XPS Panel is a sandwich panel built from two CTP (GRP) facings with only an XPS foam insulation core between them — no plywood layer. It differs from the main CTP Panel line by leaving out the poplar plywood layer, which keeps the panel lighter and removes the moisture/organic-growth risk that comes with a wood layer.
XPS Panel is a sandwich panel: glass-fibre-reinforced polyester (GRP / CTP) facings with only an XPS foam insulation layer between them. The 6 mm poplar plywood layer found in the main CTP Panel line is not part of this build; the panel is two CTP facings around a single insulation core. This page introduces the general facing/core logic; exact figures (thickness, density, thermal conductivity) are confirmed per project.
Two CTP facings on the outside, an XPS foam insulation core in the middle — no plywood layer. Thickness and finish are confirmed per project depending on the application; no fixed thickness list is stated here.
Leaving out the poplar plywood layer makes the panel both lighter and fully water/moisture resistant. A build with no wood layer can be the better fit where the panel faces high moisture exposure or where extra weight reduction matters.
High-moisture interiors, weight-sensitive body panels and exterior cladding are the natural place to evaluate this card. For an overview see CTP Panel; for application examples see use cases.
Ask whether the project genuinely needs the plywood-free, lighter build, and confirm the required finish and thickness. If structural strength from a plywood layer is the priority, CTP Panel or CTP Birch Plywood CTP may fit better.
Other CTP panel types: CTP EPS CTP Panel, CTP PET CTP Panel, CTP Honeycomb CTP Panel. For a quote, use the contact form.
