Installation Tips and Guidelines for roofers from TPO manufacturers
TPO roofing membranes are becoming increasingly popular both in residential
and commercial single ply roofing markets across the US, offering an economical
price as compared to its rival PVC roofing membranes.
1. Test welds should
be done at least twice daily — at the start of the day and after lunch. Also,
it is really important to do test welds whenever the machine is restarted. This
is a necessary step that can prevent excessive heat during welding.
Excessive heat has
been identified as a major problem that needs to be safeguarded against because
it can consume polymer stabilizers that will lead to the membrane’s
deterioration.
2. For proper
installation, there should be no welder drag. A contractor needs to align the
inside edge of the nozzle with the edge of the roller. If this is not done
correctly, improper alignment of the hot-air nozzle can create gouges in the
membrane outside of the seam.
3. It is important to
be careful when probing seams, because incorrect probing or lack of care can
also lead to problems down the line. When probing, it is best to use a blunt
probe. Probes tend to sharpen with use and as a result must be occasionally
dulled.
4. To avoid future
problems, it is also critical not to crease the membrane when it is folded
during installation. Folding over the membrane can result in a hard crease and
surface cracking. To avoid this, it is best to fold back the membrane for
applying adhesives or fasteners. However, it is important not to place any
weight on the fold to hold it in place.
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