Siding decision guides
Repair siding when the damage is impact-based and confined to a few panels. Replace it when water has gotten behind the wall, when panels are widely failing, or when the material is at the end of its listed life - 20 to 40 years for vinyl, aluminum and cedar, 50-plus for fiber cement, per This Old House.
The decision usually turns on one question: is the cause impact or water? Impact damage is local and repairable. Water damage means the wall assembly is failing, and patching the visible symptom leaves the mechanism running. If you see interior stains, soft sheathing, or repeated leaks at the same detail, price the replacement.
The second input is time in the house. At roughly $8,000 to $30,000 for a full job (This Old House, 2026), selling within a couple of years usually favors targeted repair plus honest disclosure over a full replacement. Staying fifteen years flips it - you will pay for the replacement eventually, and paying once is cheaper than paying for repairs and then replacement.
The third input is opportunity cost. A tear-off is the only cheap moment to add exterior insulative sheathing, fix flashing, and replace windows. If two or three of those are already on your list, bundling them changes the math substantially in favor of replacing now.
Choosing siding between the options
The judgement calls that decide the bill, before anyone quotes you.
- Repair A few cracked or holed panels, no interior symptoms, siding well inside its service life, matching stock available.
- Replace Water symptoms, soft sheathing, widespread failure, or material at end of listed life. Also when you're already doing windows or adding wall insulation.
- Wait Cosmetic fading only and a short remaining ownership horizon. Spend the money on gutters, flashing, and drainage instead - those prevent damage.
- Bundle when you can Windows, exterior insulation, and flashing corrections are all far cheaper during a tear-off than as standalone jobs later.
- Don't re-side over a suspected leak Covering a wet wall is the single most expensive mistake in this category. If in doubt, open it.
All siding decision guides
Siding Repair vs Replace
Siding DIY vs Pro
Siding Budget vs Premium
Where these figures come from
Sources last checked
- This Old House - Siding Replacement Cost (2026) · retrieved 2026-07-25
- Fixr - Vinyl Siding Cost · retrieved 2026-07-25
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