Roofing

Sizing a Dumpster for a Roof Tear-Off in Roseville

Roofing is where sizing goes wrong most often, and it is always the same mistake: sizing by how the pile looks instead of what it weighs.

The one number that matters: squares

Roofers measure in squares. One square is 100 square feet of roof surface. A typical Roseville post-war ranch is somewhere between 16 and 24 squares; the larger colonials in Sterling Heights, Shelby and the Grosse Pointes can run past 35.

If you do not know your square count, your roofer does, and it is the first thing to ask. Everything downstream follows from it.

What a square of roofing weighs

Run the arithmetic. A 22 square architectural shingle roof at 350 lb per square is roughly 7,700 pounds — nearly four tons before underlayment. That is comfortably inside a 20 yard but leaves little headroom if decking comes off too.

Note the slate row. It is uncommon but it exists on the older substantial housing in the Grosse Pointes and parts of Mount Clemens, and at up to 1,500 lb per square it changes the answer entirely — slate goes in a small container, part-filled, never a 30 yard.

Shingle sizing table

The second layer problem

Plenty of older houses across this metro have a second layer of shingle laid over the original. It roughly doubles the tear-off weight, and people often do not know until the crew is up there.

Look at the rake edge from the ground, where a double layer often shows as a noticeably thicker band, and ask your roofer to confirm during the inspection. If it turns out on the day, call us — a swap mid-job is far cheaper than an overloaded container that cannot be hauled.

Ice dams and what they hide

This is the Michigan roofing problem and it changes tear-off sizing more than anything else.

Ice dams form when heat escaping through the roof melts the underside of the snowpack, the water runs down and refreezes at the cold eave, and the resulting ridge backs water up under the shingles. Inside, it shows as a ceiling stain. Outside, it has usually been soaking the decking and the insulation for weeks.

So on any roof being replaced because of ice dam damage, budget for more decking than you think and for wet insulation coming out too. Both are much heavier than their dry equivalents. We size those jobs up on volume and down on the weight allowance, and we say so before you book rather than after.

The narrow-driveway problem

Roofing containers need to sit close to the house, and in the inner-ring cities that is not always possible.

A 20 yard is twenty-two feet long and the truck needs roughly another ten feet of clear run behind it to roll it off. On a single-width 1950s Roseville or Eastpointe drive, with the house close to the lot line, that is genuinely tight.

Two options usually work. A 15 yard with a planned swap mid-tear-off, which costs a little more in movement but places comfortably. Or a 20 placed further down the drive with the crew walking material in, which is slower for them but cheaper for you. Tell us the driveway width and we will talk it through.

The short northern season

The practical roofing window here runs roughly from April to October. Asphalt shingles need warmth to seal properly, and nobody is tearing off a roof in January unless something has failed badly.

That compresses a year of roofing into about seven months and makes container demand spike from May onward. Spring is doubly busy because it is when ice dam damage from the winter gets discovered and acted on.

If you are a roofing contractor, a standing arrangement with a local hauler is worth more here than in a twelve-month climate. We hold capacity for contractors who work with us regularly, and we are honest during the crunch about what we can and cannot deliver.

Placement and site cleanup

• Tight to the drip line on the elevation being torn off, where the driveway allows.
• Doors facing the approach so ground crew can walk material in.
• Clear of overhead lines and mature trees. The truck bed needs roughly twenty-two feet of vertical clearance to tip.
• On boards, and on ground that will carry the weight — particularly in spring, when the frost is coming out.
• Below the rail, so the load can be hauled legally.

One thing that is not about the container: a tear-off sheds an enormous quantity of nails. A magnet sweep of the driveway, lawn and street at the end of the job is twenty minutes well spent, and it is the single most common complaint homeowners have about roofing work.