Q1：為什麼戶外排水會突然排不動？Why does the outdoor drain suddenly stop working?
A1：透天厝或老宅若長期未清理，排水管容易因樹葉、泥沙與油脂沉澱結塊，造成排水緩慢甚至完全堵塞。In older or detached houses, outdoor pipes often accumulate leaves, mud, and grease. Without cleaning, these form hardened clogs that slow or block drainage.
Q2：這種結垢會不會對水管造成破壞？Can these blockages damage the pipe?
A2：會的。長期結垢不僅影響水流，還可能導致管壁腐蝕、裂縫甚至破裂。Yes. Prolonged buildup can corrode the pipe interior, create cracks, and even cause rupture under pressure.
Q3：怎麼清除這些硬塊？會不會破壞地面？How do you remove hardened deposits? Will it damage the ground?
A3：永正企業工程使用 360° 高壓旋轉水刀從管內剝離清洗，搭配內視鏡定位，無需敲地破牆即可完成施工。We use a 360° high-pressure rotary water jet guided by endoscopy. The process is non-destructive no digging or wall damage required.
Q4：現場會很髒或有臭味殘留嗎？Will the site be messy or smelly afterward?
A4：不會。我們鋪設防水墊、使用抽污機，並做收尾清潔，完工後地面乾淨無異味。No. We set waterproof mats, use sewage vacuum systems, and complete thorough site cleanup, leaving the area clean and odor-free.
Q5：多久需要清一次戶外排水幹管？How often should outdoor main drains be cleaned?
A5：建議每 1–2 年檢查清洗一次，特別是老宅、雨季前或出現異味與排水變慢時。We recommend every 1–2 years, especially before rainy seasons or when odor and slow drainage appear. Early cleaning prevents bigger issues.
