Indy Total Construction

Although a wood-framed partition is easy to build, it does not provide the most effective sound insulation and it will need extra strengthening if it is to carry shelves or cabinets. In situations such as this, a partition built from lightweight concrete blocks is much more suitable. However, you cannot build such a partition on an upper floor, since even a reinforced concrete floor is unlikely to be strong enough to carry the load of a concrete block partition. A concrete first floor makes an ideal foundation and even a suspended wood first floor will do if a full-width wood sole plate is put down first, but check with your local Code.

Before starting work, the floor, walls and ceiling should be stripped of all coverings and any coving and base cut away with a chisel to clear the blocks. The easiest way to mark the position of the partition is

with a chalked plumbline, snapping it against the floor to leave two parallel chalk lines the width of the blocks. Continue these lines up the walls and across the ceiling making sure they are vertical.

For strength, it is best to tie the partition to adjacent walls by cutting recesses in them to accept the end blocks of alternate courses or similarly by using galvanized metal ties screwed to the walls and buried in the blockwork mortar joints. Nailing a guide batten to the wall against one of the chalk lines is also a good idea to help with the alignment.

Trowel a 6in wide layer of mortar (1 part masonry cement: 6 parts soft sand) across the floor to span the chalk lines on it, leveling it out to about 1/2 an inch thick. Then scribe a guide line through the mortar in line with the chalk marks on the end walls, using the point of your trowel and a long straight-edged plank.

There are many different types of concrete block to choose from, but the best types for building an internal partition are known as aerated blocks (A).

These are light in weight, so they are easy to handle — an important quality since they are twice the size of a normal brick. This fact also means that you can build a full-height partition relatively quickly. You can drill them, knock nails into them or, using a general-purpose saw, cut channels in them (B) to conceal electric cables and pipe work. Sound will not pass through them as easily as it would a woodframed partition, nor will heat.

Aerated blocks should be laid in the same manner as bricks in a “stretcher” bond pattern with mortar joints. Their normal size is 17 x 81/2 x 4in. For finishing, you can either plaster them directly or nail on battens and fix a gypsum board cladding to the battens.

Walls are the first thing anyone entering your home will see. They should be kept clean and in good repair.

There are many ways to finish walls. Probably the most common is painting. Paint preserves and beautifies many objects. It protects metal from rust, wood from mildew and plastics from sun damage. Paint also makes them easier to clean.

There are many types of wall coverings. Paper, plastics, and fabrics are some. Wall coverings can be prepasted and pretrimmed. Some are washable; and some are even treated for easy removal at a later date.

Paneling is easy to care for, and there are many different types to choose from.

Whatever type of wall finish you use, the job should be clean and neat. You should also know some of the chemistry of the materials and surfaces you are working with—what will mix and what may explode.

Painters will always have work. Even if the perfect paint—one that never wears out—is discovered, there will always be someone who doesn’t like the color!

Drywall is soft. It is best held in place with large headed drywall nails, screws or staples.

To prevent nails and seams from showing, nails are dented into the walls. The dents are then filled with drywall cement. Then you cover the seams with drywall tape and plaster over with drywall cement.

Finishing drywall seams. Apply compound over the seams and nail impressions. Work the tape into this compound. Smooth over, allow to dry, and sand.

In many modern houses, interiors are finished with drywall. Drywall normally comes in sheets, 4′ x 8′, 4′ x 10′, or 4′ x 12′. It is usually 5/16, 3/8, 1/2 or 5/8 inch thick. The most common size is 3/8 inch thick 4′ x 8′.

Drywall sheets are nailed to the house joists with large headed nails, screws, or staples. Nails are driven so that a small dent is made in the drywall. This depression is then filled with a type of cement and covered over with tape

There are three basic ways to finish drywall:

• Painting

• Wallpapering

• Paneling

You may apply paint directly to drywall. New drywall usually takes two coats: one to seal it and one to present an even, finished surface.

Wallpaper is becoming popular again. It comes in rolls and is applied directly to the drywall. Before it will stick, the drywall must be prepared with a glue-like coating of sizing. The trick in applying wallpaper is to avoid bubbles and match the edges and the pattern precisely.

Paneling is glued or nailed directly onto the drywall. Panels may be veneer, wallboard, imitation masonry, or some other material.

Moldings and baseboards finish off walls and ceilings. In older homes they are always made of wood. Most new molding and baseboard is made of synthetic materials which are more flexible and less likely to crack when nailed into place.

Every trade or craft has its own safety rules. Safety rules are simply common sense. They are intended to keep people from hurting themselves. Because home maintenance and repair people work with many different types of tools and materials, they need to know how to prevent accidents more than anyone else. Always remember:

• Tools will cut, stab, or hurt people only if they are handled carelessly

• Power tools must always be turned off when not in use

• Tools not in use should be put away

• Tools in bad condition may cause accidents

• Electricity is invisible. Assume it is present in every wire unless you have turned it off yourself and checked to make sure it is off

• Strange odors from chemicals or paint can injure and kill people

• Many cleaners and paint thinners will explode if exposed to fire or extreme heat

• Goggles protect eyes from chips thrown by tools

• Open flames must be turned off when not in use

• Neatness prevents accidents of all kinds

A number of tools are necessary for good repair work. Proper use of tools makes the work neater and more professional looking. Improper use of tools causes more accidents and injuries than any other kind of carelessness.

The basic safety rules for using any hand tools are:

• Use the right tool for the job

• Never. use dull cutting tools

• Keep/tools repaired

• Turn off electrical tools when not in use

• Make sure work being drilled or cut is properly clamped

Safety equipment such as goggles for eye protection and insulated gloves for working with hot objects like soldered tubing should be kept handy.

The most important safety rule to remember is to use common sense and think ahead. Don’t unscrew a water pipe unless the water pressure is turned off. Cold water may ruin the house. Hot water may ruin you. Gas pipes are even more dangerous.

Keep in mind that a saw that will cut a four by four oak post can also cut off a finger. Flames used to melt lead will cook a careless hand. Something that dissolves paint may also dissolve skin!