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Serving Bernalillo County

Roof Snow Load Check in Albuquerque, NM

Checking the snow load a roof is designed for in Albuquerque, with the City of Albuquerque as the source of the number.

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  • Roof repair and full replacement
  • Leaks, hail and storm damage
  • Flat and pitched roofs

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Snow Load Check

Roof Snow Load Check: what it covers

Quick answer

Snow load is the weight a roof must carry, and in Albuquerque the City sets the minimum ground snow load by elevation. A roofer confirms the figure for the address, checks the framing against it and records the answer before a replacement is designed.

Roof Snow Load Check illustration for Albuquerque, NM

The snow load is the question homeowners ask least and regret most. A roof that was framed for a lighter load than the one now required will show its strain as sagging rafters, cracked sheathing or a ridge that drops, and none of this is visible from the ground. A check before a replacement is the only time the question is cheap to answer.

In Albuquerque the answer is set by the city. The FACTS sheet records that the City sets its own minimum ground snow load by elevation through the Albuquerque Building Safety Division, that a third-party guide says the value can exceed the national map baseline, and that no official numeric value was confirmed for this site. This page therefore explains the method and does not quote a figure.

What follows is how the check is done, what the roofer looks at in the framing, and what to ask the city. Any number the roofer gives you should come with its source, and the source is the City.

Service area
Albuquerque & Bernalillo County
Availability
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Warning signs

Signs you need roof snow load check

Do not walk on an attic floor that is not a designed walkway, and do not stand under a sagging deck. If a ceiling is dropping or a beam is visibly bent, keep clear and call the line.

  • Ridges or rafters that have dipped or bowed along their length
  • Cracked sheathing or a split board where two sheets meet across a long span
  • Doors or windows that have started to stick at the top after a heavy winter
  • A flat roof with ponding that has deepened over several seasons, which adds load
  • Visible sag in the deck seen from the attic as a dip between two supports
  • Old framing that was sized for a lighter load than the current code requires
Our process

How our roof snow load check visit works

  1. Confirm the value with the City

    The roofer or the homeowner asks the City of Albuquerque's Building Safety Division for the ground snow load that applies at the address, and records the reply, the date and the name of the person who gave it.

  2. Read the framing in the attic

    The roofer measures rafter and joist sizes, spacing and span, and notes the species and grade where visible. These are the figures the load is checked against.

  3. Check the existing deck and supports

    The decking is tested for deflection and the supports for bearing. Any dip, crack or split is photographed and recorded with its location.

  4. Compare the framing with the load

    The roofer or an engineer compares the framing with the load the City gives. Where the framing is short, the scope says so and the strengthening is quoted as a separate line.

  5. Record the answer before the covering is ordered

    The written answer, with the City's figure and the framing findings, goes into the file before the replacement materials are ordered, so the design rests on a recorded number.

Who sets the snow load for a roof in Albuquerque?

The City of Albuquerque, through its Building Safety Division. The figure depends on the elevation of the address, and the roofer confirms it with the City.

The FACTS sheet is specific on this point. The City sets its own minimum ground snow load through the Building Safety Division, the value is elevation based, and the source that describes it says it can exceed the ASCE 7-16 map baseline. This is a City rule, and a national map is not a substitute for the City's number.

The check starts with the address. Two addresses a few miles apart can sit at different elevations, which means the City's figure may differ between them. Give the roofer the street address so the value is taken for the right place.

  • Give the address to the City, not just the town name
  • Ask for the figure in writing with its date
  • Keep the reply with the roof records

What is the difference between ground snow load and roof load?

The ground snow load is the City's figure for the ground. The roof snow load is derived from it using the roof's shape, exposure and slope, and the roofer or engineer does that step.

A ground figure is not the load on the roof. The roof load is worked out from the ground value and from factors that depend on the roof's shape, how exposed it is to wind and how steep its slope is. A flat roof and a steep pitched roof can carry different loads from the same ground value, and that difference is part of the calculation.

The roofer does not need to do the whole calculation to know what to ask. Ask whether the figure given is ground or roof load, and ask for the factors used to get from one to the other.

  • Ask whether the figure is ground or roof load
  • Ask for the factors used in the conversion
  • Note the roof's slope and exposure for the calculation

What does a check cost and how long does it take?

The check is quoted as part of the replacement scope or as a separate survey. The time depends on access to the attic and on whether an engineer is needed.

Most checks are done during a roof inspection and add little time when the attic is accessible. An engineer's review takes longer and is quoted separately, with the scope stated before it is commissioned. No price is printed on this page; the roofer confirms the cost in writing before any survey is booked.

A check that finds the framing is adequate is a quick result and a useful one. A check that finds the framing is short is also useful, because it is the point at which the replacement can be designed correctly from the start.

  • Ask whether the check is part of the inspection or a separate line
  • Ask who will sign the calculation if one is needed
  • Keep the written result with the replacement contract

What should a homeowner do if the framing is short?

Do not cover the roof until the strengthening is designed and agreed. The roofer shows what needs to change and quotes it as a separate line.

Short framing can usually be strengthened, but the strengthening has to be designed for the load and checked by the roofer or engineer. A roof that is re-covered without that step carries a risk that the homeowner cannot see from inside the house. Ask for the design in writing before work begins.

Where the framing is found to be short, the roofer says so in the record, names the areas affected, and explains the options. That record is also useful if the house is sold or if an insurer later asks about the roof's condition.

  • Strengthening designed for the stated load
  • Each affected area named in the record
  • The options written out before any work starts
Options

Types and options for roof snow load check

Desk check against the City's figure

The quickest form of the check, using the City's value and the framing measurements taken in the attic. Used when the framing is clearly adequate.

Attic survey with deflection notes

A measured survey of the framing and deck, with photographs of any sag. Used when the house is older or when the framing is visibly strained.

Engineer's review

Where the framing is short or the design is unclear, a qualified engineer is brought in to check the calculation. The roofer names this step when it is needed.

Bernalillo County

Why roof snow load check is different in Greater Albuquerque

The City of Albuquerque sets the snow load. The value was not confirmed for this site, so the page quotes none.

Outlying towns, including Corrales, Placitas and the Sandia foothill communities, sit at different elevations from the city centre. The City's value applies to the City, and the roofer checks which jurisdiction governs the address.

A roof check in the county may be governed by a different office, and the roofer will name it when the address is known.

Skip the guesswork. Call for a straight answer.

Tell us what's happening and we'll tell you honestly whether it's a quick fix, and what roof snow load check should cost.

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Where we work

Roof Snow Load Check across Bernalillo County

Not sure if you're covered? Check your ZIP code.

Related

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Replacing a whole roof in Albuquerque and the towns around it, from the tear-off to the final flashing, quoted line by line on site.

Roof Permit and License Check

Confirming the roofing license and the permit for a job in Albuquerque, with the two offices that answer each question.

Flat and Low-Slope Roof Repair

Repairs to flat and low-slope roofs in Albuquerque and the towns around it, starting with where the water sits and why.

Guides

Read before you book

FAQ

Roof Snow Load Check FAQs

Is there a snow load number on this website?

No. The City sets the value, and this page does not state a figure because the one available to the site was not confirmed. Ask the City of Albuquerque's Building Safety Division for the value for your address.

Does the snow load matter for a flat roof?

Yes. A flat roof has to carry the load on its whole surface, and ponding adds to the load. The check covers both.

Can the roof be strengthened after the covering is on?

It is easier before. Strengthening after the covering is on means removing it, which adds cost. Settle the design before the replacement is booked.

Who pays for a snow load check?

The check is quoted by the roofer. Whether it is part of the job or a separate line is stated in the written scope.

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