1 siding manufacturer has announced a price increase taking effect in October 2021, led by Westlake (up to 12% depending on product line, Oct 1, 2021).
Checked daily · last checked Nov 2, 2026.
Siding Price Increases October 2021
1 Siding manufacturer price-increase letter from 1 brand taking effect in October 2021. Every row links to the original letter or posting.
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| Effective | Brand | Products | Increase | Source |
|---|---|---|---|---|
| Oct 1, 2021 | Westlake | Westlake letter posted by ABC Supply: Despite our best efforts, raw material prices continue to increase and we need to implement a price increase on all Royal® Vinyl Siding pro… | 10-12%, 2% | Original letter · ABC Supply |