Torch-on membranes have become one of the most reliable flat-roof systems used across Christchurch and Canterbury. These bitumen-based waterproof layers are perfect for flat roofs, balconies, and rooftop decks, where water pooling and UV exposure are major issues.
At CanSeal, we specialise in both new installations and re-sealing existing torch-on membranes. Christchurch’s strong summer UV and cold winter frosts create extreme expansion and contraction cycles , and when poorly maintained, older membranes crack or lift at the seams.
Our trained team applies reinforced two-layer membranes using professional heating and priming techniques for long-term adhesion. The result is a seamless, watertight finish that resists UV, hail, and ponding — ideal for Canterbury’s unpredictable weather.
Our licensed applicators bring years of local experience in membrane installation and detailing. Every project is completed to manufacturer standards, ensuring complete watertight integrity.
Looking for a proven membrane system for your flat roof? Contact CanSeal today to schedule a professional assessment.
Two-layer bituminous membranes built for harsh New Zealand weather. A tough, fully bonded system for flat and low-slope roofs with clean detailing and proven longevity.
With correct preparation and a two-layer install, torch-on systems are known for long service life, helped by periodic inspections and maintenance.
Often, yes. Localised cut-outs, re-torched laps and upgraded details can restore performance without full replacement.
Arrange an on-site assessment and we’ll recommend the right system for your roof, including options and timelines. Serving Christchurch and the wider Canterbury region.
