One house can be three houses in Davis County. The postwar homes around Roy started small, and most of them grew: a bedroom off the back, a garage converted, a porch enclosed, each addition sided in whatever was current that decade. Then somebody re-sided the front and stopped at a corner. What you end up with is a single building carrying several different wall assemblies, built to different standards, meeting each other at joints nobody planned. Those joints are where the trouble almost always turns out to be.
It is common here to find original wood or lap siding on one part of a house, aluminum from a later re-side on another, and vinyl or a stucco finish on the newest section, all on the same building. Behind them the assemblies differ too: different sheathing, different or entirely absent weather barriers, different framing depths, sometimes different foundation and floor heights. None of that is a defect on its own. It becomes one when the pieces have to meet each other and nobody detailed the meeting.
A useful assessment starts by mapping the house rather than the material. Which section is original, which parts are additions, what order were they built in, and where does each cladding type start and stop? A contractor who spends twenty minutes establishing that will find the vulnerable joints quickly, because the joints are the boundaries on that map. Working the other direction, starting from whatever damage is visible, usually leads back to the same handful of places anyway, just a good deal more slowly.
The junction between an addition and the original house has to handle several things at once. The two structures settle differently, which opens joints. Roof planes from the addition often die into an existing wall, which puts concentrated runoff at a spot that was never designed to take it. Cladding changes direction or material at the corner. Wall thicknesses differ, so trim has to bridge a step. Any one of these is manageable on its own. Stacked at the same joint and executed quickly, they are where you find rot.
When we look at a re-sided Davis County home, that junction is the first place we send somebody. The signs to check are staining that runs vertically down the seam, trim that has separated or been repeatedly re-caulked, fasteners rusting through the finish nearby, and soft spots when you press along the joint. Where a roof edge lands against a wall, there should be metal directing water back out onto the cladding. That is a wall detail, even though the roof itself is a separate job.
You have two honest options. Keep the sections distinct and make sure every boundary between them is properly flashed, trimmed, and maintained, which is workable and far less disruptive, but leaves you with a house that reads as pieced together and with joints that stay permanently on your maintenance list. Or bring the exterior back to one assembly, which means stripping to sheathing across the whole building, running the barrier continuously around every corner, and finishing in a single material throughout.
The second route solves the underlying problem, because a continuous weather barrier with no unplanned interruptions is what all of this is really about. It also surfaces whatever the older sections were hiding, which is unwelcome in the moment and much better than the alternative. If you go that way, ask for the additions to be opened first. They are typically the parts built fastest and with the least oversight, and what turns up there tends to set the scope for the rest. Call 801-644-9000 to get started.
Yes, but only by taking the existing material off. Cladding a mismatched house with one new product over the old layers preserves every underlying difference and adds another on top. Stripping to sheathing lets a crew correct framing and thickness differences, run one continuous weather barrier around the building, and finish in a single material. That is the version that both looks unified and performs as one wall.
Often yes. Additions on smaller postwar homes were frequently built with less oversight and tied into a structure that had already settled. The connection details take concentrated runoff and differential movement at the same time. That does not mean the original house is fine. It means that when you have limited inspection time to spend, the addition and its junctions are the highest-yield place to spend it.
They can, and sometimes that is the right call when the addition is the failing part. What has to be decided in advance is how the new work terminates against the old: the corner detail, the trim step where wall thicknesses differ, and how the weather barrier gets tied in rather than simply stopped. If that boundary is treated as an afterthought, you have moved the problem instead of fixing it.
A minute of detail now saves an hour of guessing later, on both ends.
