How to Clean and Maintain our House Number Signs
A quick clean with simple household materials is all it takes to keep your sign looking like new.
Your house number sign is one of the first things guests see when they arrive at your home. Keeping it clean not only enhances your curb appeal but also helps your sign maintain its sharp, modern look for years to come.
Fortunately, cleaning a Thomas Design Co. sign is simple — with three easy approaches.
Watch the Process
We’ve put together a short video showing each cleaning method in action — from light maintenance to deep cleaning — so you can follow along and keep your sign looking its best.
Learn how to easily clean and refresh your Thomas Design Co. house number sign. In this video, we’ll show three simple cleaning methods using common household products — from gentle soap and water to isopropyl alcohol, and a final deep-clean option with a Magic Eraser sponge.
Our HDPE signs are made from durable, weatherproof materials, so maintenance is minimal. With just a few minutes of care, your sign will continue to look crisp, clean, and stylish for years to come.
1. Light Cleaning — Soap and Water
For routine maintenance, a gentle cleaning with warm water and dish soap is all that’s needed.
Use a soft cloth or sponge to wipe away dirt, pollen, and dust. Our signs are waterproof, so you can fully rinse with clean water and dry with a soft towel. This method keeps your sign looking fresh and in most cases, is the only cleaning method your sign requires.
Tip: A quick wash every few months will prevent buildup and keep the engraved details looking crisp.
2. Medium Cleaning — Isopropyl Alcohol
If your sign has more stubborn spots, such as tree sap, oily residue, or light discoloration, isopropyl alcohol (rubbing alcohol) works well.
Apply a small amount to a soft cloth and gently wipe the affected areas. This method safely removes grime without damaging the HDPE surface.
Avoid harsh solvents like acetone or paint thinner, as they may dull the finish.
3. Heavy Duty Cleaning — Magic Eraser Sponge
For deeper cleaning, especially if your sign has scuffs or weather stains, a Magic Eraser sponge can do wonders.
Dampen the sponge slightly and use gentle pressure — avoid aggressive scrubbing to maintain the subtle texture and sheen of your sign.
This approach restores the original brightness of your plaque, even after long exposure to outdoor elements.
Lasting curb appeal
Your sign was built to last, made with materials that only require simple routine care. With just minimal upkeep, it will continue to look just as stunning as the day it was installed.
Whether it’s a light wipe-down or a deeper clean, these techniques will help preserve the quality craftsmanship that make your Thomas Design Co. sign stand out.
Looking for a Durable House Number Sign that can be cleaned with ease?
Visit our Shop Today: House Number Signs-Thomas Design Co.