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Practical guides, maintenance tips and product news for airless spraying. New articles are added over time — explore by category or search below.
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Maintenance4 min readAirless Sprayer Filters Explained: Suction, Pump and Gun Filters
Airless sprayers rely on three progressively finer filters to keep pumps and tips clean, and matching mesh size to material is the key to trouble-free spraying.
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Airless Spray Tip & Filter Guide: Match the Tip, Filter and Material
How airless filters and spray tips work together, why mesh and orifice size have to match the material, and a practical workflow for choosing the right combination for stains, enamels, wall paint and heavy coatings.
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Airless Paint Sprayer Hose Guide: Diameter, Length and Pressure Loss Explained
Why airless hose diameter and length change your spray result, how pressure loss builds over long runs, when to step up from 1/4 to 3/8 or 1/2 inch, and how to join hoses and choose fittings safely.
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Airless Spray Pressure and Pattern Adjustment: How to Dial In a Clean Fan
Pressure decides whether an airless coat looks professional or patchy. Learn to read the spray pattern, set the lowest effective pressure, eliminate tails, and recognise when the tip or material — not pressure — is at fault.
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Correct Airless Spraying Technique: Distance, Angle, Speed and Overlap
Once pressure and tip are right, the finish comes down to how you move the gun. A practical guide to the four fundamentals — distance, angle, stroke speed and 50% overlap — plus triggering and edge banding.
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When to Replace an Airless Spray Tip: Recognising Tip Wear Before It Costs You
The spray tip is the cheapest part of an airless system and the one that quietly costs the most when worn. How tips wear, the warning signs, why your coating decides tip life, and when to replace.
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Airless vs Roller vs Brush: Which Painting Method Is Best?
Speed, finish, paint consumption and labour cost all shift depending on how you apply the coating. Here is an honest, side-by-side comparison of airless spraying, rolling and brushing so you can match the method to the job.
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How to Reduce Overspray When Using an Airless Paint Sprayer
Overspray wastes paint, contaminates surroundings and slows the job. This guide covers the professional techniques that actually cut it: pressure, tip selection, distance, overlap, masking, weather, spray angle and gun movement - plus the mistakes to avoid.
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Airless Paint Sprayer Troubleshooting Guide: Common Problems and How to Fix Them
When an airless sprayer stops behaving, the cause is usually simple and fixable on site. This guide walks through the most common faults - from a pump that will not prime to a gun that will not stop spraying - with the likely causes and how to put each one right.
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Filler machine guide: machine-applied filling explained
How to choose a filler machine: technology, flow rate, tips, costs and when machine filling pays off — with practical examples and the GROG F4L.
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Plaster sprayer guide: spray plaster instead of rolling
Plaster sprayer guide: which unit for interior plaster and facades, plaster types, flow rate and tip choice — with a practical comparison and GROG units.
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Painting facades with airless: faster and more even
Painting facades with airless: why it is faster and more economical, which tip and unit to use, plus preparation, common mistakes and FAQ.
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Choosing airless tips: which tip for which paint?
How to choose an airless tip: the numbering system (517, 519, 521), orifice, fan width, pressure and a material-by-material tip table — plus the right GROG units.
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Airless Sprayer Maintenance Checklist – Daily, Weekly and Long-Term Care
A practical airless sprayer maintenance checklist: daily, weekly and long-term care, cleaning after paint, primer and filler, filter and tip care, pump preservation, storage and troubleshooting.
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Best Airless Sprayer for Putty and Plaster in 2026
Looking for the best airless sprayer for putty and plaster? Discover how to choose the right machine for professional wall finishing and high-performance spraying.
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Airless Sprayer Maintenance: How to Keep Your Machine in Top Condition
Proper maintenance of your airless sprayer is essential for long service life, consistent performance, and avoiding costly repairs. Follow these simple steps after every use and your GROG machine w…
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How to Spray Plaster with an Airless Machine: Step-by-Step Guide
Spraying plaster with an airless machine is significantly faster than manual application and delivers a more consistent finish. However, it requires the right equipment, correct material preparatio…
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Electric vs Petrol Airless Sprayers: Which One Do You Need?
When choosing an airless sprayer, one of the most important decisions is whether to go electric or petrol-powered. Both types have clear advantages depending on your working environment and project…
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How to Choose an Airless Paint Sprayer: Complete Buyer's Guide
Choosing the right airless paint sprayer can make the difference between a professional finish and a frustrating experience. With so many models available, it is important to understand the key spe…
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What is Airless Spraying? Complete Guide for Professionals
Airless spraying is one of the most efficient methods for applying paint, primer, plaster, and other coatings in professional construction and renovation work. Unlike traditional spray guns that us…
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