Monarplan Suitable Substrates

The load bearing structure must comply with all associated national standards and regulations, ensuring that the load bearing capacity is sufficient for any additional loads imposed upon the construction. It is important to consider the possibility of future deflection of the construction when designing roof drainage.

Substrates must be strong enough to permit the penetration of fixings whilst maintaining suitable pull out strength. It is recommended that pull out tests are conducted prior to the application of the Monarplan system (see below).

Acceptable substrates

The Monarplan Roofing System can be installed on new construction or over existing roofs, when the existing roofing assembly is dry or the wet areas have been removed and replaced; or when the existing roof is completely removed to the deck. The roofing contractor has the final responsibility of acceptance of the surface to receive the roofing system.

The following structural substrates are acceptable for the Monarplan PVC Roofing System:


Profiled Metal


Plywood or OSB


Timber Boarding

Substrate Metal 175   Substrate Ply OSB 175   Substrate Timber Boards 175

Structural Concrete


Other Substrates

Substrate Concrete 175   Substrate Concrete 175  
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