Older Walls Dry Slower. How Water Damage Restoration Changes With the Building

Crews prices a job on square footage and water category. The building itself changes the work more than either number suggests. A 1920s brick bungalow and a 2015 townhouse take the same amount of water and behave nothing alike. Drying plans that ignore that end up running short.

The supply line let go under the bathroom sink upstairs. Water went through the floor into the joist bay and out through the ceiling below. What happens next depends heavily on what the walls are made of.

Water damage restoration is described as a single process everywhere you look. The usual version runs extract, dry, monitor, and then rebuild. Those steps hold, but the timing and methods shift with the structure’s age. Older construction takes longer and needs a different set of decisions.

Denver has an unusual spread of building stock for a city this size. Restoration Logistics highlights plaster walls, brick veneer, older framing, and high-rise condos on its Denver page. Exactly the right list to be asking about. Anyone quoting your job without asking what the walls are made of is guessing.

Plaster and lath dry slower than drywall.

Drywall is made of paper and gypsum, and it gives up water reasonably quickly. Plaster over wood lath is denser and thicker, and it sits on timber that swells when wet.

Crews try to save plaster where they can, because replacing it properly costs more than most people expect and matching the finish is skilled work. Expect longer drying times and more monitoring visits. It also asks for more patience from you. A crew cutting plaster out on day one has chosen the fast route over the right one.

Four things change when the walls are plaster:

• Drying runs days longer than a drywall equivalent

• Readings need taking through the plaster rather than off the surface

• Wood lath behind it swells and can crack the finish

• Replacement needs a plasterer rather than a drywall crew

Brick veneer holds water behind the wall.

Brick veneer looks structural but carries no load. There is a cavity behind it, designed to allow water to run down and out through weep holes at the base.

When the weeps get blocked by mortar droppings or landscaping, water sits in the cavity instead. It then finds the sheathing and the framing behind it. A leak that looks like it came through the roof sometimes came through the wall and traveled down. Checking the weeps is worth doing after any wall-related loss.

Any brick veneer property needs these four checks:

• Whether the weep holes at the base are clear

• Whether mortar droppings have bridged the cavity

• How wet the sheathing reads behind the brick

• Whether grading or planting sits above the weep line

Dry air outside makes the inside look better than it is.

Low humidity helps a dry-out, and it also hides the problem. Surfaces give up water quickly in dry air, so a floor can feel dry within hours while the material beneath it remains saturated.

Altitude adds a second complication on top of that. Refrigerant dehumidifiers lose capacity as the air thins, which is why desiccant units are used at this elevation. A crew running standard equipment without adjusting for that pulls moisture more slowly than the plan assumes. Ask which type is sitting in your basement.

Dry air changes four things about the job:

• Surfaces read dry while the material underneath stays wet

• Meter readings matter far more than touch

• Dehumidifier type has to suit the elevation

• Rapid surface drying can trap moisture underneath

Water in a condo is rarely one owner’s problem.

Unit boundaries mean nothing to water at all. A supply line failing on the eighth floor reaches the seventh and the sixth before anyone finds the shutoff.

That turns one loss into several claims running at once. The association policy usually covers the building to a defined point, and your policy picks up what sits inside that line. Where the line falls is written in the declaration rather than decided by anyone on site. Read that document before agreeing to who pays for what.

These questions come up fast in a multi-unit loss:

• Where the declaration draws the line on coverage

• Who instructs the restoration company, you or the association

• Whether units below are being documented as well

• Who holds responsibility for the failed component

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Ice damming puts the water in the wrong place.

Heat escaping through the roof melts snow above, and it refreezes at the cold eave. That ridge of ice backs water up underneath the shingles.

From there it enters at the top of the wall and runs down inside it. Homeowners see a stain appear near the ceiling and assume the roof is leaking. The roof is part of it, and the wet material usually runs from the top plate down to the floor. Drying that means opening the wall higher than the stain suggests.

Square footage and water category get you a rough number. What the building is made of gets you an accurate one. Ask any firm quoting the job what they plan to do about the plaster and the cavity behind the brick. An assessment costs nothing, and the question costs less.