Before the decoration, you should understand the basic knowledge of decoration materials and construction supervision. The settlement work after the decoration can't be sloppy. Otherwise, the money you saved in the previous purchase will be easily erased by the high cost. . Below, we will ask the industry to tell us what needs to be paid attention to when the decoration is settled. Check the project and do a good job of retesting The first step in settlement is to review and verify the project according to the renovation contract signed by both parties. Because during the renovation process, the owner and the construction party will increase or decrease or change some projects according to the actual situation, some of which are originally considered to be inconsistent or deliberately missed, and some are added by the owner to propose new requirements, no matter which one The situation is beyond the provisions of the original contract, so it is necessary to check the actual construction project, to prevent the project from repeated billing or deductions without deduction of fees. After verifying the increase or decrease of the project, we will retest the actual amount of construction. Because some projects can measure the exact amount of construction before starting construction, projects such as water circuit reconstruction can only estimate a rough value before construction, and accurate construction can only be measured after construction is completed. In addition, additions or changes outside the contract also require re-measurement and billing. Prevent false report construction When the owner reviews the renovation bill, it does not understand the calculation rules of the engineering quantity, which makes some unscrupulous decoration companies or road "guerrillas" have opportunities. They take the false report construction amount, and set more items to repeat the pricing and other means. Here is a little more, there is a little more, and the cost will be much higher. Among them, latex paints, styling ceilings, cabinets, decorative surfaces, etc. are all items that are prone to false report construction. As the owner, it is necessary to understand the calculation rules of the construction quantity. When reviewing the settlement statement, the decoration company or the construction team must be required to provide detailed measurement data and calculation method of the construction quantity, check with the design drawing, and if necessary, go with the construction party. On-site measurement check to determine the price of each item. Prevent quotes from "low opening and high walking" The problem of “low opening and high walking†generally exists in small decoration companies or “guerrillasâ€. In order to attract owners to sign, they will make a set of low budget total quotations, but the construction volume is often set lower, and even some There is an intentional deduction, so the total price seems to be cost-effective. However, when the construction is completed, the person in charge of the decoration team will tell the owner that the construction area has increased, and there is still a project to be done. For the inexperienced owners, they will feel that the construction team has actually done a lot of work, and will fill in the cost according to the price of the contract, even if it feels wrong, it can only be unlucky. The easiest project to “open low and go high†is the hydropower transformation project, most of which are pre-collected with a portion of the money, and the settlement is based on the actual amount of work. In order to prevent "low opening and high walking", the owner must fully control the construction details, and do not leave too much "free play" space for the construction party. Material changes need to be calculated clearly In the decoration process, the decoration materials in the budget will change due to various reasons. In the final settlement, the factors of material change must be calculated clearly. There are two changes to the decoration materials. The first one is the material change caused by the owner's own replacement of the brand or type of material; the second is due to design changes, which may include the feasibility of design and production, and the designer temporarily changes Material, etc. At the time of settlement, the newly generated expenses must be issued by the constructor with detailed data and documents, and the cost of the unproduced items should be reduced to avoid repeated billing. Prevent the exchange of billing methods Generally speaking, the owner pays more attention to the unit price in the quotation, but does not pay much attention to the way of quotation. Different quotation methods lead to a large deviation of the quotation number. The owner will only find that the difference between the expected cost and the expected cost is large. . How to calculate the cost of various construction areas The area of ​​the wall area paint, wallpaper, soft pack, and siding is multiplied by the length and the unit is calculated in square meters. The length is calculated according to the net length of the main wall; the height: the person without the wall skirt counts from the indoor floor to the bottom of the floor, the wall skirt is calculated from the apex of the wall skirt to the bottom of the slab; the ceiling canopy is counted from the indoor floor (or the apex of the wall skirt) to the underside of the ceiling Add 0.2 meters along the edge. The area occupied by doors and windows should be deducted (1/2), but the skirting line, hanging mirror line, the area of ​​the hole with a single area of ​​0.3 m2 and the area where the beam head and the wall are handed over are not deducted. When affixing stone and wall tiles, the area of ​​the installed skirting board is calculated according to the square meter of the actual paving area, and the unit is meter. The decorative materials of the ceiling area (including the beam) generally include paint, ceiling, corner line (decorative corner flower) and lighting ceiling. The area of ​​ceiling construction is calculated as “square meter†according to the net area between the wall and the wall, without deducting the area occupied by the partition wall, the column passing through the ceiling, the raft and the wall-mounted chimney. The length of the top corner line is calculated as "meter" according to the net perimeter of the interior wall of the house. The decorative materials on the floor area generally include: wooden floors, floor tiles (or stone), carpets, stair steps and handrails. The floor area is calculated as “square meter†according to the net area between the wall and the wall, without deducting the area occupied by the partition wall, the column passing through the ground, the raft and the wall-mounted chimney. The area of ​​the stair step is calculated as “square meter†according to the actual unfolded area, and the area occupied by stairwells with a width of less than 0.3 m is not deducted; the length of stair railings and railings can be multiplied by the full horizontal projection length (excluding the inner wall part). Calculated by the coefficient 1.15 in "extended meters". Concerned about surprises Label: Cautious: Home improvement to prevent quotation "low open high" stealing billing Previous: How to routinely maintain and clean Cummins generator sets? 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Take the wardrobe made in the field as an example, there is a quotation based on the projected area, and there is a quotation based on the expanded area. Although the price is per square meter, no matter which price is quoted, the overall cost is similar. However, the price per square meter of the expanded area of ​​the wardrobe is much lower than the projected area. If the construction party contracts according to the projected area The quotation, when calculating the construction area according to the expanded area at the time of settlement, will overcharge the owner a lot of money. 
Be cautious: home improvement prevents quotation from “low opening and high walkingâ€