First Drywall

General maintenance and repair workers maintain and repair machines, mechanical equipment, and buildings. They work on plumbing, electrical, and air-conditioning and heating systems.

General maintenance and repair workers typically do the following:

• Maintain and repair machines, mechanical equipment, and buildings
• Troubleshoot and fix faulty electrical switches
• Inspect and diagnose problems and figure out the best way to correct them, frequently checking blueprints, repair manuals, and parts catalogs
• Do routine preventive maintenance to ensure that machines continue to run smoothly
• Assemble and set up machinery or equipment
• Plan repair work using blueprints or diagrams
• Do general cleaning and upkeep of buildings and properties
• Order supplies from catalogs and storerooms
• Meet with clients to estimate repairs and costs
• Keep detailed records of their work

General maintenance and repair workers are hired for maintenance and repair tasks that are not complex enough to need the specialized training of a licensed tradesperson, such as a plumber or electrician.

They are also responsible for recognizing when a job is above their skill level and needs the skills of a tradesperson. For more information about other trade occupations, see the profiles on electricians; carpenters; heating, air-conditioning, and refrigeration mechanics and installers; and plumbers, pipefitters, and steamfitters.

Workers may fix plaster or drywall. They may fix or paint roofs, windows, doors, floors, woodwork, and other parts of buildings.

They also maintain and repair specialized equipment and machinery in cafeterias, laundries, hospitals, stores, offices, and factories.

They get supplies and repair parts from distributors or storerooms to fix problems. They use common hand and power tools such as screwdrivers, saws, drills, wrenches, and hammers to fix, replace, or repair equipment and parts of buildings.

Drywall and ceiling tile installers hang wallboards to walls and ceilings inside buildings. Tapers prepare the wallboards for painting, using tape and other materials. Many workers do both installing and taping.

Drywall installers typically do the following:

• Review design plans to minimize the number of cuts and waste of wallboard
• Measure the location of electrical outlets, plumbing, windows, and vents
• Cut drywall to the right size, using utility knives and power saws
• Fasten drywall panels to interior wall studs, using nails or screws
• Trim and smooth rough edges so boards join evenly

Ceiling tile installers typically do the following:

• Measure according to blueprints or drawings
• Nail or screw supports
• Put tiles or sheets of shock-absorbing materials on ceilings  
• Keep the tile in place with cement adhesive, nails, or screws

Tapers typically do the following:

• Prepare wall surface (wallboard) by patching nail holes
• Apply tape and use sealing compound to cover joints between wallboards
• Apply additional coats of sealing compound to create an even surface
• Sand all joints and holes to a smooth, seamless finish

Installers are also called framers or hangers. Tapers are also called finishers. Ceiling tile installers are sometimes called acoustical carpenters because they work with tiles that block sound.

Once wallboards are hung, workers use increasingly wider trowels to spread multiple coats of spackle over cracks, indentations, and any remaining imperfections. Some workers may use a mechanical applicator, a tool that spreads sealing compound on the wall joint while dispensing and setting tape at the same time.

To work on ceilings, drywall and ceiling tile installers and tapers may use mechanical lifts or stand on stilts, ladders, or scaffolds.

Plasterers and stucco masons apply coats of plaster or stucco to walls, ceilings, or partitions for functional and decorative purposes. Some workers apply ornamental plaster.

Plasterers and stucco masons typically do the following:

• Clean and prepare surfaces
• Nail a wire mesh to the surface to ensure the plaster or stucco stays in place
• Mix plaster and stucco to desired consistency
• Apply two or three coats of plaster or stucco using trowels, brushes, or spray guns
• Rough the undercoat surface with a scratcher so the finish coat will stick
• Create decorative textures using brushes, trowels, sand, or stones
• Apply sealants or waxes to protect the finish and allow for easy cleaning

Plasterers apply coats of plaster to interior walls and ceilings to form fire-resistant and relatively soundproof surfaces. Using trowels, workers spread plaster on solid surfaces, such as concrete block, or supportive wire mesh called lath. They also may apply plaster over drywall to create smooth or textured scratch-resistant finishes. Using molds and a variety of troweling techniques, some plasterers make decorative and ornamental designs, which require special skills and creativity.

Plasterers may also install prefabricated exterior insulation systems over existing walls--for good insulation and interesting architectural effects--and cast ornamental designs in plaster.

Stucco masons usually apply stucco--a mixture of cement, lime, and sand--on building exteriors over wire lath, concrete, or masonry. Stucco masons also may apply other durable plasters, such as polymer-based acrylic finishes, to exterior surfaces. Stucco masons may also embed marble or gravel chips into the finish coat to achieve a pebble-like, decorative finish.

In addition, when required, stucco masons apply insulation to the exterior of new and old buildings. They cover the outer wall with rigid foam insulation board and reinforcing mesh, and then trowel on a base coat.