Your home’s exterior siding is its first line of defense against the elements—and one of the biggest factors in its curb appeal. If your siding looks worn or faded, you may wonder whether to repaint it or replace it entirely. The right choice depends on the siding’s condition, material, and your long-term goals. Here’s what you should know before deciding.
1. How Do You Know If It’s Time to Repaint or Replace Siding?
Start by inspecting your siding closely. Look for signs of aging or damage:
- Fading or chalky colour
- Peeling or flaking paint
- Cracks, warping, or rotting boards
- Gaps that let moisture in
- Mold, mildew, or pest damage
If the surface is mostly intact and the issues are cosmetic, painting is likely a great option. But if there’s extensive structural damage or rot, replacement may be the smarter investment.
For a professional opinion, you can always Contact Usto speak with Randall’s experts.
2. When Should You Repaint Old Siding?
Painting is ideal when your siding is still in good shape but looks tired or dated. Repainting offers several benefits:
- Improves curb appeal instantly
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Adds years of life to the existing siding
- Protects against moisture and UV damage
- Costs less than full replacement
Randall’s carries premium exterior paints and stains designed for Ottawa’s weather. Browse our Collectionsfor durable finishes that stand up to sun, rain, and temperature changes.
3. How Often Should You Repaint Exterior Siding?
It depends on the material and the type of paint used:
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Wood siding: Every 5–7 years (more frequently if exposed to harsh weather)
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Aluminum siding: Every 5–6 years
- Fiber cement or composite siding: Every 10–15 years
Using high-quality primers and paints can extend these timelines significantly. For best results, have your siding cleaned and prepped before repainting.
4. When Is It Better to Replace Siding Instead of Painting?
If your siding shows extensive damage, rot, or warping, painting may only mask deeper issues. Consider replacement if you notice:
- Soft or spongy boards
- Cracks and holes that let water in
- Persistent mold or mildew
- Rising energy bills from poor insulation
- Paint that peels quickly even after proper prep
When replacement is necessary, you can still visit Randall’s for colour consultations and finish recommendations to complement your new siding.
5. What Are the Advantages of Painting Over Replacing?
Painting is often a cost-effective, sustainable way to refresh your home:
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Lower cost: Painting can cost a fraction of full replacement.
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Customization: Choose from thousands of colours to match your style.
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Sustainability: Keeps existing materials out of landfills.
- Quick turnaround: Most repainting projects take just a few days.
You can find everything you need—from paint and primers to tools and expert guidance—at Randalls.ca
6. What’s the Best Paint for Exterior Siding?
The ideal paint depends on your siding type:
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Wood siding: Acrylic latex exterior paint for flexibility and moisture resistance.
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Aluminum siding: Acrylic latex paint formulated for metal adhesion.
- Vinyl siding: Specialized vinyl-safe paint that resists warping and fading.
Randall’s experts can help you select the right product and finish for your material and climate—learn more on our Services Page
7. Can You Paint Over Vinyl or Aluminum Siding?
Yes, but it requires proper cleaning and surface preparation.
- Remove dirt, oxidation, and mildew.
- Use a bonding primer if needed.
- Choose a vinyl-safe or metal-appropriate paint to ensure long-lasting adhesion.
For professional-quality results, submit a Painter Order Formand get connected with reliable local painters familiar with exterior siding projects.
8. How Can You Extend the Life of Painted Siding?
Proper maintenance can keep your paint looking new for years:
- Wash your siding annually to remove dirt and mildew.
- Trim back trees or shrubs that trap moisture.
- Inspect caulking and repaint small areas as needed before issues spread.
With the right care, your paint job can last a decade or more. Randall’s can recommend protective coatings and topcoats to increase durability—explore options in our Collections
9. How Do Weather and Climate Affect Your Decision?
In Ottawa’s climate, seasonal extremes can speed up paint wear or cause siding to expand and contract. If your siding has held up well structurally, a high-performance exterior paint from Randall’s can renew and protect it. But if the material is warping or splitting, replacement may be the only way to ensure long-term protection.
Our in-store specialists can help you assess your siding’s condition and suggest products tailored for Canadian weather conditions—find expert advice on our Services Page
10. Where Can You Get Expert Help Deciding Between Painting and Replacing?
Not sure whether repainting or replacement is right for you? Randall’s is here to help.
- Explore exterior paints and coatings in our Collections
- Connect with a professional painter using our Painter Order Form
- Learn more about our expert Painting Services
- Or simply Contact Usfor a personalized consultation.
Give your home a fresh new look and lasting protection—Randall’s has the paints, tools, and expertise to make it happen.