How to calculate the area of a house for painting?
When decorating a house, calculating the amount of paint is a key aspect. Accurate calculation of wall area not only avoids material waste, but also saves costs. This article will introduce in detail how to calculate the paint area and provide structured data to help you quickly master the method.
1. Calculation method of wall area
The amount of paint is usually calculated based on the wall area. The following are the specific steps:
1.Measure room dimensions: Use a tape measure to measure the length, width, and height of the room in meters (m).
2.Calculate the area of four walls:The formula is(Length + Width) × 2 × Height.
3.Deduct door and window area: Measure the length and width of doors and windows, calculate their area and deduct it from the total wall area.
4.ceiling area(If painted): Length × Width.
Example: A room is 5 meters long, 4 meters wide, and 3 meters high, with one door (2m²) and one window (1.5m²). The wall area is:
| Project | Calculation formula | Result (m²) |
|---|---|---|
| area of four walls | (5 + 4) × 2 × 3 | 54 |
| Deduct doors and windows | 54 - (2 + 1.5) | 50.5 |
| ceiling area | 5 × 4 | 20 |
| total area | 50.5 + 20 | 70.5 |
2. Estimation of paint usage
The coverage of the paint is usually stated in the product description, which is generally 6-8 square meters per liter (single coat). The calculation formula is:
Paint usage (liters) = total area ÷ paint coverage × number of coats
Assuming that the paint coverage rate is 7m²/liter and the paint is applied 2 times, the amount of paint required for the above room is:
| Project | Calculation formula | Result (L) |
|---|---|---|
| Single pass dosage | 70.5÷7 | 10.07 |
| Dosage twice | 10.07 × 2 | 20.14 |
3. Recommended popular paint brands (hot search data in the past 10 days)
According to the search data on the entire Internet, the following are the recently popular paint brands and their characteristics:
| Brand | Features | Hot search index |
|---|---|---|
| Nippon Paint | Environmentally friendly, non-toxic, colorful | ★★★★★ |
| Dulux | Strong stain resistance and high durability | ★★★★☆ |
| three trees | Domestic, cost-effective, green certified | ★★★☆☆ |
| China Resources Paint | Easy to construct and strong covering power | ★★★☆☆ |
4. Precautions
1.actual loss: It is recommended to purchase 10% more paint to avoid shortage caused by construction loss.
2.Different material processing: Putty walls and gypsum board walls have different water absorption, so the amount of paint needs to be adjusted.
3.Color selection: Dark paint has lower coverage and may require 1-2 more coats.
Through the above methods and data, you can easily calculate the amount of paint and be fully prepared for the decoration project. For further assistance, consult a professional coatings supplier or construction team.
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