What products can be used to level over underfloor heating systems?
Levelling over underfloor heating requires products that combine high flow, strength, flexibility, and reliable drying performance.
BAL provides multiple solutions engineered specifically for heated screeds and undertile electrical heating systems. Below is a concise guide to selecting the right BAL levelling compound based on project requirements:
What products provide high flow?
BAL Level Plus, when used with BAL Level Plus Liquid Latex, provides a high performance, two part levelling system designed for both cementitious heated screeds and electric heating mats.
Key Benefits
- Super-smooth, high flow formulation for effortless application
- Rapid-setting – tile after 2–3 hours
- Long 15 minute wet edge, allowing easier working time
- Suitable thickness: 2–10mm
- Protein free and moisture tolerant, ensuring compatibility with sensitive substrates
- Can be spike rolled to release trapped air
Mixing & Preparation
- Two part system with no water measuring required—simply combine the latex liquid and powder.
- Priming only required on very porous substrates.
Ideal for installers needing a fast track, smooth finish directly over underfloor heating.
What levelling compounds can be used at thicker bed depths, and tiled the same day?
When deeper levelling is required, BAL Level Max provides exceptional strength and versatility.
Key Features
- Bed depth range: 2mm to 80mm
- Fibre Strand Technology (FST) for enhanced strength and flexural performance
- Self-smoothing and self-healing, ensuring an even finish
- Foot traffic: after 3 hours
- Ready to tile: after 4 hours, regardless of application depth
- Pumpable, with excellent flow for large areas
- Protein-free formulation
- No spike rolling needed
Mixing & Priming
- Mix each 25kg bag with 5.25 litres of clean water.
- On cementitious heated screeds, prime using BAL Prime APD diluted 1:1 before application.
Choose Level Max when you need a robust leveller capable of handling deep fills and delivering rapid turnaround over heated screeds.
What fast-setting levellers can be used over underfloor heating?
For projects where speed is critical, BAL Level Fast delivers exceptional rapid-setting performance.
Performance Highlights
- Walkable in just 30 minutes
- Tile after only 45 minutes
- Use from 2mm to 30mm, and from 3mm over timber substrates
- Fibre Strand Technology for added flexibility and strength
- No spike rolling required, saving time onsite
- 10 minute bucket life and 10 minute wet edge, providing better working efficiency
- One pour technology, usable over concrete, sand:cement screeds, tile backer boards, and underfloor heating systems
Level Fast is the ideal solution when accelerated completion is the priority.
Choosing the Right BAL Levelling Product
| Requirement | Recommended Product |
|---|---|
| High-flow levelling over heated screeds | BAL Level Plus |
| Deep bed levelling (up to 80mm) | BAL Level Max |
| Fastest turnaround for heated floors | BAL Level Fast |
| No-water-measure mixing | BAL Level Plus (with latex liquid) |
| Pumpable solution | BAL Level Max |
