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FacebookHow do you resurface and cover concrete posts with resin?
Step-by-step guidance to revive and protect exterior concrete
Refreshing old concrete posts with a resin coating is an effective way to enhance durability, protect against weather, and significantly improve appearance. Whether your posts are supporting fencing, marking boundaries, or providing garden structure, this guide walks you through each stage – from prep to final finishing – to achieve a professional long-lasting result.
What You’ll Need
- “Resinstone” – One-Component Methacrylic Resin for Concrete Floors and Driveways: One-component resin ideal for sealing and protecting exterior concrete surfaces.
- “Trasparente” – Epoxy Binder for Coloured Pebbles and Grits: Epoxy binder for decorative finishes using coloured aggregates or grits.
- “Trasparente” – Multipurpose Clear Epoxy Resin for Casting – Up to 2cm: Clear casting resin for achieving a glossy, protective surface up to 2cm thick.
- Wire brush and cleaning tools
- Protective gloves and safety goggles
- Sandpaper (medium to fine grit)
- Mixing containers and sticks
- Covers/tape to protect adjacent areas
Preparing Your Concrete Posts
Proper surface preparation is the foundation for any successful resin application. Remove contaminants, loose particles, and ensure the post is fully dry before applying any resin. Skipping these steps risks poor adhesion and a patchy finish.
Step 1: Prepare and Clean the Concrete Surface
Ensure the concrete post is dry, clean, and free from dust or oils before you begin. Preparation is crucial for maximum adhesion and longevity of the resin finish. Use a stiff wire brush to remove loose particles, old paint, or algae. For stubborn marks or contaminants, a degreasing solution may help. Rinse thoroughly and let the post dry completely, as moisture can affect resin bonding.
If the surface is particularly rough or chipped, lightly sand down high spots. Wipe away sanding dust using a damp cloth and allow to dry fully. Carefully tape off any nearby fencing or landscaping you want to protect from resin drips.
Step 2: Mix and Apply Resin to the Post
Mix and apply your chosen resin following the manufacturer’s instructions for best coverage and durability. Select a resin system matched to your desired end finish: for resilient, waterproof sealing and protection, “Resinstone” – One-Component Methacrylic Resin is a robust option that penetrates and protects outdoor concrete. For a clear coat or when applying decorative aggregates, prepare “Trasparente” – Epoxy Binder for Coloured Pebbles and Grits as directed, or for a glossy transparent finish, choose “Trasparente” – Multipurpose Clear Epoxy Resin for Casting – Up to 2cm.
Mix only the amount you can apply in the resin’s stated working time. Use a brush or roller to cover all exposed sides evenly. Work in manageable sections, smoothing the resin to avoid drips or pooling, especially on vertical surfaces. Double-check for missed spots at edges and corners.
Step 3: Cure and Finish for Long-Term Protection
Allow sufficient curing time for the resin to bond fully, protecting the post against weather and wear. Check the specific resin’s datasheet for minimum curing period—most systems harden within hours and fully cure over 24–48 hours. Avoid touching or placing stress on the post until the surface is thoroughly set.
If you wish to add a second layer for extra thickness or protection, lightly sand the cured surface to promote adhesion before recoating. Clean away all dust after sanding and repeat the application as before.
Final Tips and Common Mistakes to Avoid
Avoid rushing application and ensure all sides are evenly coated for a consistent finish. Work in dry, moderate temperatures to prevent moisture-related bonding issues. Protective gear is essential to prevent skin contact – even with non-toxic formulations.
Check the weather forecast, as rain or high humidity during curing may compromise results. For textured or heavily pitted posts, ensure coverage extends into crevices to maximise durability. If bubbles form, eliminate them right after application using a fine brush.
Expert Application Insights
Professional finish relies on attention to detail during both coating and curing. Always follow manufacturer guidance, apply resin generously yet evenly, and safeguard the area against accidental drips for results you’ll be proud of.
- "Resinstone" – One-Component Methacrylic Resin for Concrete Floors and DrivewaysPrice range: £36.71 through £336.48RESINSTONE is a one-component methacrylic resin for sealing and protecting concrete floors and driveways with durable, breathable protection.
"Trasparente" – Epoxy Binder for Coloured Pebbles and GritsPrice range: £33.45 through £397.95"Trasparente" is a transparent epoxy binder designed for coloured pebbles and grits, suitable for resurfacing projects requiring UV stability and a…
"Trasparente" – Multipurpose Clear Epoxy Resin for Casting – Up to 2cmPrice range: £8.95 through £397.95Suitable clear epoxy resin for DIY and professional projects up to 2cm thick, delivering a glossy, self-levelling finish and UV protection.
Frequently Asked Questions
Which resin is best for outdoor concrete posts?
"Resinstone" offers deep penetration and weatherproof protection ideal for external concrete posts and surfaces.
Can epoxy resins be used on old, rough posts?
Yes, as long as the surface is clean and sound. Additional sanding may be needed to level pitted areas before coating.
How long does the resin take to cure outdoors?
Most resin systems cure within hours, but allow 24–48 hours for full hardness and weather resistance, depending on product and conditions.
Do I need to prime concrete posts before applying resin?
Priming is usually unnecessary with specialised resins like Resinstone designed for direct application to concrete.
How can I prevent bubbles when coating posts?
Apply resin in thin, even coats and address bubbles early with a brush or gentle heat tool before full curing.
Can I create a decorative aggregate finish with resin?
Yes, "Trasparente" Epoxy Binder is ideal for combining with coloured pebbles or grit for a custom appearance.