Baumit NHL Thermo – Lightweight Insulating Lime Render
Baumit NHL Thermo is a natural white insulating lime render formulated with lightweight mineral aggregates to reduce thermal conductivity while maintaining excellent breathability. Suitable as a base coat on masonry, stone, brick and compatible insulation boards, it is ideal for renovation, conservation work and energy‑improved lime systems.
Lightweight natural hydraulic lime (NHL) base coat render for internal and external use, designed to provide improved thermal performance and high vapour permeability.
Its open‑pore structure helps regulate internal humidity, making it well suited to traditional buildings, moisture‑sensitive substrates and areas requiring enhanced thermal comfort. NHL Thermo can be finished with Baumit lime top coats or fine finishing plasters as part of the Baumit Klima and ecological building range.
- Lightweight insulating NHL lime render
- Suitable for internal and external applications
- High vapour permeability for healthy building fabric
- Ideal for renovation, conservation and energy‑improved lime systems
Product Details
- Packaging: 25 kg bag Shelf life: 12 months
- Consumption: approx. 4.0–5.0 kg/m² per 10 mm
- Yield: approx. 1.5–1.8 m²/bag at 10 mm
- Water demand: approx. 6.0–7.0 litres per 25 kg
- Thermal conductivity (λ): approx. 0.11 W/mK
- Max. grain size: 0–2.0 mm




