Roof Inspections in Snow or Winter Conditions

18 January 2024

Snow and winter conditions can conceal roof surfaces and make access unsafe. A report should identify those limits instead of implying that every detail was available for review.

A practical approach

Ask what was visible from safe locations and which questions remain unanswered. Review existing roof records and interior evidence without assuming they replace a later exterior assessment. If further checking is needed, agree its scope for suitable conditions. Do not remove snow or climb onto the roof to accelerate the process.

Weather is part of the inspection context

Rain, snow, heat and recent dry weather can affect what is visible and which equipment can be operated appropriately. A dry basement on one afternoon does not establish that it never receives water. Snow may conceal roof surfaces or ground conditions. The report should explain significant limitations rather than treat a single visit as a complete history of the building.

Use weather context to plan follow-up, not to jump to conclusions. Ask for records of prior leaks, repairs and seasonal servicing. If a concern appears only during certain conditions, provide a dated description and photographs taken safely from accessible areas. Equipment should not be operated outside its suitable conditions simply to complete a checklist. Manufacturer guidance and the inspector's judgment matter more than forcing every possible test into one appointment.

Evaluate the roof without unsafe access

Roof observations depend on visibility, weather, pitch, access and the agreed inspection method. An inspector may use ground views or other suitable methods when walking the surface would be unsafe or damaging. No homeowner should climb onto a roof simply to confirm a report photograph. Ask which areas were visible and which details could not be evaluated.

A roof review is more than a search for missing pieces. Changes in roof direction, penetrations and junctions with walls can help organize questions about water management. Interior stains may be relevant, but their cause should not be assumed from location alone. A roofing professional may need to investigate concealed details or prepare a repair proposal. Record the inspection method and limitations alongside the findings so later decisions are based on what was actually observed.

Close the loop on an unresolved finding

An unresolved item should have a next action, a responsible person and a clear record of what information is missing. Otherwise it can disappear between the inspector, contractor, seller and buyer. A short follow-up log is often enough: original observation, question asked, response received and any remaining limitation.

Do not change the original report to make it match later work. Keep subsequent documents beside it so the sequence remains understandable. If a professional reaches a different conclusion, ask for the evidence and scope behind that conclusion. Differences can reflect new access or information rather than an error. The important point is to preserve a traceable explanation of how the concern was investigated and what was actually resolved.

An example to work through

A covered roof may allow observation of some edges or penetrations while hiding large areas of the covering. The later follow-up should target the concealed areas rather than repeat unrelated interior checks.

What to check

Record concealed roof areas.
Keep interior and historical evidence in context.
Plan safe follow-up in suitable conditions.

Sources and further guidance

ASHI: home inspection scope and standards