Roof construction RV

Covering — the outer layer (TPO, PVC, EPDM, acrylic, or liquid roofing membrane) that protects against moisture and UV rays.

Plywood — serves as the solid base for the outer covering. The thickness is typically 3/8" or 1/2".

Insulation — usually mineral wool or polystyrene foam, providing thermal and sound insulation.

Joist — the supporting frame made of wood or metal. The typical spacing between trusses is 16 or 24 inches.

Ceiling Liner — the inner part of the RV roof (plywood, MDF, plastic panels, etc.).

Front Cap — the front part of the RV roof, designed to protect from wind and rain, often with antennas, windows, and ventilation. It is used to attach the termination bar and other components.

Back Cap — the rear part of the RV roof, similar to the front. It also includes mounts for ventilation and uses the termination bar for sealing.

Slide Out — a mechanism that allows part of the RV (such as the living room or bedroom) to slide out for more interior space. This roof section has special seals and membranes to protect against water and leaks.

Plumbing Vents — elements for air circulation in pipes, such as those in toilet systems.

Vent — a square hole for ventilating RV spaces such as bathrooms and kitchens.

Vent Fan — a vent with a fan to improve air circulation, often used in kitchens or bathrooms.

Skylights — roof windows for natural lighting and ventilation, some can open to improve airflow.

A/C Units — air conditioning units installed on the roof, which can also provide heating.

TV / Radio Antennas — elements for receiving television and radio signals.

Solar Panels — panels that convert solar energy into electricity, used for charging batteries and powering devices.

Refrigerator Vent Cover — a cover for venting refrigerator systems to prevent overheating.

Ladder — an element for accessing the roof, used for servicing and repairing roof elements.

Termination Bar — a pressure bar used to secure the membrane along the edges of the roof, as well as on the front and back caps (front and back cap).

Gutter — a rain gutter located along the edge of the roof designed to collect and drain rainwater. It is often used instead of the termination bar along the sides of the roof.

Vinyl Liner —a rubber insert inserted into a special groove on the termination bar for additional moisture protection.

1. TPO Membrane (Thermoplastic Polyolefin)

PVC Membrane (Polyvinyl Chloride)

3. EPDM (Rubber Coating)

4. Acrylic Coating

5. Liquid Roof Membrane