I. Basic Definition
Q: What is a windowsill line?
A: The windowsill line is an exterior decorative line installed at the bottom of the window. It serves the functions of waterproofing, drainage, covering edges, and aesthetic shaping. It is usually an EPS foam + mortar finished component.
Q: What is the difference between a windowsill line and a window header line?
A: Windowsill line: Below the window
Window header line: Above the window (window top line)
II. Specifications and Styles
Q: What are the standard widths and overhangs for windowsill lines?
A: Standard overhangs are 60-150mm, and heights are 30-80mm. European styles, simple straight lines, and curved shapes can be customized according to the exterior wall style.
Q: Should a drip line be installed on the windowsill?
A: It must be done. A drip groove should be made at the bottom to prevent rainwater from flowing down the wall and staining the exterior paint.
III. Installation and Construction
Q: How is the windowsill line installed and fixed?
A: Adhesion + Anchoring: Bonded with special adhesive mortar. Large sizes are additionally secured with expansion anchors. Seams are sealed with weather-resistant sealant.
Q: What should the installation slope of the windowsill line be?
A: Exterior low, interior high, with a 2%-3% drainage slope to prevent rainwater from backing up into the windowsill.
Q: How are corners and window edge finishes handled?
A: 45° splicing for internal and external corners, with flat joints. The entire surface is meshed for crack resistance, then plastered and painted.
IV. Material and Durability
Q: Are EPS windowsill lines durable? Will they crack or fall off?
A: Standard finished EPS + crack-resistant mortar, properly installed, weather-resistant, crack-resistant, and will not fall off, with a service life synchronized with exterior wall insulation.
Q: Can it be used for self-built houses/community renovations?
A: Universal compatibility: Suitable for villas, self-built houses, exterior wall renovations of commercial housing, and exterior walls of office buildings.
V. Quotation and Customization
Q: How are windowsill lines priced?
A: Quotations are usually per meter. Complex shapes, irregular shapes, and thickened/widened dimensions will incur additional charges.
Q: Can custom sizes and styles be ordered?
A: Supports customization of any size, curvature, and carved patterns. Can be matched with architectural drawings for sampling and production.