Product Details
ARDEX AR 300 Multimörtel
Multipurpose Repair and Adhesive Mortar
- For filling gaps from 2mm to 30mm on walls and floors
- Fills non-structural holes, cracks, and fractures
- Bonds stones such as limestone and aerated concrete
- Ensures quick adhesion of ceramics and tiles, allowing for fast foot traffic
- Fast drying
- Low shrinkage
- Resistant to water and weather conditions
- Easy application
- Achieve the desired final surface finish with a sponge or steel trowel
ARDEX AR 300 – Multipurpose Repair and Adhesive Mortar
ARDEX AR 300 is a versatile repair and adhesive mortar suitable for both indoor and outdoor use on walls and floors. It fills gaps from 2mm to 30mm, bonds materials like cement and gypsum boards, and ensures quick adhesion of ceramics and tiles. With fast drying, low shrinkage, and resistance to water and weather conditions, ARDEX AR 300 is ideal for a variety of applications, including high-traffic areas and wet environments.
Description
Gray powder made from special cements, well dispersing plastics and selected filler materials. The powder is stirred with water to form a smooth, firm mortar, that can easily be applied in thick and thin layers and hardens after approx. 60 minutes. Dry layers are vapor permeable.
Use
Indoors and outdoors. Walls and floors.
Bedding of mineral construction panels, gypsum plasterboards, hard foam insulating panels with mortar lamination and similar.
Leveling, smoothing and rendering of wall and floor surfaces made from
- concrete
- masonry (aerated concrete indoors only, in thin layers)
- plaster of mortar groups P II and III
- cement screed
in layer thicknesses of 2 – 30 mm for supporting tile and slab surfaces.
Filling of holes, recesses, slits and break-outs. Bonding of flat blocks made from aerated concrete and sand-lime bricks in statically non-relevant areas, such as separating bath tub and wash basin brickwork, shower partitions etc.
Bonding of tiles made from earthenware and stoneware with fast initial adhesion and readiness for foot traffic.
Considerations
Considerations Subsurfaces with different moisture contents can cause differences in color with cementitious jointing mortars. The leveling layers are to be protected from drying out too fast. Tile surfaces can be applied after approx. 2 hours. For laying moisture-sensitive natural stone surfaces the drying of the leveling layer is to be waited and a suitable adhesive mortar used. Seals with ARDEX sealing compounds can be carried out after the top surface is dry. The products of the ARDEX natural stone system are suitable for laying marble and other natural stones free of discoloration indoors.
ARDEX AR 300 can be used in swimming pools, but not in health spas, thermal baths or brine baths.
Packaging
25 kg kraft bag
Shelf Life and Storage
Can be stored for approximately 12 months in its original unopened packaging, protected from sunlight and frost, in a dry and cool environment.
Mixing Ratio
6.0 liters of water for 25 kg powder
Bulk Density
Approximately 1.30 kg/l
Fresh Mortar Density
Approximately 1.55 kg/l
Coverage
Depending on the surface condition and the trowel size used:
- For 3 x 3 x 3 mm trowel: 1.2 kg powder/m²
- For 6 x 6 x 6 mm trowel: 2.5 kg powder/m²
- For 8 x 8 x 8 mm trowel: 3.4 kg powder/m²
Working/Pot Life*
Approximately 45 – 60 minutes
Open Time*
Approximately 20 minutes
Adjustability Time*
Approximately 5 – 15 minutes
Walkable and Coatable Time
Can be walked on, coated, and grouted after approximately 2 hours.
*These are approximate values calculated in a laboratory environment at +20°C and 65% relative humidity. Environmental and weather conditions can affect these values. Higher temperatures and lower relative humidity shorten these times, while lower temperatures and higher relative humidity extend them.
Compressive strength
after 1 day approx. 3 N/mm²
after 7 days approx. 12 N/mm²
after 28 days approx. 18 N/mm²
Bending tensile strength
after 1 day approx. 1 N/mm²
after 7 days approx. 2 N/mm²
after 28 days approx. 4 N/mm²
Suitability for Underfloor Heatingv
Suitable
pH Value
Approximately 12
EMICODE
EC 1 – Very Low Emission
GHS/CLP Classification
GHS 05, Corrosive
Signal Word
Danger
GGVSEV/ADR Classification
None
GHS/CLP classification
GHS05 ‘corrosive’
GHS07 ‘irritating’
Signal word: danger
IMPORTANT NOTE
This Frequently Asked Questions (FAQ) section is prepared for general information purposes and does not constitute a definitive guide. For the most accurate and up-to-date information please refer to the product technical data sheets. For detailed information about product features, usage conditions, and application methods, we recommend consulting the ARDEX Turkey technical team. Before any application, obtaining expert advice on surface preparation and product selection will increase the success of the application.
How can I fill gaps and level surfaces efficiently?
ARDEX AR 300 is a versatile repair and adhesive mortar that fills gaps from 2mm to 30mm and levels surfaces efficiently on walls and floors, both indoors and outdoors.
What materials can be bonded with a multipurpose mortar?
ARDEX AR 300 can bond cement and gypsum boards, rigid foam panels, ceramics, tiles, concrete, plaster, and more, making it suitable for various substrates.
How does a fast-drying mortar enhance construction projects?
ARDEX AR 300 provides quick drying, low shrinkage, and resistance to water and weather conditions, ensuring durable and long-lasting results in high-traffic areas and wet environments.
How can I repair concrete defects effectively?
Using ARDEX AR 300 allows for effective repair of holes, cracks, and fractures in concrete, brick, plaster, and similar materials, without the need for structural repairs.
How do I choose the right mortar for my repair and adhesive needs?
When selecting a mortar, consider the type of substrate, environmental conditions, and the specific requirements of your project such as gap size and drying time. ARDEX AR 300 is versatile and suitable for both indoor and outdoor use on walls and floors, making it an ideal choice for various applications.
What materials can ARDEX AR 300 bond?
ARDEX AR 300 is designed to adhere to cement and gypsum boards, rigid foam panels, concrete, plaster, and cement-based screed. It is suitable for bonding ceramics, tiles, limestone, and aerated concrete, making it versatile for different substrates.
Is ARDEX AR 300 suitable for areas with heavy traffic?
Yes, ARDEX AR 300 is ideal for high-traffic areas due to its quick-drying, low shrinkage, and strong adhesion properties. It ensures durability and resistance to wear.
Can ARDEX AR 300 be used in wet conditions?
Absolutely, ARDEX AR 300 is water and weather-resistant, making it suitable for wet environments like bathrooms, showers, and external areas.
What is the working time for ARDEX AR 300?
The product offers a working time of approximately 45-60 minutes, with an open time of about 20 minutes and an adjustability time of approximately 5-15 minutes.
What is the mixing ratio for ARDEX AR 300?
For optimal consistency, mix 25 kg of powder with 6.0 liters of water.
How long after application can the surface be walked on or grouted?
The surface can be walked on, coated, and grouted approximately 2 hours after application.
What are the suitable substrates for ARDEX AR 300?
ARDEX AR 300 can be applied to concrete, plaster, cement-based screed, old tiles, ceramics, and cement and gypsum boards. It is also suitable for filling and leveling applications on these substrates.
What is the shelf life and storage conditions for ARDEX AR 300?
The product can be stored for approximately 12 months in its original unopened packaging, protected from sunlight and frost, in a dry and cool environment.
Why should I use ARDEX AR 300 instead of conventional repair mortars?
ARDEX AR 300 offers superior flexibility, quick adhesion, and resistance to water and weather conditions. It also minimizes shrinkage and provides strong bonding, ensuring a durable and professional finish for both repairs and adhesive applications.
Do you have any questions about this product?
You can ask your questions about this product by filling out our contact form.