HOW TO MAKE A SEMI-COLUMN IN PLASTERBOARD

Here are easy step-by-step instructions for making a half-board in plasterboard:

Preparation and measurements:

• Lay on the ground, to protect the flooring around the positioning area of ​​the half-column, corrugated cardboard and cover cloths or, alternatively, felt cloth;

• Outline the semicircle that represents the diameter of the semicolumn on the ground with a construction pencil, using measurements with a professional tape measure. Note: it will be necessary to take into account the number of capitals to be inserted in the half-column and the dimensions of the base to properly evaluate the total width that the finished work will occupy;

• Using a plumb line or more simply a laser, bring the newly created semicircle back to the ceiling and draw it with a construction pencil;

• "Skeleton" of the half-column:

• Place the base of the half-column in plaster on the ground, with nylon dowels to screw @ 6, which looks like a metal semicircle to be mounted on the wall to simulate the presence of a column. Note: if you don't want to ruin the flooring, you can use double-sided tape;

• Carry out the same operation on the ceiling, fixing the metal semicircle. Note: use 3.5x25 phosphated nail screws in the case of an already existing plasterboard false ceiling, use steel dowels @ 8 in the case of other types of ceilings;

• Fasten 2 uprights (facing each other) to the end of the internal perimeter of the metal semicircle mounted on the ceiling, with 4.2x13 teks screws, drill bit or with a punching machine;

• Carry out the same operation in the internal perimeter of the semicircle on the ground with the end part of the uprights;

• With a magnetic bubble level, make sure that the 2 uprights are level and therefore perfectly vertical;

Coverage of the "skeleton":

• Take the ready-made module of the plasterboard half-column and position it so that the two ends perfectly match the two previously positioned uprights;

• Screw the module to the uprights with 3.5x25 nail tip phosphated screws;

• In the event that the half-column just applied does not fully cover the height of the skeleton made, proceed with measuring with a professional tape measure the missing part to be covered;

• Using the measuring tape, record the measurement just taken on another ready-made half-column module and mark the exact point where to cut the module with a construction pencil;

• Proceed with cutting the module with a "saw" from wood with hardened teeth;

• Insert a metal semicircle extension into the internal perimeter of the half-column previously fixed to the uprights;

• Screw the metal semicircle to the semicolon with 3.5x25 nail tip phosphated screws. Note: make sure that half of the metal extension remains uncovered so that the other half-column can be applied on it;

• Take the module of the half-column previously cut and position it on top of the one already fixed to the uprights;

• With the help of a screwdriver drill with depth adjustment, fix this second module to the metal semicircle extension and to the uprights with phosphated screws, 3.5x25 nail tip;

Base and Capital:

• Now that the column has closed, the base and capital will be applied. These two elements will be placed at the base and at the top of the column;

• Take the element that makes up the base and place it in the lower part of the column with adhesive and / or black phosphated screws with a 3.5x35 nail tip;

• Take the element that makes up the capital and place it in the upper part of the column with adhesive and / or black phosphated screws with a 3.5x35 nail tip;

Grouting and smoothing:

• Place the semi-adhesive gauze net on all joints;

• Now proceed, with a professional spatula, to grouting all the joints and the heads of the screws;

• Then wait for the grout to dry and if necessary pass a second coat (see article on grouting and follow the instructions);

• Sand everything with a manual grinder by removing the excess grout present and flattening any discrepancies in the work;

• Prepare the appropriate skim coat and with a professional trowel pass it all around the half-column in a homogeneous way;

Decoration and fantasy:

• Now that the half-column is ready we can pass a layer of fixative with a brush;

• All that remains is to proceed to decorate and paint the column just made, leaving room for imagination.

CAUTION:

The half-columns in plasterboard can be made with or without base and / or capitals.

In this case, the plasterboard half-column will be easier to make since the ceiling-to-ground measurement will also be the size of the half-column itself and there will be no complicated steps to perform. coli in taking into account the number of capitals to be inserted in the half-column and the dimensions of the base to properly evaluate the depth and total height.

Curiosity:

The bases and capitals on the market are of different types and materials.

For ease of processing, we recommend using those made of polystyrene.

For a greater guarantee of durability, however, we recommend using plaster ones.

Tools and materials:

• High quality corrugated cardboard

• 4x4 cover cloth

• Felt cloth

• Meter (measuring tape or folding wooden meter)

• 5 point laser and square

• Lead wire

• Construction pencil

• Felt tip pen

• Scissors for aluminum

• Punching tool

• Screwdriver drill with depth adjustment

• Professional cutter

• Hacksaw for plasterboard

• Wood saw

• Assembly glue

• Manual grinder

• Sandpaper

• Magnetic level with vials

• SDS drill bit 6x110

• SDS drill bit 8x110

• Professional spatula with insert

• Trowel 28x12

• Brush

• Bowl

•Ladder

• Half-column module in plasterboard

• Plasterboard capital module

• Basic plasterboard module

• Double sided tape

• Teks screws 4,2x13 flat head

• Black phosphated self-tapping screws with 3.5x25 nail tip

• Black phosphated self-tapping screws with 3.5x35 nail tip

• "upright" profiles in aluminum

• Specific grout

• Overlay

• Painting or finishing coating

• Steel expansion bolts with diameter 6.

ATTENTION: being this type of intervention very delicate, the advice is to contact a highly specialized company that can help you.

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