Epoxy resin for in-building rehabilitation.
Epoxy resin systems for stacks, collector pipes and building drains inside buildings, without opening up walls and floors.
Pipes in buildings, walls stay closed.
In-building rehabilitation is the trenchless repair of wastewater pipes inside buildings: stacks, collector pipes, building drains, foul water pipes and rainwater downpipes, including house connections.
As with buried pipes, CIPP liners are used: a resin-impregnated liner is installed and cures inside the pipe.
- Tight fit against the existing pipe
- Sufficient mechanical strength in the cured state
- Chemical resistance to the constituents of wastewater
- Under thermal load: sufficiently high glass transition temperature
Hot wastewater needs a high Tg.
Above the glass transition temperature (Tg), a cured resin becomes softer and less dimensionally stable. Where pipes come into frequent contact with hot wastewater, Tg is therefore a key selection criterion.
Tazipox EP120 and EP240 reach a Tg2 of 150 °C (second heating run). The system design depends on the pipe type, temperature, installation method, carrier material and the verification required.
The resin for your process.
Tazipox EP30
Cold-curing; technical data and data sheet on request.
Tazipox EP60
Cold- or heat-curing: pot life 23 min, cures in 45 min at 60 °C.
Tazipox EP120
Heat-curing: pot life 60 min, cures in 90 min at 60 °C.
Tazipox EP240
Heat-curing: pot life up to 240 min, cures in 150 min at 60 °C.
Tazacryl HP
Highly resistant, light-curing speciality resin for extreme media resistance, Tg above 140 °C.
This page does not replace a suitability assessment.
A high glass transition temperature alone does not prove suitability. What matters is the pipe type, the actual temperature, the installation method, the carrier material and the required verification.
For a binding assessment of your rehabilitation case, please contact us.
Quick answers.
What does in-building rehabilitation mean?
In-building rehabilitation, also known as in-house rehabilitation, is the trenchless rehabilitation of wastewater pipes inside buildings, such as stacks, collector pipes or building drains, without having to break open walls or floors.
Which pipes are rehabilitated inside buildings?
In-building rehabilitation typically covers stacks, collector pipes, building drains, foul water pipes and rainwater downpipes inside buildings.
What is Tg in epoxy resins?
The glass transition temperature, or Tg for short, describes the temperature range in which the mechanical behaviour of a cured polymer changes significantly. For epoxy resin systems such as Tazipox, the Tg is determined for each formulation and is available on request.
Why does Tg matter for applications under thermal load?
Above the glass transition temperature, the mechanical behaviour of a cured resin system changes significantly: it typically becomes softer and less dimensionally stable. For applications under thermal load, such as in-building rehabilitation or CIP systems, a sufficiently high Tg is therefore an important selection criterion.