What goes with this?
Accessories and essentials for this job — add what you need.
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Ardex P51 Concentrated Primer & Bonding Agent – 1kg & 5kg
ARDEX’s own primer — check suitability for your substrate
From £18.99inc. VAT
Description
Ardex AM 100 is a grey, rapid setting, pre-blended sand and cement render for preparing walls ahead of tiling. Just add water for a slump-free mortar that can be applied from 2mm to 30mm in a single coat, and is ready to tile in as little as 2 hours. It's the trade answer where the drying time and build-up of a conventional sand and cement render simply won't fit the programme – ideal for fast-track wall tiling, dubbing out and render repairs in bathrooms, wetrooms, external areas and swimming pools.
Key Benefits
- Tiles can be fixed in as little as 2 hours at 20°C
- Apply 2–30mm in a single coat – no waiting between multiple coats
- Pre-blended – just add water for a consistent, slump-free mix
- Suitable for internal and external walls, including swimming pools and wet areas
- Can be wood floated 40 minutes to 1 hour after application
- Ready for Ardex WPC or S 7 Plus waterproofing after around 2 hours
- EMICODE EC1 Plus very low emission
Applications
Used by professional tilers, bathroom fitters, wetroom installers and builders to flatten, straighten and repair walls before tiling. Suitable for rendering properly prepared in-situ concrete walls, brickwork and blockwork, internally and externally, including swimming pools. Particularly useful on refurbishment and fast-track jobs where walls need to be rendered and tiled the same day.
Performance & Compatibility
- Apply a 1–2mm skim/bonding coat first, then build to the required thickness (up to 30mm) fresh-in-fresh
- For deeper sections over larger areas, apply in two layers with the top layer thinner than the first (e.g. 25mm then 5mm)
- Tile with a suitable Ardex cement-based tile adhesive such as Ardex X 7 R or X 77
- Compatible with Ardex WPC and Ardex S 7 Plus waterproof coatings
- Finish to SR1 as per BS 5385 when tiling
- Dense or weak backgrounds (glazed bricks, existing tiles, timber frame, old paint) and external work above first floor height require mechanically fixed reinforcement
Technical Specifications
- Product type: rapid setting one coat sand and cement tiling render
- Colour: Grey
- Pack size: 25kg paper sack with polyethylene liner
- Application thickness: 2–30mm in a single coat
- Mixing ratio: approx. 5 litres of clean water per 25kg bag (up to 5.5 litres for extra workability)
- Pot life: approx. 30 minutes at 20°C
- Ready to receive wall tiling: approx. 2 hours at 20°C
- Coverage: approx. 1.3kg per m² per mm – a 25kg bag covers approx. 3.2m² at 6mm
- Compressive strength: approx. 4 N/mm² (1 day), 7 N/mm² (7 days), 11 N/mm² (28 days)
- Tensile bending strength: approx. 1.5 N/mm² (1 day), 2 N/mm² (7 days), 3 N/mm² (28 days)
- Fresh mortar weight: approx. 1.6kg/litre
- Application temperature: above 5°C
- Shelf life: 12 months from date on packaging, unopened, stored cool and dry
What's Included
1 x 25kg bag of Ardex AM 100 Rapid Setting One Coat Tiling Render (Grey).
FAQs
What is Ardex AM 100 used for?
It's a rapid setting sand and cement render for flattening, building out and repairing walls before tiling, where a traditional render would take too long to dry.
How soon can I tile onto Ardex AM 100?
Typically after around 2 hours at 20°C using a suitable Ardex cement-based tile adhesive. Lower temperatures lengthen this, higher temperatures shorten it.
How thick can it be applied?
From 2mm up to 30mm in a single coat. Apply a 1–2mm bonding coat first, then build up to full depth while it's still fresh.
What surfaces can it be applied to?
Properly prepared in-situ concrete walls, brickwork and blockwork. Surfaces must be clean, sound and free of dust, paint, gypsum plaster and anything else that could affect adhesion.
Can it be used outside and in swimming pools?
Yes. It's suitable for internal and external areas, including swimming pools. Reinforcement is required for external work above first floor height.
How much water do I add?
Approximately 5 litres of clean water per 25kg bag, with up to a further 0.5 litres if a more workable mix is preferred. Always add the powder to the water.
How far does a 25kg bag go?
Around 3.2m² at 6mm thick, based on approximately 1.3kg per m² per mm of thickness.