Insulated lime render, correctly specified.
A specialist thermal lime render system suitable for internal and external use on traditional buildings where heritage-led specification is essential.
St Astier Novaskin is a thermal insulated lime render developed to improve comfort and reduce heat loss in solid-wall buildings without compromising breathability. It sits within the family of natural hydraulic lime systems and is compatible with traditional fabric when properly specified and applied.
Phoenix Stone specialises in the correct use of Novaskin — internally where insulation is needed without introducing modern sealed systems, and externally where thermal improvement is desirable on old walls. Preparation, keying, coat build-up and curing are as important as the product itself.
- Cold internal walls on a solid stone or brick building.
- Failed modern insulated systems causing damp and mould.
- A desire for thermal comfort without sealed, non-breathable finishes.
- A conservation-led specification calling for a breathable insulating render.
- Specialist experience with Novaskin systems on traditional Irish fabric.
- Coats built up to correct thickness for insulation performance.
- Compatible with lime finishing coats, limewash and mineral silicate paints.
- Fully breathable — the wall keeps working the way it was designed to.
Frequently asked.
Can Novaskin be used internally?+
Yes — Novaskin can be applied internally on solid walls to improve thermal comfort while maintaining breathability. Correct build-up and finishing coats are essential.
How does it compare to modern insulation?+
It does not seal the wall. Modern boards and foils often trap moisture in old fabric; Novaskin insulates while allowing moisture vapour to pass, protecting the wall long-term.
Is it suitable for listed buildings?+
When specified correctly and agreed with the relevant conservation officer, it is a strong candidate for many heritage improvement schemes.