Before deciding on which paint to choose for your bedroom, you should consider paint gloss level, also known as sheen.
A highly porous plane will absorb additional paint and impact on how much paint you need. To find total area, find the perimeter by adding the length of each wall then multiply the perimeter by height. For instance, an average guest room can have a wall diameter of 16 metres and 3 metres height. The number of doors and windows is one each. Allocate 2 square metres for the door and 1.5 square metre for the window. Total paintable area will be: 16 x 3 = 48 2 + 1.5= 3.5 Therefore, total area = 48 - 3.5 44.5 square metres. Generally, 1L paint covers 6.5 square metres. The required paint quantity will be, 44.5/6.5 = 6.846 litres. For this case, buy 7 litres to cater for retouching if there will be any. If you need to apply two coats, then you need to buy 14 litres.
Different manufacturers pack and sell paint in different quantities - from as low as 500ml to as high as 20L.
One of the most common sizes is the 5L. The size painted will depend on porosity and the number of coats needed. If the surface is highly porous it will require more paint. More number of coats means more paint. In turn, the 5 litres will only cover a small space.The type and the brand will also affect the spread of the 5 litres. Different type and brands have different spreads. Some will cover a large surface while others will cover a small surface. Also, the nature of the painting will dictate the area covered. If it's the first time painting, then it will require more paint hence the 5 litres will only cover a small space. However, if the wall is being repainted, then less paint is needed and more surface will be covered. On this account, the surface covered by 5 litres can be found by:
If 1L covers 6.5sqm then 5 litres will be 5 x 6.5 = 32.5 square metres.
To find out the quantity of paint you need for a 12 by 12 ft room, you need to find out the total paintable area. The ceiling standard height is nine feet. To find the total wall size, take the perimeter times the height. Perimeter is found by adding the length of the walls. In this case perimeter will be 12+12+12+12=48ft. Total surface area will be 48 x 9=432 square feet. Generally, one gallon has an estimated coverage of 400 square feet. What about 432 square feet? In this case, we divide 432 by 400. So 432/400 =1.08 gallons. If two coats are required, then you will have to buy 2.16 gallons.
Before deciding on which paint to choose for your bedroom, you should consider paint gloss level also known as sheen. A more shiny wall is as a result of high gloss which means how much light is reflected in the paint. Paints with high gloss will generally reflect lots of light as compared to paints with less gloss. There are different types of sheens that are almost suitable for all rooms. Flat sheen paints are more suitable for bedrooms since such rooms experience less traffic. Flat sheens are perfect for hiding wall imperfections and suitable for diffusing light. It is most suitable in new buildings and ceilings. Flat sheens indirectly reflect light which tends to hide any wall imperfections.
The coverage of the 4L will be highly decided by the wall condition.
With trim paint mainly used for doors, windows and surface undercoat, you will be able to cover 16 square metres per litre.