Cómo trabajamos · Paso por paso

Cómo corre un trabajo de tablaroca

Un contratista de tablaroca gana su dinero antes de que suba el primer panel. Casi todo lo que sale mal en una pared terminada fue decidido semanas antes, en el trazado o en el colgado, y se descubre meses después, bajo la pintura.

Esta página es la secuencia completa, con el detalle que normalmente tendrías que sacarnos por teléfono: las cifras de sujeción salen de GA-216, y en un ensamblaje con clasificación de resistencia al fuego el diseño listado manda sobre todo lo demás.

Pedir cotización Calculadora de material (760) 453-6389

La secuencia

Ocho pasos, en este orden

El orden no es negociable y el tiempo de secado tampoco. Lo que comprime un calendario es el compuesto de fraguado, no la prisa.

Paso 1

Layout and pre-walk

A drywall contractor makes his money before the first sheet goes up. We walk the framing with the GC or the owner, write down what we find, and lay the sheets out on paper before anything gets cut.

Walk the framing: crowned studs, twisted studs, framing out of plane, headers not flush. Every one of those becomes the finisher's problem, then the painter's problem, then a callback.
Check for missing backing and blocking — cabinets, televisions, grab bars, handrails, closet systems. Finding it now costs nothing. Finding it after the board is up costs a wall.
Confirm the board thickness against the framing spacing, and confirm it again for the ceilings. A ceiling framed 24 inches on center that is getting a water-based texture needs sag-resistant ceiling board or 5/8.
Confirm the rough-in is complete and inspected, insulation is in where it needs to be, and everything that has to live behind drywall is behind drywall.
Lay out the sheets. Board runs perpendicular to the framing on ceilings. Stagger the butt joints. Keep butts out of the middle of the most-lit wall in the house, and land them on back-blocking or butt clips anywhere the surface is going smooth or is going to be lit hard. Butt joints are the most visible defect under raking light, and the decision that determines them is made here, not at finish.
Get the finish level and the texture in writing before anything is hung.

Paso 2

Hang

Ceilings first, then walls, with the wall board run tight up under the ceiling board so the ceiling is carried rather than hanging on its own fasteners.

Ceilings perpendicular to the framing, full sheets where the room allows, joints staggered.
Cut tight at openings, not short. A gap gets filled with compound, and compound in a gap cracks.
Board around a door or window opening rather than butting a joint into the corner of it. A joint landing on the corner of an opening is a crack waiting for a reason.
Board tight to the framing. A sheet held off a crowned stud will telegraph that crown forever, so the stud gets planed or shimmed first.
In a rated assembly, orientation, layering and board type come off the listed design, not off habit.

Paso 3

Fasten and bead

Screws go in to a set depth on a set spacing, then the bead and trim go on. Depth of drive is the whole game at this stage.

GA-216 spacing for single layer: screws 12 inches on center on ceilings; on walls, 16 inches on center over 16 inch framing and 12 inches over 24 inch framing. Nails 7 inches on ceilings, 8 inches on walls.
Minimum penetration is 5/8 inch into wood and 3/8 inch past a steel member.
In a fire-resistance-rated assembly the listing dictates fastener type, length, head and spacing, and that is not a field decision.
Depth of drive: the head must dimple the face paper without breaking it. Break the paper and the screw has no holding power in the board at all, which is the mechanism behind a large share of pops and fastener photographing. That is why a serious hanger runs a depth-sensitive nose or a collated gun set once and left alone, not a drill with a clutch.
Then bead: corner bead, L-bead, J-bead, reveals, control joints. Control joints are a standards item, not an option — walls in an uninterrupted straight plane over 30 linear feet, interior ceilings at 50 feet with perimeter relief and 30 feet without, exterior ceilings and soffits at 30 feet, and wherever ceiling framing changes direction.

Paso 4

Tape

Paper tape bedded into wet compound over every joint and every inside corner. This coat is structural. Everything after it is cosmetic.

Prefill anything over about a quarter inch with setting compound and let it set before taping. Filling a wide gap with the bed coat is how a joint cracks four months later.
The bed coat has to be wet and thin enough for the tape to sit into it. Overly dry material under the tape blisters, and a blister is a tear-out and a redo.
Mesh tape only on flats and only with setting-type compound, because the compound has to be forced through the mesh to grab the paper face on both sides. Never mesh in an inside corner.
Setting compound for the bed on critical work — it shrinks less, so the joint is less likely to move after the paint is on.

Paso 5

Coat

How many coats is not a matter of taste. It is the finish level, and GA-214 is specific about it.

Level 4, the residential default: tape plus two separate coats on flat joints, tape plus one on interior angles, three separate coats on every fastener head. A crew claiming a Level 4 with two passes on the flats is not producing a Level 4.
Level 5 adds a skim over the entire surface on top of all of that.
Each coat has to dry, or set, before the next one goes on. Ready-mix will not be rushed. Setting compound is how a schedule gets compressed.
Each coat is wider than the last. A tapered joint typically finishes 14 to 20 inches wide and a butt joint 24 to 36, because there is no factory taper at a cut end — a butt joint has to be built out, not filled in. Those widths are trade practice rather than a number in the standard.

Paso 6

Sand

Hand, pole or vacuum sanding to the specified level. One rule matters more than all the others: do not sand through the face paper.

Sanding through into the paper face raises the fibers, which then drink primer and swell, leaving a fuzzy halo around joints and screws that no amount of paint will hide. It has to be skimmed and re-sanded, and if it is found after painting, the paint gets redone too.
Lighter grit, lighter pressure, and enough raking light while sanding to see what you are actually doing.
You cannot fix a thin coat with sandpaper. If the coat is short, the answer is another coat.
In an occupied house this is the step that decides whether the family still likes you. HEPA vacuum sanding at the source, sealed supply and return registers, the HVAC off or the return isolated, zip-wall containment and a negative air machine exhausting outside.

Paso 7

Texture

Prime first, then spray or trowel to the approved sample. Skipping the primer is the most common reason texture comes out blotchy.

Primer equalizes the suction between the paper face and the compound and gives a uniform color underneath. Without it the texture dries at different rates over the joints than over the field, and you get mottling and joints showing through texture.
Make the sample board and get it approved before anything goes on a wall. Texture names are not standardized, so the board is the spec.
Keep the air, the material and the surface above 55 degrees until it is completely dry.
Knockdown is a timed operation. One person sprays, one or two follow with the blade, and on a warm dry day the window is short.

Paso 8

Prime-ready and handoff

The level is complete, the surface is sanded, the dust is gone and the walls are ready for the painter's primer. Then we walk it with the painter.

GA-214 attaches the same note to Levels 3, 4 and 5: the final decoration specification should include a priming material before decoration. Read carefully, that puts the primer in the painting scope. In practice it gets negotiated, and often the drywall contractor primes — because texture requires a primer first anyway, or because a Level 5 has to be seen under primer before anyone can accept it.
Either way it goes in writing. Who primes, with what, and when, before anyone starts.
The primer has to be a high-solids pigmented drywall primer. The manufacturer definition is greater than fifty percent solids by weight, and the warning attached to it is that not all two-in-one paint and primer products equalize porosity.
Walk the job after primer and before topcoat. A bare sanded Level 5 tells you very little; a primed one tells you everything. A defect found at that moment costs a skim and a re-prime. The same defect found under two coats of deep-base eggshell costs the whole wall.

La entrega

Dónde termina la tablaroca y empieza la pintura

Esta es la costura donde más dinero se pierde y donde más culpa se reparte, y casi siempre porque nadie escribió quién hace qué. Así que lo escribimos.

Prime-ready and handoff

The level is complete, the surface is sanded, the dust is gone and the walls are ready for the painter's primer. Then we walk it with the painter.

GA-214 attaches the same note to Levels 3, 4 and 5: the final decoration specification should include a priming material before decoration. Read carefully, that puts the primer in the painting scope. In practice it gets negotiated, and often the drywall contractor primes — because texture requires a primer first anyway, or because a Level 5 has to be seen under primer before anyone can accept it.
Either way it goes in writing. Who primes, with what, and when, before anyone starts.
The primer has to be a high-solids pigmented drywall primer. The manufacturer definition is greater than fifty percent solids by weight, and the warning attached to it is that not all two-in-one paint and primer products equalize porosity.
Walk the job after primer and before topcoat. A bare sanded Level 5 tells you very little; a primed one tells you everything. A defect found at that moment costs a skim and a re-prime. The same defect found under two coats of deep-base eggshell costs the whole wall.

Who primes, you or the painter?

Whoever we agree on in writing, before either of us starts. GA-214 puts the priming material in the painting specification, so by the standard it is the painter's scope. In practice it goes either way — texture needs a primer under it regardless, and a Level 5 has to be seen under primer before anyone can accept it, so there are good reasons for us to do it. What matters is that it is decided and written down instead of assumed by both trades.

The wall shows joints after painting. Is that the drywall or the paint?

Often both contributed, and we will give you the fair accounting. Ours: fewer coats than the level requires, joints not feathered wide enough, tool marks and ledges left in the compound, sanding through the paper face, board not tight to framing, screws driven through the paper. The painter's: skipping the primer or using a low-solids paint-and-primer that does not equalize suction, spraying primer without back-rolling, two coats where the job needed three, not de-nibbing before topcoat. And a large share of it is neither — it is a specification failure: gloss or deep-tone paint over a Level 4, which GA-214 warns against on the Level 4 page itself, or wall-grazing fixtures six inches off a Level 4 wall. We are not here to blame the painter. Most of the time the wall telegraphs because the finish level, the paint sheen and the lighting were never matched to each other, and that decision got made months before anybody picked up a trowel.

La regla corta

Caminamos el trabajo después del primer y antes de la primera mano de color. Un nivel 5 lijado y desnudo no te dice casi nada; uno con primer encima te lo dice todo. Un defecto encontrado en ese momento cuesta un skim y un re-primer. El mismo defecto encontrado bajo dos manos de eggshell de base profunda cuesta la pared completa.

La cuadrilla

Dos oficios con un solo nombre

La tablaroca son dos oficios distintos que comparten una palabra, y los dueños de casa casi nunca lo saben. El propio sistema de salario prevaleciente de California los trata por separado: el instalador de tablaroca y lather va bajo los Carpinteros, y el acabador y cintero va bajo los Pintores y Oficios Aliados.

Vale la pena saberlo cuando estés comparando cotizaciones: colgar es velocidad y fuerza, acabar es oficio. Una cuadrilla puede ser excelente en una mitad y mediocre en la otra, y la pared terminada solo te muestra la segunda.

La mayoría de las fallas que están más abajo en esta página se previenen a nivel de capataz, semanas antes de que hubieran ocurrido.

Hanger

Measures, cuts, lifts and fastens board. A strength-and-speed trade paid by the board or the square foot almost everywhere. A good hanger is the reason a finisher has an easy week: tight cuts, board tight to framing, butts where they were laid out, screws dimpled and not broken through.

Stocker and scrapper

Moves board off the truck, stages it room by room so the hangers never walk for material, and clears the cutoffs and debris behind them. It looks like the least skilled job on the crew and it is the one that sets the pace of the whole hang.

Taper

Runs the bed coats, often with an automatic taping tool. This is where the joint is either made strong or made a problem, and the work is judged months later when either nothing has cracked or something has.

Coater

Runs the fill and finish coats with boxes and angle heads, building each coat wider than the last. This is where a flat wall gets its flatness and where a butt joint either disappears or does not.

Finisher and sander

The final pass and the sand. The craft trade, and the person who decides what the job looks like. Also the person who has to know when to stop sanding and put on another coat instead.

Texture sprayer

On production work a dedicated sprayer; on custom work usually the same finisher who coated the walls. Mix, gun, tip and pressure are set to the approved sample, not to a habit.

Foreman

Runs the layout, the sequence and the inspection, and owns the conversation with the GC and the other trades. Most of the failures further down this page are prevented at this level, weeks before they would have happened.

Modos de falla

Qué sale mal, y de quién es

Cada una de estas tiene un aspecto, una causa real y una reparación. Algunas son responsabilidad nuestra, otras son del armazón o del edificio mismo, y decimos cuál es cuál. Un dueño de casa que oye a un contratista nombrar estas cosas puede distinguir entre una cuadrilla que sabe qué son y una que se las va a pasar al pintor.

Nail pops and screw pops

Qué lo causa

Mostly framing drying out. Lumber delivered at up to about nineteen percent moisture content drops toward ten percent once a house has been through a heating season, and as the stud shrinks away from the board the fastener stays where it is and pushes the compound out. The board itself moves thousandths of an inch and is not the cause. The other contributors are loose attachment, framing out of alignment, a fastener longer than it needed to be, and a screw driven through the face paper so it never had holding power.

Cómo se arregla

Drive a new fastener of the proper length about an inch and a half from the popped one, into the same framing member, pressing the board tight to the framing as you go. Then remove or reseat the popped fastener just below the face of the panel, and re-coat. A handful of pops in the first year after framing dries is normal and is not a workmanship defect. A systematic pattern of them is, and the place to look is fastener length and depth of drive.

Cracking at corners and openings

Qué lo causa

Stress concentrations. Cracks start at the corners of doors and windows, at the junction of a wall and a raked ceiling, and where framing changes direction. The usual contributors are a joint landing on the corner of an opening instead of being cut around it, a missing control joint on a long run, mesh tape used in an inside corner, and a heavy fill of drying-type compound that shrank.

Cómo se arregla

Prevention is at layout and hang — board around openings, control joints where GA-216 calls for them, paper tape in every inside corner, setting compound in any heavy fill. Repairing an existing crack means opening it up, re-taping properly, and if there is no control joint on a thirty-foot-plus run, putting one in. Filling a moving crack with compound just relocates the argument.

Truss uplift

Qué lo causa

Not a drywall defect at all. In a truss roof over an insulated attic, the lower chord stays warm and the upper chords stay cold, and the resulting difference in moisture content arches the truss upward in winter and relaxes it in summer. That lifts the ceiling off the top plate of interior partitions. The crack appears at the wall and ceiling intersection of interior walls, opens in winter, closes in summer, and comes back every year no matter how many times it is patched.

Cómo se arregla

Let it move rather than trying to hold it down. The building-science answer is a floating corner: keep ceiling fasteners well back from interior partition top plates — the published guidance is not closer than about eighteen inches — and use drywall clips so the board bends instead of cracking. Done that way there is no crack to repair. Explaining this before the ceiling goes up is a lot cheaper than explaining it every February.

Joint banding and joint photographing

Qué lo causa

Wide soft-edged bands appearing after painting, right where the seams are, usually ten to twenty inches wide. Most often it is a difference in sheen rather than color — it flashes when you look down the wall and vanishes head-on. The mechanism is differential porosity: the paper face and the joint compound drink paint at different rates, so the same paint dries to two different sheens. Skipping the primer, or using a low-solids two-in-one paint and primer that does not equalize the suction, is the usual trigger. On a wall that was always going to be dark or glossy, the real cause is upstream — the level was specified too low.

Cómo se arregla

A high-solids pigmented drywall primer, back-rolled rather than only sprayed, so the whole surface reads as one material to the topcoat. Where the paint is non-flat or deep-tone or the light is critical, the durable fix is a Level 5, because it makes the surface literally one material instead of two.

Sanding through the face paper

Qué lo causa

The finisher sands past the compound and into the board's paper face, usually while trying to fix a coat that was too thin. Poor light while sanding and too aggressive a grit do the rest.

Cómo se arregla

There is no shortcut: the area gets skimmed and re-sanded properly, and if it was found after painting, the paint gets redone. It is entirely preventable with a proper coat, lighter grit, lighter pressure and enough raking light to see the surface. We name it here because a homeowner who hears a contractor name it can tell the difference between a crew that knows what it is and a crew that will hand it to the painter.

Ridging and beading on a joint

Qué lo causa

A narrow hard raised line right down the center of a taped joint, distinct from banding — banding is a wide soft zone, this is a thin hard line you can feel with a fingertip. It usually turns up weeks or months later, most often on ceilings and long walls, and it is associated with moisture and dimensional movement in the joint.

Cómo se arregla

Prevention: do not over-build the center of the joint, let every coat dry fully before the next, use setting compound for heavy fills, and respect the control joints. Repair means cutting the ridge back, re-coating wide and feathering it out much further than the original joint.

Ceiling sag

Qué lo causa

Almost always 1/2 inch regular board on framing 24 inches on center that then received a water-based texture. GA-216 does not permit it — a textured ceiling at that spacing needs sag-resistant ceiling board or 5/8 inch. The other cause is insulation loaded on top of the board beyond what the board is rated to carry.

Cómo se arregla

Once board has sagged it does not come back; it gets replaced with the correct board. Before it happens it is a five-minute decision at takeoff, which is why we check ceiling framing spacing against board thickness before we order.

Butt-joint humps

Qué lo causa

The factory taper on the long edges gives a recess to fill. A cut end has no taper, so a butt joint has to be built out over a couple of feet on each side to read flat. Poorly executed butt joints are the most visible thing on a wall under raking light.

Cómo se arregla

Solved at hang, not at finish: back-blocking or butt-board clips to pull a slight recess into the joint, or simply keeping butts off the critical walls in the layout. At finish the only tool left is building it out very wide, which works but costs more than doing it right at hang.

Corner bead cracking or popping

Qué lo causa

Nailed-on metal bead moving with the framing, or bead run over an out-of-plane corner and shimmed up with compound so there is a thick mass of mud waiting to crack.

Cómo se arregla

Straighten the corner before the bead goes on. Paper-faced metal bead bedded in a full wet coat, or vinyl bead set in adhesive, largely eliminates it because nothing is fastened through the bead and nothing relies on a heavy fill.

¿Ya tienes una de estas en tu pared?

El árbol de decisión de reparar o reemplazar recorre exactamente estas fallas — agujero, grieta, daño por agua, pandeo, cinta que falló, tornillos saltados — y te dice si es para hacerlo tú, para un resane, para reemplazar la sección o para rehacer el plano completo, con el razonamiento a la vista.

Abrir el árbol de decisión

Las especificaciones detrás de la secuencia

Qué nivel de acabado corresponde a tu pintura y a tu luz, qué panel va en cada cuarto, qué compuesto y qué cinta, y qué esquinero. Tres páginas, escritas para que puedas discutir con nosotros en vez de solo creernos.

Niveles de acabado Materiales Texturas

Preguntas

Lo que preguntan los dueños de casa

How long does it take?

The honest answer is in calendar days, not production rates, because the thing that controls the schedule is drying time and nobody controls that. A single room repair is typically four days: hang and tape, coat, coat and sand, then texture or prime. A whole-house remodel is a day or two to hang and then four to six working days of finishing, more for a Level 5, more again in a cold or damp week. Setting compound can compress that; ready-mix cannot. Anyone promising a three-coat Level 4 in two days with ready-mix is either using hot mud or skipping a coat.

How do you handle dust in an occupied house?

Layered, and we will tell you which layers your job is getting. Poly and tape on floors and openings. Zip-wall containment with zipper doors at the work area. Sealed supply and return registers with the HVAC off or the return isolated — a running return pulls sanding dust into the ductwork and redistributes it through the house for months, and it is the step most crews skip. HEPA vacuum sanding at the source, which is slower than dry sanding and is the single most effective thing anyone can do in an occupied house. And a negative air machine with HEPA filtration exhausting outside, so air flows into the work area and never out of it. On a pre-1978 house, containment and HEPA are not a courtesy — the EPA lead rule requires them.

Why are the bids so different?

Almost always one of four things. A different finish level. A different board spec. Different inclusions — texture, priming, specialty trim, high ceilings, demolition and dump fees, containment, framing repair. Or a crew that is not carrying workers compensation and liability. The useful question to ask all three bidders is: which GA-214 level, on which surfaces, and are texture and priming in the number? If two bids answer that differently, they are not bids on the same job.

What is normally included and what is extra?

Normally included: board, fasteners, tape, compound, standard corner bead, and the labor to hang, tape, coat and sand to the specified level, plus cleanup of drywall debris. Normally extra, and this is where bids diverge: a finish level above the base, texture, specialty board, specialty trim like bullnose or reveals, ceilings over nine or ten feet and anything needing scaffold or a lift, framing repair, demolition and disposal, containment and negative air in an occupied house, priming, asbestos or lead testing, insulation, and extra mobilizations when we have to come back because another trade was not finished. We itemize those rather than bury them.

You quoted per square foot. Is that my house's square footage?

No, and this catches almost everybody. Drywall is measured in square feet of board, not square feet of floor. Once you count both faces of the interior walls, the ceilings, the closets and the garage, a house contains several times its floor area in board. So a per-square-foot price on drywall is not comparable to your home's listed square footage, and a homeowner dividing one by the other is comparing the wrong two numbers. Ask for the board quantity and the price will make sense.

Is a very low bid a problem?

Do the arithmetic rather than trusting an adjective. California publishes prevailing wage determinations for drywall installers and for drywall finishers in San Diego and Orange counties — they are public, they are current, and they tell you what a legally employed, insured drywall worker costs per hour in wages and benefits on a public job before the contractor has bought a single sheet of board or paid for a truck. Private residential is not public works and the numbers are not the same, but the floor is instructive. If a bid is half of everyone else's, something in that list is not in the price, and the two usual candidates are coats and insurance.

Do you fix the framing if it is bad?

We will, and we will tell you before we do, because it is not drywall scope. Crowned studs, missing backing, framing out of plane, headers not flush — those all become visible in the finished wall, so somebody has to deal with them. We price it as its own line and get it approved rather than absorbing it quietly, which just teaches everyone that it is free and leaves you thinking a wavy wall was a drywall problem.

Do you do repairs, or only whole jobs?

Both. A single patch in a hallway is a real job and it gets the same sequence as a whole house, just compressed: cut back to solid board and to framing where we can, back the patch properly, tape it with paper, coat it out wide, match the texture off an approved sample, and tell you honestly what the wall will need in paint afterward.

Will there be pops or cracks later?

Probably a few, and here is the honest version. New framing dries out over the first year and a handful of fastener pops is a normal consequence of that, not a defect. Hairline cracking at a door corner or a wall and ceiling junction in a new house is usually the building settling. What is not normal is a systematic pattern of pops, a crack that keeps coming back in the same place every winter, or joints that show up as bands after painting. Ask any contractor, us included, how first-year touch-up is handled, and get the answer in the contract before you sign rather than after something moves.

Caminamos el armazón antes de colgar nada

Escribimos lo que encontramos, lo cotizamos como su propia línea y lo aprobamos contigo, en vez de absorberlo en silencio y dejarte pensando que una pared ondulada era un problema de tablaroca. Dino Berg tiene la licencia CSLB #989989 desde 2014.

(760) 453-6389 dino@dinosdrywall.com