WATERPROOFING & THERMAL INSULATION

Zainab Alawi
Apr 3, 2022, 2:17:50 PM

ComboRoof is a comprehensive roofing system comprising of waterproofing, thermal insulation and finishing, for the roof. This unique system is technologically advanced, fast curing and certified by Dubai Central Laboratory (DCL) for its joint free waterproofing and thermal insulation characteristic, that is fully bonded to the roof slab. ComboRoof system is one of the most efficient solutions for energy efficiency on buildings. This system provides a manufacturer’s Guarantee of 30 years against any leakage. Combo Roof system is an assured solution for your roof.

Light Weight Foam Concrete Works

Light weight foam concrete is a slurry containing Cement, water and air bubbles generated from a pump using special foaming agents, as it contains air it is very light in weight as compared to normal sand cement screed which reduces the load on your structure, having very good thermal resistance property making it the best solution for your Roof slope needs.

Bituminous Membrane Waterproofing

Membrane waterproofing is the oldest and trusted waterproofing system being used from ages to protect our structures from moisture.

Membrane is a mixture of bitumen and polymers.

 

A STEP-BY-STEP GUIDE

What you will need

STEP 1: SURFACE PREPARATION

Upon casting and complete curing of roof slab, engineer shall visit the site to inspect the roof and accept the roof for waterproofing and heat insulation works. A preliminary site inspection shall be carried out and any further preparation work if required shall be brought to the attention of the main contractor.

STEP 2: POLYFOAM APPLICATION

Polyfoam - Spray Applied Polyurethane Foam: Waterproof Insulation Polyfoam rigid polyurethane systems are two components based on blended polyol and polymeric MDI. Polyfoam in the Combo Roof (Roof Care) System acts as both waterproofing and thermal insulation. Polyfoam systems are available in four nominal density grades 45-50 kg/m³.

STEP 3: UV PROTECTION COATING

POLYCRYL PF - Single component, acrylic waterproofing and protective coating.

POLYCRYL PF is a single component liquid elastomeric U.V. protection coating specifically designed for application over Polyfoam. It is durable, flexible and has a high level of resistance to U.V. exposure and aggressive weathering agents. It is resistant to dilute acids, alcohol, petrol, carbonation and chloride ions.

STEP 4: PANELLING AND SCREED LAYING

Polyfab - Non-Woven Polyester Separation Layer POLYFAB separation layer is a high-quality geotextile fabric of non-woven polyester. It is intended to act as a separation layer between products and also to increase the puncture resistance of the waterproofing assembly.

Polyboard - Compressed Wood Fibers, Filler Board POLYBOARD consists of compressed wood fibers from timber, impregnated with Bitumen Emulsion. Polyboard complies in general with requirements of the American and British Standard Codes of Practice.

Screed Concrete - Protective fibre reinforced screed concrete SCREED CONCRETE with fibre reinforcement laid in slope 1:150, having 45mm thickness at drainage point and increasing away from the drain.

STEP 5: ANGLE FILLETS AND JOINT TREATMENT

Polyseal 1PU - One Part Polyurethane Joint Sealant POLYSEAL 1 PU is a single part low modules high performance polyurethane sealant, which cures on absorption of atmospheric moisture to form a firm and flexible rubber watertight seal for moderate movement of control joints. POLYSEAL 1 PU will be used in horizontal joints between screed panels.

STEP 6: FINISHING

Combo CRC - Highly efficient, energy saving flexible coating (SRI >78) Combo CRC is water-based pure acrylic resin proving efficient thermal protection for the roof. Combo CRC is a non- toxic, washable & environment friendly forming a seamless membrane that resists many harsh chemicals & bridges hairline cracks. COMBO CRC has high emittance & reflectance as well as a very low conductivity value which reduce thermal shock & heat penetration thereby keeping roofs much cooler in hot summer weather. They offer U.V. protection & display excellent dirt pick-up resistance and retain their flexibility long after aging.