Grettz Hub
Best Laser Level for Tiling in 2026 — A Tiler's Guide
Six rows up a bathroom wall and the joint lines have drifted off level — that job went wrong at setting out, not at fixing. Here's the honest guide to the best laser level for tiling in 2026, from a £59 cross-line to a full 4D layout tool.
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Best Laser Level for Groundworks and Civils
How to choose a laser level that stands up to groundworks and civils — the specs that matter outdoors, and which Grettz rotary laser fits your work.
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How to Set Falls for Drainage With a Rotary Laser
A practical guide to setting accurate drainage falls with a rotary laser, covering gradient calculations, the dual-grade method and the staff-and-receiver method.
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Laser Level Accuracy Explained: What ±mm/m Really Means
What laser level accuracy figures like ±2mm at 10m actually mean on site, how error grows with distance, and how to make sure your laser is still hitting spec.
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How to Level a Concrete Floor With a Laser Level
A practical step-by-step guide to checking levels, setting a datum and pouring or screeding a concrete floor flat using a rotary laser level.
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How to Read a Levelling Staff: A Beginner's Guide
The E-pattern on a levelling staff looks confusing at first but is simple once it clicks. Here's how to read metres, centimetres and millimetres at a glance.
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What Is a Dual-Grade Rotary Laser? Slope and Fall Explained
Dual-grade rotary lasers project a set gradient, not just a flat plane — essential for drainage falls, ramps and driveways. Here's how they work.
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How to Set a Datum Point on Site With a Laser Level
A datum is the single reference height every level on site is measured from. Here's how to establish one properly with a rotary laser and staff.
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Best Laser Level for Bricklaying and Blockwork
Stringline still rules the bed joint, but a laser transforms how you set out and check courses. Here's how bricklayers use lasers — and which to pick.
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Red Beam vs Green Beam Lasers: Which Should You Choose?
Green beams look brighter, red beams run longer and cost less. Here's how to choose the right laser colour for your trade and working conditions.
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How to Use a Rotary Laser Level: A Step-by-Step Guide for Site
A practical, step-by-step guide to setting up and using a rotary laser level on site — from levelling the tripod to reading grade with a receiver.
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How to Set Out a Foundation With a Rotary Laser
Setting out a foundation with a rotary laser is the most important hour of any build. This is the practical, no-waffle UK trade guide — from tripod placement to FFL datums, corner readings, dig levels and common mistakes to avoid.
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