Heat – Welded PVC And TPO Seams Do Away With Seam Weaknesses

Oct 19, 2020
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A flat roof is only as strong as its weakest seam. Many types of seams are not strong enough under pressure and will fail. Age, foul weather, and even poor application by badly trained roofing mechanics can cause a seam to open.

Once the seam opens, the membrane separates, and the next rainfall will do the damage.

At Chaffee Roofing, we know that properly installed heat-welded membranes fix the problem of seam weakness. Our years of experience tell us how both PVC and TPO give peace of mind when it comes to solid roofs. 

Let’s take a closer look at how not to have roof seam weakness become an issue.

It’s all in the welding

Both PVC and TPO membrane seams are heated-welded together. The rolls of membrane slot into place and our highly-trained Chaffee Roofing technicians go into action.

We use robotic welders on large, open plan roofing installations. The onboard computer automatically sets the correct temperature for the material. Hot air welding, using temperatures up to 800 degrees, seal together the seams of the membranes. 

The computer also sets the correct pressure to apply and the most suitable speed when welding together the PVC seams.

The bonding process creates the strongest seal possible in roofing systems.

How about the tighter roof areas?

While the robotic welder is ideal for the larger roof areas, it may not be suitable for smaller roof areas.

Our experienced technicians know how to work their way around this problem. They use hand-held heat guns to weld the seams into place and rubber rollers to apply the pressure. If the automatic system cannot get to the flashings, the roofing mechanics will take over that work too.

Knowing the correct temperature, the pressure to apply, and the speed to work at, are skills only experienced technicians have to offer.

Do you have a lot of units on the roof?

A typical roof will have HVAC units and other outlets sticking up across the surface. Like the membrane seams on the roof, the seals around the units can be problem areas.

Heat welding of PVC and TPO works perfectly around these roof units. The technicians will seal the membrane seams, stopping moisture from dripping through around the base.

Make your roof as strong as possible with heat-welded PVC and TPO membrane seams.

Call us

At Chaffee Roofing we know about roofing systems.

Our technicians are highly trained and experienced.

Ask our experts for advice on a project.

Call us today for all your roofing needs.

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