This 100 m poly brick line is a length of braided polypropylene cord designed to give a straight, visible reference when laying bricks, blocks, stone or paving. Its primary use is for setting out and maintaining level courses in masonry work: snap the line between pins or blocks to mark a true horizontal or vertical guide for bricklayers, blocklayers and landscapers.

The line is manufactured from UV-stabilised polypropylene (PP) homopolymer with a smooth braided finish to resist abrasion and repel water. Typical nominal diameter is in the trade range for brick line (suitable for use with standard line blocks and pins); the material is low-stretch to preserve sight lines and is supplied wound on a 100 m reel for continuous working. Material properties are tested in accordance with ISO 527 tensile testing practices and the product is produced under a BS EN ISO 9001 quality management system. Thread, head and drive types are not applicable to this product.

Bricklayers, builders, landscapers and DIYers use poly brick line across construction, renovation and garden projects. Typical applications include stretcher courses, setting out garden walls, aligning patio and paving units, checking plumb and establishing levels for damp-proof courses. The line is compatible with industry-standard line blocks, pins, pegs and line handles, and knots reliably for temporary fixes or longer runs where a fixed guide is needed.

Key benefits include inherent corrosion resistance (polypropylene does not rust or rot), good tensile strength with low elongation under load so sight lines remain true, and resistance to oil, most chemicals and moisture which prolongs service life on site. The smooth braided finish reduces wear against sharp edges and allows easy snapping for chalk lines when required.

Duchy Fasteners stocks this product as 100 m reels and supplies associated accessories such as line blocks, pins and handles. We also hold alternate lengths and colours for trade and DIY customers; please contact us for current stock sizes and trade pack options.