ROOF GUARD boards are made of rigid extruded polystyrene foam with closed cell and uniform cell structure, excellent thermal resistance and long lasting R-value. very good mechanical properties and excellent resistance to vapour and water absorption.
ROOF GUARD is extruded polystyrene rigid foam board with integral high density skin manufactured according to standrad specification ASTM-C578 with the following technical characteristics.
ROOF GUARD is a thermal insulating board can be used for both “inverted- system” as well as “conventional-system”. INVERTED ROOF SYSTEM: This system became standard and proved its usefulness over the period of time.Many consultants, contractors and architectures prefer and recommend this system as it has many advantages over conventional system. The concept of this system is the roofing membrane is laid directly on to the roof deck followed by roof guard boards as an insulating layer, then separation layer laid over it, and the final layer can be gravel or paving slabs or tiles.
ADVANTAGES OF INVERTED ROOF SYSTEM.
- The water proofing membrane is protected from the various effects of weather and mechanical stresses occurring during construction which increase membrane life .
- The inverted Roof System reduce Maintenance cost of the Roof.
The concrete deck should be clean and smooth if it is rough it is advisable to install protection sheet underneath the membrane. The water proofing membrane should be of good quality and free of solvents which could attack XPS foam and could laid directly on concrete deck. In next stage the XPS insulation boards should be laid loosely over the membrane with tight staggered joints. Paving slabs or gravels should be laid loosely over the XPS insulation boards.