.
• Do not use on surfaces in contact with organic solvents or mineral, vegetable or animal fats.
• Do not apply to containers used for storing edible products.
• Allow the coating to dry completely before backfilling or applying subsequent protection layers.
• Protect the waterproofing with a suitable protective drainage layer before backfilling foundation trenches.
• Use suitable backfill material without stones directly against the protective drainage layer.

Frequently Asked Questions

What is Mapei PLASTIMUL used for?

PLASTIMUL is a solvent-free bituminous waterproofing emulsion used to protect foundations, retaining walls, masonry and concrete structures below ground level.

Can PLASTIMUL be applied to vertical surfaces?

Yes. Its thixotropic paste consistency makes it suitable for horizontal, vertical and sloping surfaces.

How many coats of PLASTIMUL are required?

Mapei specifies a primer followed by at least two coats of neat PLASTIMUL. For the stated EN 15814 performance levels, the finished coating must achieve a final dry thickness of at least 3mm.

What is the coverage of PLASTIMUL?

The manufacturer's stated consumption is approximately 1.7kg/m² per mm of dry product thickness on a flat surface. At 3mm dry thickness, this equates to approximately 5.1kg/m², excluding primer and application losses. Primer consumption is approximately 0.5kg/m² of diluted product.

Can PLASTIMUL be used below ground?

Yes. It is designed for waterproofing foundations, retaining walls, tunnels, underpasses and other suitable below-ground masonry and concrete structures.

Can PLASTIMUL be used where water is under pressure?

No. Mapei specifically advises against using PLASTIMUL to waterproof structures exposed to water under pressure. A different waterproofing product or system must be selected for those conditions.

Can PLASTIMUL be used on exposed roofs?

PLASTIMUL is not intended as an exposed UV-resistant roof coating. Mapei advises against using it on structures exposed to UV radiation unless an appropriate protective system is provided.

What sizes is PLASTIMUL supplied in?

PLASTIMUL is listed in 12kg and 20kg drums for the available UK product sizes. Other packaging formats may be listed in manufacturer documentation, subject to availability.

Technical Downloads

Refer to the manufacturer's technical and safety documentation for full substrate preparation, application, consumption and performance requirements.

Buy Mapei PLASTIMUL from Clever Shield Coatings UK

Clever Shield Coatings UK supplies Mapei waterproofing products throughout the UK. PLASTIMUL is available for contractors and construction professionals undertaking foundation, retaining wall and below-ground waterproofing projects.

For product availability, pricing and quantities, contact our team:

Telephone: 01268 472358

Email: sales@clevershieldcoatings.co.uk

Important: Clever Shield Coatings UK supplies products only and does not design or specify waterproofing systems. Customers must establish product suitability for their intended application and follow the latest manufacturer's technical and safety documentation.