How to Use a Roof Rake for Snow Removal
How to Use a Roof Rake for Snow Removal
A roof rake is a long-handled tool designed to pull snow off the edges of your roof while you stand safely on the ground. In cold-climate regions, roof rakes are essential equipment for preventing ice dams, reducing dangerous snow loads, and protecting gutters from the weight of accumulated snow and ice.
What Is a Roof Rake
A roof rake is not a garden rake. It consists of a wide, flat blade (typically 18 to 24 inches wide) attached to an extendable handle that reaches 16 to 24 feet when fully assembled. The blade is designed to slide along the roof surface and pull snow downward without damaging shingles or other roofing materials.
Types of roof rakes:
- Standard blade rakes -- a flat aluminum or plastic blade that scrapes snow off the surface. Simple and affordable ($30 to $80).
- Slide-style rakes -- a flat panel that slides under the snow and lets it glide off the roof on a slippery surface. Gentler on shingles and easier to use ($50 to $120).
- Wheeled rakes -- include small wheels or rollers that hold the blade above the shingle surface, preventing scratching. Best for delicate roofing materials.
- Telescoping models -- extend in sections, some reaching over 20 feet. Essential for two-story homes.
Why Snow Removal Matters
Preventing Ice Dams
Ice dams form when heat escaping through the attic melts snow on the upper roof. The meltwater flows down to the cold eaves, refreezes, and creates a dam of ice. Water pools behind this dam and backs up under shingles, causing leaks, water damage, and mold. Keeping the first 3 to 4 feet from the eave clear of snow is the most effective way to prevent ice dams. See How to Prevent and Remove Ice Dams for a complete guide to ice dam prevention and removal.
Reducing Snow Load
Roofs are engineered for the snow loads typical in their region, but extreme storms can exceed design limits. Understanding the weight of snow on your roof is critical:
- Fresh, fluffy snow: 1 to 5 lbs per square foot per foot of depth
- Settled or packed snow: 5 to 15 lbs per square foot per foot of depth
- Ice or ice-saturated snow: 15 to 25+ lbs per square foot per foot of depth
A foot of heavy, wet snow on a 1,500 square foot roof can add 15,000 to 22,000 pounds of load. When you see doors sticking, hear creaking or popping sounds, or notice visible sagging of the roof line, the snow load may be approaching dangerous levels. See Roof Structure for information on load-bearing capacity.
Protecting Gutters
Snow and ice sliding off the roof or accumulating at the eaves can crush, bend, or tear gutters from the fascia. Keeping the eave area clear prevents gutter damage that leads to drainage problems. See Roof Drainage and How to Clean Gutters Safely for related maintenance.
When to Rake
- After 6 or more inches of snowfall -- especially wet, heavy snow
- When ice dams begin forming -- visible ridges of ice at the eaves
- When multiple storms stack up without melting between them
- When the forecast calls for rain-on-snow -- rain adds massive weight to existing snowpack
- When you notice warning signs of excessive load: sagging roof line, cracking sounds, jammed doors or windows
You do not need to rake after every light dusting. Light, dry snow weighs very little and often blows off on its own.
Safety Rules
Roof raking is done entirely from the ground. This is not optional -- it is the fundamental safety requirement. Never climb a ladder or walk on a snow-covered roof to rake snow.
- Stand well back from the eave. Snow, ice chunks, and icicles will cascade off the roof toward you. Position yourself at least 6 to 8 feet from the building and work at an angle.
- Watch above you. Dislodged snow from higher on the roof can slide down in a sudden rush.
- Clear the landing zone. Remove vehicles, pets, furniture, and anything breakable from the area below the roof edge before you begin.
- Keep children and bystanders away. Falling snow can weigh hundreds of pounds and buries anything in its path.
- Watch for overhead power lines. Roof rakes are long, conductive, and you are waving them near the roofline. Stay well clear of any electrical service lines.
- Dress for the work. Wear a hard hat or winter hat, safety glasses, waterproof boots with traction, and layered clothing. The work generates significant exertion.
Technique
Step 1: Position Yourself
Stand on cleared ground at the side of the house, angled so falling snow will land beside you rather than on top of you. Never stand directly below the area you are raking.
Step 2: Start at the Edge
Place the rake blade on the roof surface at the eave edge. Pull downward in smooth, steady strokes to slide snow off the edge.
Step 3: Work Up Gradually
After clearing the first few feet, reposition the blade higher and pull snow down in overlapping strokes. Your goal is to clear the first 3 to 4 feet from the eave on each slope. This is the ice dam zone -- the area where meltwater refreezes.
Step 4: Do Not Try to Clear the Entire Roof
Removing all snow from the entire roof is unnecessary and often impossible with a ground-based tool. Focus on the eave area. The upper portions of the roof are less prone to ice dams and are warmed by the attic below, which promotes even melting.
Step 5: Be Gentle
Let the rake blade glide across the shingle surface. Do not dig, scrape, or chop. You do not need to remove every last bit of snow -- leaving a thin layer (an inch or so) is fine and protects shingles from abrasion.
Step 6: Work All Vulnerable Eaves
Prioritize north-facing eaves (slowest to melt), eaves above heated living spaces, and eaves that have a history of ice dams.
What NOT to Do
- Never climb onto a snowy or icy roof. This is the leading cause of winter roofing injuries and fatalities. No amount of snow removal is worth a fall.
- Never chip at ice dams with a hammer, chisel, or axe. You will damage shingles, crack flashing, and risk puncturing the Roof Deck. See How to Prevent and Remove Ice Dams for safe ice dam removal methods.
- Never apply rock salt (sodium chloride) directly on the roof. Rock salt corrodes metal flashing, stains shingles, and damages vegetation below. Use calcium chloride if chemical melting is needed.
- Never use a pressure washer or heat gun on ice. These cause more damage than they prevent.
- Never pull snow from a steep roof toward a sidewalk or driveway without blocking off the area. Sudden avalanches of roof snow are a serious hazard to pedestrians.
Choosing a Roof Rake
Consider these factors when selecting a roof rake:
- Handle length -- measure the eave height of your home. A two-story house with eaves at 18 to 20 feet needs a rake with at least 20 feet of reach.
- Blade width -- wider blades (24 inches) clear more snow per stroke but are heavier to maneuver. Narrower blades (16 to 18 inches) are easier to handle.
- Weight -- fully extended, a roof rake is heavy and awkward. Lightweight aluminum handles reduce fatigue.
- Blade material -- plastic or coated aluminum blades are less likely to damage shingles than bare metal.
- Slide or scrape style -- slide-style rakes are gentler on roofing materials and are worth the extra cost for homeowners with architectural shingles or other premium roofing.
Seasonal Storage and Maintenance
Store your roof rake in a dry location during the off-season. Check the handle connections for looseness before each winter. Replace worn or bent blades. Keep it accessible -- you will need it when the storm hits, not after spending 20 minutes digging it out of the back of the garage.
Add roof raking to your Roof Maintenance Seasonal Checklist and prepare for the season with your Fall Roof Winterization Guide tasks.
