Markham Pipe Repair — Frequently Asked Questions
How much does pipe repair cost in Markham?
Pipe repair in Markham uses a 1.10× area modifier: minor fitting repair $220–$550, ABS fitting cluster $440–$1,100, Poly-B full home replacement $3,850–$7,700, cast iron stack section $660–$2,200, full galvanized or cast iron replacement $2,200–$6,600.
What pipe material is in my Markham home?
Markham pipe material depends strongly on build year and location: Unionville and old Markham Village (pre-1970) — original cast iron drain stacks, possibly galvanized supply; 1970s–80s Markham suburbia (Buttonville, Milliken Mills) — copper supply in most, Poly-B in some 1980–1994 builds, ABS drain; 1990s–2000s (Thornlea, Swan Lake) — copper supply, PVC/ABS drain; post-2005 (Cornell, Wismer, Berczy) — PEX supply, PVC drain. If you are unsure, we inspect and identify on-site.
Should I replace Poly-B pipe in my Markham home?
If your Markham home has Poly-B supply pipe, the standard industry recommendation is proactive replacement. Poly-B does not fail on a predictable schedule — fittings can fail suddenly after 25–40 years of service. Most GTA home insurers either refuse coverage or charge surcharges for Poly-B properties. Replacement with PEX-A ($3,850–$7,700 for a full home) eliminates the risk and satisfies insurer requirements.
How long does pipe replacement take in a Markham home?
Minor fitting repairs take 2–4 hours. Cast iron stack section replacement takes 4–8 hours per floor. Full Poly-B home replacement takes 2–3 days in a typical Markham two-storey. Full galvanized supply replacement takes 1–2 days. We provide a firm timeline after the initial assessment and minimize wall opening with flexible PEX routing.
What is CIPP pipe lining and is it available in Markham?
CIPP (cured-in-place pipe) lining installs a new pipe within an existing failing pipe without excavation. In Markham, CIPP is primarily used for sewer laterals — particularly in Unionville and Markham Village where clay lateral excavation would disturb heritage landscaping. For supply pipe replacement, direct PEX installation is more practical than lining. Camera inspection determines CIPP candidacy for drain and sewer applications.
Does Markham's Rouge River watershed affect pipe excavation permits?
Yes. Properties in northeast Markham near Rouge National Urban Park require TRCA permit for any excavation within 30 metres of the Rouge River or its tributaries. Indoor pipe repairs and supply line replacements do not require TRCA review. Sewer lateral excavation in the Rouge corridor does. We confirm permit requirements for your specific Markham address before quoting any excavation work.