Thistle’s Plumbing
- Website checked
Wise Cracks NL
Wise Cracks NL in St. John's installs sump pumps, waterproofs basements and repairs foundation cracks, which helps homes guard against basement flooding.
What they do
Wise Cracks NL, based in St. John's, handles basement leaks and foundation problems. Its work includes sump pump installation, basement waterproofing, foundation crack repair and work on flooded basements. Cracks are repaired by injection from inside the home where possible, and exterior repairs are carried out when an interior fix will not do the job. Free estimates are offered, financing is available and the warranty runs for life. The business has operated for 35 years and is open weekday evenings and Saturdays.
- Sump pumps
- Basement waterproofing
- Foundation crack repair
- Flooded basements
Listed under Basement flooding and sewer backup
Where they work
What we checked
- Its own website lists this work: wisecracksnl.com/services/basement-foundation-crack-repairs (opens in a new tab), wisecracksnl.com/services/sump-pumps (opens in a new tab)
Checked 12 Nov 2026, from public sources.
Not yet verified. We haven’t contacted this business yet. Ask for a written quote before work starts.
Other basement flooding and sewer backup pros in St. John's
King’s Plumbing & Heating Ltd
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