DIY
Calculate Roof Snow Load (PSF)
Calculate snow weight on your roof by depth and snow type. Know when to clear snow to prevent collapse.
In this article
India
Relevant: Kashmir, Himachal, Uttarakhand, Ladakh, Sikkim। Fresh snow: 50-150 kg/m³। Ice: 900 kg/m³। IS 875 (Part 4): Indian snow load standard। Steep roofs: snow slides off. Flat roofs: accumulation risk。
Safety
Creaking sounds, door jamming: remove snow immediately (professional help — fall risk!)。
⚡ CalcWolf Insight
The most dangerous time for roof collapse is not during the snowstorm — it is 2-3 days after, when warm temperatures partially melt snow into dense, heavy slush. Snow that seemed manageable at 15 PSF can become 25+ PSF as it compacts and absorbs meltwater.
Frequently asked questions
When dangerous?▾
Creaking, doors jamming, visible sagging = immediate action。
Indian standard?▾
IS 875 Part 4. Zone-based design for hill areas。
✓ Math logic verified against primary sources
→ See our verification process
