Royal Dane Roofing · Salt Lake City, UT · From the roof

What to Look at on the Roof Before You Buy a Postwar House

I get called out to a lot of houses about a week after somebody closes on them, and the pattern is always the same. The listing said new roof. The buyer took that at face value, and now there is a stain over the back bedroom in the first hard week of weather. Nobody lied to them exactly. They just never asked the one question that would have told them what they were getting.

South Salt Lake runs to postwar ramblers, small brick bungalows, and a growing run of new townhomes, which means most of the roofs I climb here have been through several owners and at least a couple of roofing companies. That history is not written anywhere on the shingles. It is written in the paperwork, in the attic, and in a handful of details you can check yourself on a walkthrough.

I am not a home inspector and this is not a substitute for one. What I can give you is the roofer’s version of that walkthrough, which is narrower and, on the specific question of the roof, usually sharper.

What a Seller’s New Roof Actually Has to Prove

New roof means nothing on its own. It could mean a full tear-off to bare decking with new underlayment, flashings, boots and a manufacturer warranty in the file. It could also mean somebody laid a second layer over a failing first layer on a Saturday, which is legal and a genuinely different product.

So ask for the invoice. Not a deposit receipt, the final invoice, with a company name, the scope described, and the shingle line named. If it says tear-off, that is one answer. If it says overlay, or just roof work with a number next to it, that is a different answer.

Then ask two follow-ups. Is the workmanship warranty transferable to you as the new owner, and is the manufacturer warranty registered. A workmanship warranty from a company that has dissolved is a piece of paper, and that is not cynicism about the trade, just arithmetic about how many roofing outfits open and close along the Wasatch Front in any five year stretch.

If the seller cannot produce any of it, you are not necessarily looking at a bad roof. You are looking at an undocumented roof, which for pricing purposes is the same as an unknown roof.

Fifteen Minutes in the Attic Beats an Hour on the Driveway

If you get one trip through the house before you sign, spend it in the attic with a flashlight. Shingles show you wear. The deck shows you history.

Point the light at the underside of the sheathing and look for dark staining around nails and along seams. Rusted nail shanks mean warm moist air has been condensing on cold metal all winter, which is a ventilation problem that ages a roof from underneath no matter how new the shingles are. Old water tracks read as tea colored streaks running down a rafter and stopping. A dried stain is not automatically an active leak, but it is a spot to ask about.

Then look at the sheathing itself. On a mid-century house you will often find plank decking, individual boards with gaps between them, rather than a continuous sheet. That is normal for the era and not a defect. What matters is whether those boards are sound. Soft, delaminated, or sagging between rafters is the finding that turns a straightforward reroof into a bigger number, because you pay for the decking on top of everything else.

Last, look toward the eaves. Daylight along the edge means the intake is open. A wall of insulation packed to the roofline means it is buried, and this attic has been running hot in July and damp in January for years.

Where Older South Salt Lake Houses Actually Leak

Small older houses tend to grow. A back bedroom, a den off the kitchen, an enclosed porch. Additions where two rooflines meet at an improvised valley are one of the failure points I look for first, because a valley cut in by somebody working it out as they went is a valley that will move water where it was not planned to go.

The other era-specific things are fastener patterns from the decade the house was built, which you find out about the day the old roof comes off, and ventilation that was an afterthought in its decade.

None of that is alarming. It is the profile of the housing stock here, and it is exactly what the assessment is looking for. A roof over an original simple gable and a roof over a later addition on the same house are two different roofs with two different remaining lifespans, and I photograph and report them separately.

The gutter line belongs in the same conversation. Summer cloudbursts that overwhelm old rain gutters are the local pattern, and on a small lot the overflow has nowhere to go except the foundation. Have a look at what gutter capacity on these lots actually needs to be.

Making the Roof Part of the Negotiation Instead of a Surprise

Here is the thing buyers get wrong. They treat a worn roof as a dealbreaker or they ignore it entirely, and the useful position is in between. A roof with four or five years left is a known cost on a known schedule, and that is something you can negotiate with, provided you get the number before you sign rather than after.

So have somebody get on it during your inspection window. I climb it, photograph every slope separately, and tell you plainly whether you are looking at a repair, a few more seasons of watching, or a replacement to budget for. A good share of the calls we take end with a repair recommendation instead of a replacement pitch.

If it turns out the roof has real life left and needs a couple of flashings and a boot, that is a targeted repair and you can stop worrying about it. If it is genuinely at the end, you at least know that going in, and what a replacement involves on an older house is a conversation you can have on your own timeline rather than during a rainstorm in March.

Either way the assessment is free. Send us the address and the closing date and we will work around your inspection window. More on how we work here is on the South Salt Lake page.

Quick Answers

Can you look at a roof on a house I have not bought yet?

Yes, and we do it fairly often. We need permission from whoever controls access, which is usually arranged through your agent alongside the general inspection. Bring us in during that window and you get photographs of every slope and a straight read on remaining life before your contingencies expire rather than after.

The listing says the roof was done four years ago. Should I still have it looked at?

Yes, because four years old and four years of good performance are not the same claim. A newer roof can still have an unvented attic cooking it from below, flashings that were reused instead of replaced, or an overlay hiding bad decking. Age tells you very little on its own. Condition and installation quality tell you almost everything.

What paperwork should I ask the seller for?

The final invoice with the company name and the scope described, the shingle product line, any manufacturer warranty registration, and the workmanship warranty with its transfer terms. If a permit was pulled, that record exists too. Missing paperwork does not prove bad work, but it does mean you are buying an undocumented roof and should price it as one.

Is a stain in the attic automatically a leak?

Not automatically. Plenty of attic staining is old, from a problem that was fixed years ago, and some of it is condensation from poor ventilation rather than water coming through the roof. The difference matters because the fixes are completely different. Photograph it, note where it sits relative to the roof above, and ask somebody to look.

If the roof needs replacing, do I have to do it before I move in?

Almost never. Unless there is active water coming into the house, a worn roof is a scheduling question rather than an emergency. What you want is an honest read on how much runway you have so you can plan the work for a season that suits you instead of reacting to the first storm that finds the weak spot.