Key takeaways
- Primer does not replace surface cleaning or defect repair.
- Use an interior or exterior primer according to the application.
- Follow the product’s drying, thinning and recoating instructions.
What is primer?
Primer is a preparatory coating applied before the finishing paint. Its job depends on the formulation, but it commonly helps create a more consistent base and prepares the surface for the topcoat.
Primer selection is especially important on surfaces with uneven absorption. Without suitable preparation, a finishing coat can look patchy or require more material. A compatible primer can help create a more consistent base for the next coat.
Why preparation still comes first
Dust, loose plaster, powdery surfaces, grease and moisture can interfere with a coating system. Cleaning and repairing the substrate before primer is essential for a reliable finish.
Preparation may include cleaning, sanding, removing loose particles and allowing repaired areas to dry. Primer should not be used to hide active dampness, unstable plaster or other substrate problems that need separate attention.
Interior vs exterior primer
Interior primer is selected for indoor surfaces, while exterior primer is designed for surfaces exposed to weather. Always check the manufacturer’s recommended substrate and exposure conditions.
Exterior primers need to be selected for the exposure and substrate. Interior primers can be selected around indoor masonry conditions and the desired finishing system. The safest approach is to follow the product-specific recommendation.
How primer fits into the system
For many masonry projects, the sequence is surface preparation, putty where required, primer and finishing coats. The exact sequence can vary by product and substrate, so the technical instructions should take priority.
Keeping the same system across preparation and finishing can simplify application. Painters can follow a clear sequence rather than adjusting products during the job, which helps reduce avoidable variation between areas.
Lado Paints primers
Lado Paints offers SUPER Interior Wall Primer and SUPER Exterior Wall Primer. Visit the product pages to compare their intended applications and contact the company for current technical guidance.
Lado Paints provides separate interior and exterior primer options so that customers can choose according to the project. Review the product page before purchase and confirm any special application requirement with the company.
Frequently asked questions
Can primer replace surface preparation?
No. Primer is part of the preparation system and does not replace cleaning, repairs or treatment of dampness.
Should I use the same primer indoors and outdoors?
Not automatically. Choose a primer according to the surface and exposure conditions stated by the manufacturer.
Why does primer help?
A compatible primer can create a more uniform base and support the performance of the finishing coat when the substrate has been properly prepared.
Need help choosing a product?
Tell us about your wall, room or project and the Lado Paints team can guide you toward the relevant product information.
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