Andersal Home ›› Local Listings ›› NSW ›› St Leonards ›› Andersal NSW Construction St Leonards, NSW 2065 02 8437 180002 8437 1800Mobile: https://www.andersal.com.au Andersal is a leading Sydney based concrete repair and external waterproofing contractor. Our company was formed in 1987 and contracts to government, industrial, commercial and strata clients. Andersal is organised to efficiently manage contracts from $10K to multi-million dollar projects.