Isokern Light Expanded Clay Aggregate Calculator

Discover the easiest way to plan your chimney insulation with the Isokern Leca Calculator. This user-friendly tool calculates exactly how many 50L bags of Leca insulation you need, based on your flue liner size and chimney dimensions. Simply select your Isokern flue liner diameter (e.g., 150mm-210mm), enter your chimney void width, length, and height, and get instant results. Plus, it checks for the required 15mm insulation thickness, ensuring safety and efficiency. Save time, avoid guesswork, and keep your home warm—try the Leca Calculator today!