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Painting interior rooms

Preparations

Preparation of the subsurface

Damaged areas in the plaster must be repaired prior to painting or other work on the wall. Using a flat chisel, remove loosened plaster and a further, small area around the damaged section.
Remove any dust and plaster using a hand brush. Then dampen the area with water.
Now apply a filling compound. For deeper areas of damage, the filling compound should be filled in several layers. Allow to dry for approximately one hour each.
Once the last layer has been applied, the surface of the filling compound can be evened off using a bar. Prior to the final hardening of the compound, you can dampen it slightly again and even it off using a trowel.

Then prime the filled area and untreated plaster prior to application of the paint. Otherwise the paint may crack once it has dried.

Tip:

Test the subsurface absorbability using a damp sponge. If the area discolours and goes dark, priming is necessary. Chalky subsurfaces and old coats of paint must be first be completely washed off and primed.

Required paint quantities

The simplest method of determining your paint requirements is to divide the walls into rectangular segments.

Segment Width in m Height in m Area in m2, rounded
A 1.0 2.5 2.5
B 0.8 1.5 1.2
C 0.8 2.5 2.0
D 1.0 0.5 0.5
E 0.4 2.5 1.0
F 1.5 2.5 3.8
G 1.4 0.4 0.6
H 1.4 0.8 1.1
 
Total area 12.7

Determining the paint requirements

Using the calculated area, it is easy to determine the appropriate packaging size required. The area which can be painted using the wall paint is printed on every bucket of paint. This ensures that you will have sufficient paint during your work, and that no unnecessarily large remainders will be left over. The required colour quantity is dependent on the quality of the subsurface. Non-adsorbent, smooth subsurfaces tend to require less paint than adsorbent or structured subsurfaces.

Tip:

Keep a remainder of shaded paints in a closed container for later repair work.

Process and colour effects

Working steps

Prior to starting work, cover all radiators and pieces of furniture with covering sheets. Edge window and door frames with crepe tape to protect them against larger splashes of paint.
If different colours are used, edge the appropriate colour transitions with crepe tape.
Wall paints are white, and the appropriate colour shade is added to them.
Emulsion paints generally tend to spray a lot, and are easy to work with.
Start by painting the ceiling. Always work from the light source (window).
Then paint the walls, also starting from the window side.

Tip:

Paint in "crosshatches". Roll 2 to 3 strips evenly down from top to bottom. Then distribute the paint crossways. Finally, roll down again from the top.

The effects of colour in interiors

With targeted use of colour, room dimensions can be optically modified.

When using light, cool colours, small rooms become wider and look larger.
With warm and intensive colours, large rooms look full of light and friendly.
High rooms (in older buildings) appear lower if the ceiling is painted darker than the walls.
In low rooms, the ceiling should be painted in a lighter shade than the walls.
Irritating corners and chimney projections are less visible if they are painted in the same colour as the walls.
However, if such details should be accentuated, this can be achieved using powerful colours which clearly contrast with the wall colour.

Tools

Cover sheeting
Tinting paint
Interior wall paint
Telescopic rod
Paint scraper
Short pile roller
Small paint roller for emulsion paints
Crepe tape
Flat brush
Radiator brush