Dupont SealcoatingPaving contractor in Merrimack, NH

Dupont Sealcoating is ranked #31 of 153 paving contractors in Merrimack by CR Score, with 57 out of 100 as of November 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

Dupont Sealcoating is open Monday to Saturday. Its listed hours are Monday to Saturday, 7 AM – 5 PM. On Saturdays it is open 7 AM to 5 PM and closed on Sundays. Hours come from the business listing; holiday hours may differ.

Serves Merrimack and 11 towns within 25 miles: Litchfield, Bedford, Milford, Londonderry, Nashua, Hudson, Manchester, Hollis, Derry, Derry Village and South Hooksett. The list is based on the business's location and the usual service radius for paving. Confirm your address is covered when you call.

Dupont Sealcoating has a rating of 5.0 from 12 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

Call Dupont Sealcoating on (603) 424-5094. The business is at 19 Burt St, Merrimack, NH 03054. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.