Oct 04, 2020 · Onyx slabs are not as large as granite slabs because the material is much more fragile and unlikely to be extracted in large blocks. When installed, an onyx countertop requires sealing in order to protect its delicate surface from scratches and stains. Onyx costs double or more than granite, however, and it is a fragile material. CPT RV composite panels are ideal in the RV industry where lightweight, strong, and durable design is needed. Although more expensive than traditional construction, composite panels are used where traditional building materials are unable to provide the performance required. Typical applications include ramp doors, side walls, decking and slide outs. RV Composite panels systems can […]