A property under contract runs on a deadline. Roof work has to fit inside the diligence window, so it pays to plan it before the clock starts. The inspection itself is quick; the scheduling, the access and the report writing are not, and those are what run out of time.
The sequence below sets out what belongs at each stage, and what it costs you to leave a step until later. Almost every roof problem discovered after closing was visible before it, and was simply not looked for in time.
Before the offer
Review aerial imagery, roof age, permits and any seller disclosures. Note the roof types and rough areas so the inspection can be scoped quickly.
None of that requires access, and all of it is worth doing before you commit. Aerial imagery shows the roof sections, the equipment load and often visible ponding or patching. Permit records show what work has been declared, and their absence can be as informative as their content. Building age gives you a first view of whether the roof is likely to be near the end of its life during your hold.
The output of this stage is a scoped, priced inspection ready to be booked the day access opens, along with a list of the documents you will ask the seller for.
Inside the diligence window
Book the roof inspection as soon as access is granted. Ask for core samples, a layer count, a moisture survey and an equipment count. Allow time for the written report before your contingency deadline.
Work backwards from the contingency date, not forwards from today.
| Step | Why the timing matters |
|---|---|
| Book on day one of access | Specialist scheduling, not the inspection, is the bottleneck |
| Confirm invasive testing is permitted | Core sampling may need explicit consent under the contract |
| Field work | Moisture scanning often depends on weather and time of day |
| Report writing | The report is the deliverable, and it lands days after the visit |
| Review and decide | Leave room to ask questions and to price the findings |
If the window will not accommodate the work, raise it early. An extension requested in week one, tied to a named test, is a routine conversation. The same request in the final days is not.
What to ask for on the first visit
- Core samples at agreed locations, with the layer count and deck condition recorded
- A moisture survey, or a targeted survey of the highest risk sections if time is short
- A count of rooftop units, curbs and penetrations, since each one is flashing work in a future replacement
- An access review covering how debris and materials would move on and off the site
- Photographs located on a roof plan, not a folder of unlabeled images
- A written remaining life range with the reasoning behind it
Everything on that list can be gathered in one visit if it is requested at booking. Adding items afterwards means a second mobilization, and a second mobilization rarely fits the window.
At negotiation
Use documented findings, with photos and cost ranges, to support a price adjustment, a seller repair, or a credit at closing. Findings backed by core samples are harder to dispute than opinions.
The strength of a position comes from its specificity. A claim that the roof is old invites an argument. A photographed core showing two existing layers, a moisture map showing the extent of wet insulation, and budget pricing on a defined scope describe a cost, and a cost can be allocated between the parties. Read the red flags before you decide what to ask for.
After closing
Register warranties in the new owner’s name where transferable, start a maintenance program, and place the roof in your capital plan.
Do all three in the first quarter of ownership. Warranty transfer windows expire, maintenance programs are easiest to establish before a problem forces the issue, and the diligence findings are the best capital plan input you will ever have. Six months later the report is filed and the detail is gone.
Portfolio acquisitions
For several buildings, inspect in one format and one schedule so results compare cleanly. Tell us the number of locations when you contact us.
Prioritize within the portfolio rather than treating every roof alike. Full testing belongs on the roofs that are old, large or over valuable space; a visual inspection is enough on roofs with clear life left. That allocation gets the diligence done inside the window without spending the same money on every building.
Start with the three red flags, or read what the condition assessment should cover.
Common questions
Can the roof be inspected before the property is under contract?
Physical access almost never happens before a contract exists, because a seller has no reason to admit consultants for a party with no commitment. The desktop work can be done in advance.
- Aerial imagery, county permit records, building age and previous listing material
- It gives you roof area, section count, equipment load and often the age of the covering
- Enough to scope an inspection and have it priced before you need it
- Off market sellers who want speed sometimes grant limited access early
- Portfolio sellers occasionally provide existing condition reports during marketing
Read a seller's report, but treat it as the seller's information rather than your diligence, and plan your own inspection regardless. When access opens, the booking is already made rather than beginning from scratch.
What should the purchase agreement say about roof access for testing?
It should give the buyer the right to conduct non invasive and invasive testing during the inspection period, with core sampling named explicitly, subject to the buyer repairing the openings and carrying insurance.
- Silence on invasive testing lets a seller refuse cores under a generic clause
- Without cores the two most expensive variables on the roof stay unknown
- Notice periods short enough to fit inside the inspection window
- Tenant access provisions where reaching the roof means crossing leased space
- A stated repair standard for any core opening, which protects both parties
If the seller resists invasive testing entirely, treat that as information. It may be caution, or it may be knowledge. Either way you are underwriting a roof you were not allowed to open, and the price should reflect the uncertainty you have been asked to carry.
What happens if the diligence window is too short for a moisture survey?
You have three options and they are not equally good: extend the inspection period for the roof alone, survey the highest risk sections rather than the whole roof, or price the uncertainty into the deal. Closing anyway is the expensive default.
- A targeted survey is the most useful compromise
- Sections chosen from the visual inspection and the interior leak history
- It still answers whether wet insulation exists and roughly how widespread it is
- Pricing the uncertainty means a reduction, an escrow or a retained contingency
Extensions are easier to obtain than buyers expect when the request is specific, time limited and tied to a named test. Ask for the days you actually need and say what you will do with them. A vague request for more time reads as hesitation about the deal.
Should a roof issue be handled with a price cut, an escrow or a seller repair?
Match the mechanism to the certainty. A reduction suits a replacement you have scoped and priced, an escrow suits a cost that is real but not yet fixed, and a seller repair suits discrete work you can verify before closing.
- A reduction is clean but final, so it fails you if the number was optimistic
- An escrow is worth only its release conditions, and vague ones become disputes
- A seller repair leaves execution with the party leaving the building
- Agree the specification, the contractor and the sign off standard in advance
The worst outcome is a seller repair on work you cannot inspect before you own it. Whichever route is taken, insist the underlying work is documented. Photographs of the opened roof, the materials used and the manufacturer paperwork keep a warranty alive, and a future buyer will ask you for them.
Does a roof warranty transfer to the buyer at closing?
Sometimes, and never automatically. Many manufacturer warranties are transferable once, within a set period after the sale, on written application and often for a fee.
- The manufacturer may require an inspection before it agrees to transfer at all
- Contractor workmanship warranties are frequently not transferable
- A workmanship warranty is worth nothing if the contractor has ceased trading
- The transfer window can be short and it starts running at completion
Get the certificate, the procedure and the fee during diligence, and find out whether remedial work is a condition of approval, because deferred repairs can become the price of keeping the cover. Verify it is still live: undocumented repairs, an unauthorized contractor, unreported leaks and missed inspections all void cover while the certificate still looks valid.