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DensGlass Sheathing

Glass-mat sheathing • Roswell, GA

DensGlass Sheathing Replacement in Roswell

On older Roswell buildings, the sheathing behind stucco and EIFS often takes years of water before the facade shows it. We open the wall over the wet area, replace the board with glass-mat gypsum sheathing, rebuild the weather barrier and close it up to match.

Wet sheathing removed
Glass-mat board installed
New barrier & flashing
Finish matched to facade

Call (770) 501-8588 How the repair works

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Roswell commercial stucco & EIFS. Property managers, boards, owners & builders.

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Behind the facade

The damage is behind the finish

By the time a stucco or EIFS facade on a Roswell office building, condominium or apartment community shows soft spots, bulges or staining below a window, the sheathing behind it has usually been wet for a long time. Many buildings from the 1980s and 1990s were sheathed with paper-faced gypsum or wood-based panels, and both lose strength once they stay wet. The finish can look almost normal while the board behind it crumbles.

Moisture mapping tells us where the damage is and how far it extends. We open the cladding over that area and a margin around it, check the framing, and replace damaged board with glass-mat gypsum sheathing, which holds up to moisture far better than paper-faced board. Framing that is damaged is documented and repaired before anything is closed up.

The new sheathing is tied into a lapped weather barrier and flashed at the openings that let the water in, then the cladding is rebuilt and the finish matched to the surrounding wall. We correct the original entry point every time, because new sheathing behind the same failed detail will get wet again. For the cladding side, see EIFS restoration.

Exterior wall opened with new glass-mat sheathing installed behind the cladding

1999rebuilding Georgia walls

What we rebuild

Sheathing & substrate repairs in Roswell

The facade only tells you there is a problem. These are the layers we rebuild once a wall is open.

Water-damaged sheathing

Swollen OSB, delaminated plywood and softened gypsum board cut back to sound material and replaced with glass-mat board.

Moisture readings guide the cut

Weather-resistive barrier

New barrier lapped over the sheathing and tied into the existing barrier at every edge of the repair.

Every lap sheds water down

Window & storefront openings

Sill pans and jamb flashing integrated with the barrier so water that reaches an opening drains out.

Where most damage starts

Parapets & roof-to-wall joints

Flashing corrected where a roof, balcony or breezeway meets the wall, a common source of wet sheathing.

Coordinated with the roofer

Termite-damaged substrate

Sheathing and trim damaged by termites replaced, and cladding that runs below grade corrected.

Treatment stays with pest control

Framing documented

Corroded steel studs or decayed wood framing are photographed and referred to the owner’s engineer before the wall is closed.

Engineer decides structure

Choosing the board

Why glass-mat board goes back in

Putting new OSB or paper-faced gypsum back behind the cladding puts the same vulnerable material in the same spot on a wall that has already shown it can get wet. Glass-mat gypsum sheathing has fiberglass facings in place of paper and a moisture-resistant core, so a wet spell does not break it down or feed mold the way wood and paper can.

It is not waterproof on its own. The weather barrier, flashing and sealant joints are still what keep water out, and every replacement we do includes them. Where the sheathing is part of a building’s structural design, or where we find damaged studs, tracks or framing, the owner’s engineer specifies that repair and we rebuild the wall to it. You see photos of the open wall before anything is closed.

Sheathing behind stucco & EIFS
Board	When it stays wet	Our approach
OSBCommon on older wood frame	Swells and loses strength	Cut out and replaced
Plywood	Delaminates over time	Replaced or per engineer
Paper-faced gypsum	Facing and core break down	Replaced with glass-mat
Glass-mat gypsumDensGlass-type board	Resists rot and mold	Installed at the repair
Barrier & flashingOver any board	Sheds water to the weeps	Rebuilt every time

Our process

How a sheathing replacement runs on site

The wall is open for as short a time as possible and protected at the end of every day, with the work phased around tenants and residents.

Survey & map

We take moisture readings across the elevation to find the edges of the wet area and the leak source before any cladding comes off.

Readings mapped on photos
Leak source identified
Itemized written scope

Open & replace

Cladding is removed over the damaged area, wet sheathing is cut back to sound material, and glass-mat board is installed.

Daily weather protection
Framing issues documented
Changes approved first

Barrier, flash & finish

New barrier and flashing are lapped into the existing wall, then the stucco or EIFS is rebuilt and color matched.

Barrier lapped correctly
Flashing at every opening
Color & texture matched

Soft or bulging areas on your facade?

The longer sheathing stays wet, the more of the wall it takes with it. A moisture survey shows how far it has gone.

Request a site walk

Hidden damage in Roswell

Where we find wet sheathing in Roswell

The pattern repeats from building to building, which makes it easier to find.

On Roswell properties, wet sheathing tends to concentrate in a few places: below window corners on multifamily and office buildings, at the base of walls where irrigation and shade keep the cladding damp, and under parapets and roof-to-wall transitions where flashing was never installed. North-facing and tree-shaded elevations, common across the city, dry slowly and often show the most damage. We map the whole wall rather than assume, because damage that stops at the edge of one opening is the exception.

Below windows

Water entering at sill corners runs down inside the wall and soaks the board beneath.

Base of the wall

Shaded, irrigated elevations where sheathing near grade stays wet the longest.

Under parapets

Missing roof-to-wall flashing that feeds water into the top of the wall.

Roswell
Holcomb Bridge Road
GA 400 corridor
Alpharetta Highway
Historic Roswell
Mountain Park
Alpharetta
Sandy Springs
Dunwoody
Johns Creek
East Cobb

Questions & answers

Sheathing replacement FAQ

What Roswell managers, boards and owners ask when we find damage behind the facade.

Why do older Roswell buildings have so much wet sheathing?

Many were built with barrier EIFS or stucco over paper-faced gypsum or wood-based sheathing, often without the flashing details now considered standard. Decades of small leaks at windows and joints add up in materials that do not tolerate moisture.

Does sheathing replacement need a permit in Roswell?

Work that opens the exterior wall and replaces sheathing or framing often requires one. Check with the City of Roswell building department for your scope. We provide the written scope and documentation the permit may require.

What is DensGlass?

DensGlass is a brand of glass-mat gypsum sheathing, often written “denglass.” It uses fiberglass facings instead of paper, so it resists moisture and mold far better than paper-faced board.

Do you have to remove the whole facade?

Rarely. We remove the cladding over the damaged area plus a margin, replace what is wet, and rebuild. Moisture mapping keeps the openings as small as the damage allows.

Can residents and tenants stay in the building?

Yes. We open and close walls in sections, protect the interior side and keep each opening as short as possible. On multifamily buildings we coordinate notices with management.

How is sheathing replacement priced?

By the area opened, the extent of framing repair, the cladding system being rebuilt and access. Because hidden damage can extend further than readings show, the quote explains how unit pricing applies to any additional area.

Request a sheathing repair quote in Roswell

Tell us what you are seeing on the facade. We will map the moisture, find the extent of the damage and put the repair scope in writing.

Call (770) 501-8588 Commercial quote