Interior painting

Interior painting

The type of coating materials is determined by the type of surface and its designated use. Thus, coating materials for dry premises are not appropriate for premises with high humidity.

Proper paint selection will ensure easy treatment of the painted surfaces and secure the coating durability.

Before painting the surfaces, make for all prep works specified in para. 1. Prep works. Estimate the types and quantities of the required materials, clean the surface, remove old coatings from painted substrates, smooth the surface, plaster cracks and prime the surface.

Mix paints and enamels before you start the works. If you mix with a drill, use a low speed mode. If the speed is high, the paint gets gassy and loses its decorative effect. Varnishes should wait for 15 minutes after mixing, to prevent air bubbles on the varnished surface.

In case of biological deterioration of surfaces and in premises with high humidity (bathrooms, kitchens, basements) or poorly ventilated premises, treat the surfaces with Kompozit® Antiseptic Masonry Prep.

Prime masonry surfaces with Kompozit® UNIVERSAL Acrylic Primer or Kompozit® Brilliant Acrylic Primer.

Use Kompozit® UNIVERSAL-BIO Acrylic Primer in premises with high humidity (bathrooms, kitchens, basements) or in poorly ventilated premises.

 

2.1. Painting of ceilings.

Mind that paints and especially enamels with rich gloss accentuate all surface defects and irregularities, while matt paints hide them. It is especially seen in big-size areas.

When you paint ceilings, do not forget to protect the floors covering them with a polyethylene film.

For previously painted and whitewashed ceilings, remove old coatings or whitewash. Remove whitewash with a spatula and metal brush and polish with sandpaper to plaster, then remove dust and prime; this done, the ceiling is ready for painting.

Painting process.

First, paint the hard-to-reach places with an angle roll or brush.

Start painting the ceiling from walls with windows and proceed in the incident direction of light. To paint ceilings, use long-pile rollers that heavily absorb the paint. Do not treat ceilings with dry rollers. Use more paint, which is to prevent the coating irregularity and visible lines left by the roller.

If paint only a half of the ceiling, let the paint dry, and then further paint, it may result in the joints made visible.

When painting big-size surfaces, mix the paints in a single container, to make the painted surface uniform and unicolor; paints should be of the same production line.

Mind there are premises with severe hygienic requirements like nurseries (kids rooms), hospitals, schools and other academic institutions, catering facilities. It is recommended to apply Kompozit® PRIME Interior Paint in such premises.

Paints and enamels for ceilings:

Name

Hall

Kitchen, lavatory

Residential rooms

INTERIOR 3 Paint

+

+

INTERIOR 5 Paint

+

+

INTERIOR 7 Paint

+

+

+

Premium Latex Interior Paint

+

+

+

PRIME Interior Paint

+

+

+

PROFI Acrylic Enamel

+

+

+

METALLIQ® Acrylic Enamel

+

+

+

Kompozit® Paint for Jambs

+

+

+

 

2.2. Painting of walls.

Painting process.

Protect the surfaces not subject to painting (switches, sockets, baseboards) with a masking tape.

First, paint the hard-to-reach places with an angle roll or a brush. The surface behind the heating radiators is better painted with long-handled rollers or brushes. The areas around switches and sockets are more comfortable to paint with a brush or a small-size roller. It is also wise to paint first a 5 cm line along the ceiling with a small-size roller, to prevent painting of the ceiling as you start working with a big-size roller.

Then, paint the big-size surfaces. Painting should be done in a window-to-door direction, in the incident direction of light. If you are right-handed, then start from the left corner; conversely, all the left-handed should start from the right one. The last roller move should be done from bottom to top – when doing like this, you push the roller more evenly and avoid a thicker paint layer at the bottom, and so the paint will be spread more uniformly.

If paint only a half of the wall, let the paint dry, and then further paint, it may result in the joints made visible.

To make the surface uniform, apply the second paint layer once the first one is dried.

Paints and enamels for walls:

Name

Hall

Kitchen, lavatory

Residential rooms

INTERIOR 5 Paint

+

+

INTERIOR 7 Paint

+

+

Premium Latex Interior Paint

+

+

+

PRIME Interior Paint

+

+

+

PROFI Acrylic Enamel

+

+

+

METALLIQ® Acrylic Enamel

+

+

+

DECO M130 Decorative Coating

+

+

+

Kompozit® Paint for Jambs

+

+

+

2.3. Plastering and structural paint application.

For plastering, it is recommended to use Kompozit® QUARTZ-GRUNT Adhesive Primer, which includes a marble filler known to enhance the adhesion, facilitate the application and decrease plaster losses.

Structural paints are used to make surfaces textured. Structural paints can also smooth light surface defects.

This type of paints should be applied one-layered. The decoration techniques are solely limited by your fancy. For decoration, you may use spatulas, brushes, structural rollers, stencils and other working tools. The surface gets the desired structure right after its application, within open time. During every application, paint only the piece of the surface, which you are able to structure within the time it is still wet.

Name

Basement/ Construction joints

Façade

Indoor premises

Acryl Plast 15 Stone Plaster

+

+

Acryl Plast 20 Stone Plaster

+

+

ELASTOMER 15 Stone Elastomeric Plaster

+

+

+

STRUCTURE S130 (Structural/Textured) Paint

+

+

 

2.4. Painting of wooden surfaces.

If a wooden surface has changed its initial look or got dark, treat it with Kompozit® W1 Whitener for Wood.

Remove resin, or else it can go through the paint and thus decrease the adhesion of paint and wood.

In humid and/or poorly ventilated premises, first protect the wood with Kompozit® W2 All-Around Antiseptic.

Painting process.

 

Do not use ordinary detergents to clean wooden surfaces, as they produce the film that affects adversely the adhesion of wood and coating materials.

Polish the surface with sandpaper.

If required, fill cracks with putty, but mind that putty tends to shrink, and so you will probably need to repeat this manipulation several times.

If you are to varnish the wood, make it wet for a better result – this makes the wood grain loose. After the wood is dried, polish it with sandpaper, remove dust – and varnish. For a smoother and stronger surface, it is recommended to polish the wood after the first layer of varnish is dried and the second one is not yet applied. Do not use the painted/varnished object extensively before the surface is critically solid.

To paint doors, windows and furniture, use the coating materials with anti-blocking effect, which prevents the adjacent surfaces from being blocked.

Anti-blocking effect is available in the following materials:

AQUA WOOD Furniture Varnish, PROFI Acrylic Enamel, AQUA PARQUET Varnish.

Paints, enamels and varnishes applicable to wooden surfaces:

PROFI Acrylic Enamel

METALLIQ® Acrylic Enamel

Kompozit® PF-115 Enamel

Kompozit® PF-266 Flooring Enamel

Kompozit® Alkyd Snow-White Enamel

PRIME® Interior Paint

Kompozit® Parquet Polyurethane Varnish

Kompozit® Yacht Polyurethane Varnish

Kompozit® AQUA INTERIOR Varnish

AQUA WOOD Furniture Varnish

AQUA PARQUET Varnish.

 

2.5. Painting of floors.

Treat the wooden floors, especially in poorly ventilated and/or humid premises, with the wood protector – Kompozit® W2 All-Around Antiseptic. It is recommended to pay special attention to the floorboard underneath.

If a wooden surface has changed its initial look (discolored to grey), treat it with Kompozit® W1 Whitener for Wood.

Coating materials should wait for 15 minutes after mixing (which is a must before applying), to prevent air bubbles on the painted surface, which deteriorate the coating quality and affect adversely its look.

Do not mix the paint with a drill at a high speed.

To paint big-size surfaces, mix the paints in a single container, to make the surface uniform and unicolor.

Avoid draughts.

If paint only a half of the floor, let the paint dry, and then further paint, it may result in the joints made visible.

Unpainted wooden surface.

Polish the surface with sandpaper. Remove resin. Fill cracks with putty. After the putty is dried, polish the surface again with sandpaper and remove dust.

Previously painted wooden surface.

Remove old coating with Kompozit® Paint Remover. Remove the peeled-off paint with a scratch tool and polish the surface until it is matt.

Unpainted masonry (for example, concrete) surface.

Concrete surface should wait for at least 1 month before painting. The concrete humidity should be under 8%. Humidity is measured with a moisture meter. Should you have none, take a polyethylene film and bond it closely to the surface for 24 hours. Should there be any condensation under the film after 24 hours, this surface cannot be painted.

Prime the surface with Kompozit® STRONG Primer.

Under heavy mechanical loads (for example, lift truck operations), Kompozit® AK-11 Paint for Concrete Flooring is recommended.

Coating materials for wooden floors:

Kompozit® PF-266 Flooring Enamel

Kompozit® Parquet Polyurethane Varnish

AQUA PARQUET Varnish.

Coating materials for masonry and stone floors:

Kompozit® AK-11 Paint for Concrete Flooring

Kompozit® STRONG Primer.

 

2.6. Useful tips to work with coating materials.

 

Surface preparation.

Poor surface preparation decreases the coating durability and affects adversely the surface look.

Requirements to work with coating materials.

Most appropriate conditions: the temperature of coating materials, air and surfaces should vary between +5C and +35C; air humidity under 80%; humidity of masonry surfaces subject for painting under 8%.

When working with solvent-borne coating materials, have the premises ventilated, but avoid draughts.

Do not force the drying of coating materials. Because of the too fast drying, the paint will not be able to get spread evenly, which will prevent the surface from being uniform, as well as result in the lost gloss, and the surface will lack solidity.

Use safety facilities to protect yourself.

Protect the still-wet surface against dust and draughts.

Use a masking tape.

Remove the tape immediately after painting. If remove it after the paint is dried, you can damage the coating.

Priming.

Required. Priming is critical to heavily absorbing and weak substrates.

Tinting.

If you do not find the available colors of your paints appropriate, you can always tint the paint as you wish. If the color in the can is slightly different from the catalog one, do not worry, because after drying, the paint will acquire the selected color. Mind that the light in the premises hugely affects the visual color perception.

Paint estimation.

You can estimate the paint quantity using a calculator at кompozit.ua

From top to bottom.

Start painting the ceiling first, then proceed to the walls and finally paint the floor.

Working tool treatment.

Wash the working tools immediately after works, while the paint is still fresh. During breaks, wrap your rollers with polyethylene to prevent their drying.

2.7. Possible problems during works with coating materials.

 

  1. Blocking of freshly painted surfaces.

Reason:

Coating materials with no anti-blocking effect were used for doors and windows.

A door or window was closed before the coating materials got dried completely.

 

  1. Cracking and peel-off.

Reason:

The paint is diluted too much, or it was applied too thick.

Poor surface preparation – for example, the surface was not primed.

High strength capacities of paint make the film more solid yet less elastic, which eventually may lead to cracking.

 

  1. Air bubbles and pits in paint.

Reason:

After paint and varnish were mixed, the mixture was not left to wait. As a result, air bubbles remained in the coating materials.

Paint was applied too fast (especially with a roller).

Paint was rubbed on the surface with a roller or brush.

Finishing paint is applied to a porous surface without prep works.

 

  1. Poor coverage.

Reason:

Paint is diluted too much.

Surface is not prepared.

Paint is applied thinner than required by the manufacturer.

The old paint layer is darker than the new one.

 

  1. Soft paint (objects leave their prints on it) and poor abrasion resistance.

Reason:

Cleaning and use of painted surfaces are initiated before the paint is dry completely.

 

  1. Visible joints and gloss difference (tint variance is observable).

Reason:

The same surface (visually inseparable) was painted with breaks.

Coating materials were all from different production lines, with no prior mixing.

Paint was applied unevenly.

 

  1. Mildew.

Reason:

Inadequate ventilation of premises.

Unprepared surface (not treated with care facilities).

  1. Lines left by rollers or brushes.

Reason:

Low-quality roller with uneven pile.

Inadequate selection of working tools. For example, the ceiling was painted with a felt roller.

Roller with fragments of old paint on it was used.

Inadequate working process (paint was rubbed on the surface; roller was moved in different directions).

 

  1. Paint splashes, paint runs on vertical surfaces.

Reason:

Paint is applied too thick.

Painting is done under too high humidity and at a low temperature. Paint was drying too long.

Paint was diluted too much.

  1. Paint wrinkling.

Reason:

Paint is applied too thick.

Painting is done at a too high temperature. The upper paint layer is already dry, while the lower one is still wet.