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How To Roof Spray Painting With Airless Paint Sprayer


Painting a roof can be a big task, especially for large commercial or industrial buildings with expansive roof surfaces. Among the various tools available, an airless paint sprayer stands out as one of the most efficient and effective options for tackling this project.


Why Use an Airless Sprayer for Roof Painting?


Time and Labor Savings: Compared to traditional brushes and rollers, airless paint sprayers can cover large areas in a fraction of the time. This translates to significant labor savings, making it an attractive option for both commercial and residential projects.


Superior Coverage and Finish: Airless sprayers deliver a consistent, even coat of paint, ensuring uniform coverage and a smooth, professional-looking finish. This is especially important when painting textured surfaces like shingles or tiles, where achieving comprehensive coverage can be challenging with conventional methods.


Increased Productivity: With their high-volume output and continuous flow, airless sprayers allow you to complete projects faster, minimizing downtime and enabling you to take on more jobs in a given timeframe.


Versatility: Airless sprayers can handle a wide range of coatings, from traditional paints to stains, sealers, and even some texturing materials, making them a versatile tool for various roofing applications.


Choosing the Right Airless Paint Sprayer


Not all airless paint sprayers are created equal, and selecting the appropriate one for your roof spray painting project is essential. Look for a professional-grade airless sprayer with a high-pressure rating, typically up to 3,000 PSI (pounds per square inch). This pressure range ensures that the paint is atomized into fine particles, resulting in a smooth and even application.


Additionally, consider the sprayer's tip size, which determines the flow rate and spray pattern. For roof spray painting, a tip size between 0.015 and 0.021 inches is recommended, as it provides a balance between coverage and control. Larger tip sizes may lead to excessive overspray, while smaller sizes can result in an inadequate flow rate, slowing down the project.


Preparing for Roof Spray Painting


Before firing up your airless sprayer, there are some important preparations to make. First, inspect the roof thoroughly and make any necessary repairs to holes, cracks, or damaged areas. Clean the surface well, removing dirt, moss, and any loose materials. Proper cleaning ensures good adhesion of the new coating. Next, protect any areas you don't want painted by laying down drop cloths and using painters tape and plastic sheeting. Pay special attention to trimming edges neatly. Once the roof is prepped, you'll need to set up your airless sprayer system.


For a typical asphalt shingle roof, plan to apply two full coats of 100% acrylic latex paint using a high quality product designed specifically for exterior house paint or roof coatings. Divide the roof into manageable sections and work systematically to ensure complete coverage without missing any areas. Allow the first coat to dry fully before applying the second, overlapping coat. This two-coat system provides optimum coverage and protection from the elements. If painting a metal roof, use rust-inhibitive direct-to-metal acrylic coatings formulated for that purpose. Proper prep work is critical since rust can quickly develop on any bare metal areas.


In the world of professional painting, the AEROPRO 650 Airless Paint Sprayer is designed to help you work more efficiently.  It has 4HP power brushless motor, get more work done. Low per minute 2000 unique inductive intelligent recognition nozzle technology. The biggest can support 633 nozzles, improve construction efficiency. Robust all-metal construction withstands heavy duty use on worksites while the convenient cart design allows effortless mobility.


Handle a wide range of coating materials, wall emulsion paint, coating, colorants, steel structure anticorrosion paint, epoxy paint, enamel paint on the metal surface. 

Built for professional remodeling and repainting contractors looking to increase the number of larger jobs.



Motor size:4HP(3000W)

Max pressure:3300PSI(227bar)

Standard Noozle size:625(0.025")

Flow rate:5L/min(1.35GPM)

Max.Pressure for the hose:83Mpa

Length of High Pressure Hose :30m

Max spray tip:633(0.033")


AEROPRO has quickly risen to become an unrivaled global producer of air-powered devices including air tools, air spray gunair nailer, airless paint sprayer, and etc.

AEROPRO seeks independent sales agent to represent and market our industry-leading pneumatic tools. We support OEM, ODM, OBM customization, small order quantity is acceptable and samples are available.

Make any cooperation possible. Any services related to the product, inquire with us now! Sales@Aeroprotools.Com