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Snow cover lasts 4–5 months in the Leningrad Region. With normative load 180 kg/m² a 100 m² roof can hold 18 tonnes of snow. Avalanching off smooth metal roofing rips gutters, damages cars and entries, hurts people.
SP 17.13330.2017 requires snow guards on roofs steeper than 5° in zones from 120 kg/m². The Leningrad Region (180 kg/m²) clearly applies. Legally: if snow from your roof damages a neighbour or injures someone, you bear full responsibility (Art. 1064 of the Civil Code).
Tubular — most common and universal. Two steel tubes (25–32 mm) on brackets, 150–200 mm tall. Releases snow in portions, killing avalanche energy.
Grid — steel grid 150–200 mm. Holds snow and small ice fully. For long slopes. 30–50% pricier than tubular.
Angle (plate) — triangular plates 40–60 mm. Cheapest, weakest. Only for slopes ≤30° and ≤4 m. Not recommended as primary in the region.
Bugel (point) — small metal/plastic pieces in chequer pattern. For shingles, fitted during install.
Parameter | Tubular | Grid | Angle | Bugel |
|---|---|---|---|---|
Roof type | Any | Any | Metal tile | Shingles |
Pitch | Up to 60° | Up to 60° | Up to 30° | Up to 55° |
Slope length | Up to 10 m | Up to 12 m | Up to 4 m | Up to 8 m |
Snow load | Up to 300 kg/m² | Up to 350 kg/m² | Up to 100 kg/m² | Auxiliary |
Reliability | High | Very high | Low | Medium |
Price/lin.m installed | 800–1 500 ₽ | 1 200–2 200 ₽ | 300–500 ₽ | 150–300 ₽/pc |
Above doors and porches
Above parking spots
Above pedestrian paths
Above lower slopes (multi-level roofs)
Above dormer windows
Above balconies and terraces
Distance from eave: 350–500 mm from the eave overhang, never at the very edge — fix point should be on/near the load wall to transfer load there, not to the overhang.
Bracket spacing: zone III, 30° pitch, 6 m slope — max 800 mm; 8 m slope — max 600 mm; 10 m slope — second row required.
Fixing: 70–100 mm screws into battens (not into the roofing!), with rubber gaskets. On metal tile — into the lower wave.
Formula: Q = L × sin(α) × S. Example: 6 m slope, 35°: Q = 6 × 0.574 × 180 = 619 kg/lin.m. One tubular guard holds up to 300 kg/lin.m at 800 mm spacing — so two rows are needed. Slopes >5 m at >30° almost always need a second row. Row spacing 2.5–3.5 m.
Consequence | Repair cost |
|---|---|
Gutter system torn off | 150 000–250 000 ₽ |
Car damage | 100 000–500 000 ₽ |
Porch canopy destroyed | 50 000–120 000 ₽ |
Lower slope damaged | 80 000–200 000 ₽ |
Personal injury | Criminal liability + compensation |
Landscape, fence | 30 000–100 000 ₽ |
Compare to the cost of guards around a 10×10 m house: 25 000–60 000 ₽ (tubular, one row, ~30 lin.m). The math is obvious.
Type | Material, ₽/lin.m | Install, ₽/lin.m | Total, ₽/lin.m |
|---|---|---|---|
Tubular (galv + polymer) | 500–800 | 350–500 | 850–1 300 |
Tubular (premium, Grand Line) | 800–1 200 | 350–500 | 1 150–1 700 |
Grid | 900–1 500 | 400–600 | 1 300–2 100 |
Angle | 150–250 | 150–250 | 300–500 |
Bugel (per pc) | 80–180 | 70–120 | 150–300 |
StroyInvest24 calculates, supplies and installs snow guards for your roof, slopes and the regional snow load.
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