Major Work Activity E - Waterproofs and damp-proofs surfaces

Table of Contents

• Task E-13 Waterproofs surfaces
  • E-13.01 Prepares waterproofing substrates
  • E-13.02 Applies waterproofing membrane
  • E-13.03 Installs green, sustainable, vegetative and protected membrane components
• Task E-14 Damp-proofs surfaces
  • E-14.01 Applies damp-proofing materials
  • E-14.02 Applies protection layer

Task E-13 Waterproofs surfaces

Task descriptor

Waterproofing is defined as the treatment of a surface or structure to prevent the passage of water under hydrostatic pressure. Waterproofing applications are done on vertical, horizontal and subgrade surfaces. Waterproofing components include primers, insulation and membranes. Waterproofing applications are associated with protected membrane assemblies (PMA), exposed applications, and green, sustainable or vegetative waterproofing systems.

Range of variables

• tools and equipment include: brooms, scrapers, torches, blowers, sprayers, rollers, squeegees, melters, fire extinguishers, pressure washers, grinders, pumps
• below-grade hazards include: cave-ins from dirt or rocks, uneven working surface, standing water, buried utility lines, un-shored slopes, inadequate access and egress, confined spaces and ventilation
• defects include: sharp edges, exposed rebars, holes, cracks, uneven surfaces, protrusions
• methods of application of primer include: rolling, brushing, spraying, squeegeeing
• types of primers include: water-based, solvent-based
• surfaces to be waterproofed include: concrete, masonry, wood, metal

Range of variables

• surfaces to be waterproofed include: concrete, masonry, wood, metal
• types of primers include: water-based, solvent-based
• methods of application of primer include: rolling, brushing, spraying, squeegeeing

Range of variables

• tools and equipment include: torches, melters, squeegees, hot buckets, rollers, sprayers, trowels, mops, fire extinguishers
• types of waterproofing membranes include: asphalt built-up, hot liquid-applied modified asphalt, modified bitumen sheet, thermoset (butyl, EPDM), thermoplastic (PVC, TPO), fluid-applied elastomeric materials, bentonite, metallic waterproofing, cementitious waterproofing, crystalline waterproofing, hot rubber, cold process, self-adhered membranes
• reinforcing plies includes: polyester, fibreglass mats, organic
• protection layers include: sanded base sheet, rigid asphalt board, polyethylene sheet, geo-textile fabric, drainage board, extruded polystyrene (XPS), expanded polystyrene (EPS)

Range of variables

• types of waterproofing membranes include: asphalt built-up, hot liquid-applied modified asphalt, modified bitumen sheet, thermoset (butyl, EPDM), thermoplastic (PVC, TPO), fluid-applied elastomeric materials, bentonite, metallic waterproofing, cementitious waterproofing, crystalline waterproofing, hot rubber, cold process, self-adhered membranes
• tools and equipment include: torches, melters, squeegees, hot buckets, rollers, sprayers, trowels, mops, fire extinguishers
• reinforcing plies includes: polyester, fibreglass mats, organic
• protection layers include: sanded base sheet, rigid asphalt board, polyethylene sheet, geo-textile fabric, drainage board, extruded polystyrene (XPS), expanded polystyrene (EPS)

Range of variables

• tools and equipment include: wheelbarrows, cranes, aggregate buckets, shovels, conveyors, torches, rakes
• defects include: holes, gouges, debris, laps
• overburden components include: drainage board, extruded polystyrene insulation, filter fabrics, ballast, growing medium, pavers
• green, sustainable and vegetative and protected membrane components include: root barriers, moisture retention mats, irrigation system, growing medium, vegetation

Range of variables

• green, sustainable and vegetative and protected membrane components include: root barriers, moisture retention mats, irrigation system, growing medium, vegetation
• tools and equipment include: wheelbarrows, cranes, aggregate buckets, shovels, conveyors, torches, rakes
• vegetative-free zones include: around drains, perimeter, roof penetrations, rooftop units

Task E-14 Damp-proofs surfaces

Task descriptor

Damp-proofing is the treatment of a surface or structure to resist the passage of water in the absence of hydrostatic pressure. Damp-proofing methods are generally employed to reduce dampness within the structure above grade, or below grade in the absence of ground water. Installations do not require a membrane and can be completed with single or multi-coat applications.

Range of variables

• tools and equipment include: trowels, brushes, rollers, spray applicators, torches, pressure washers, grinders, pumps
• below-grade hazards include: cave-ins from dirt or rocks, uneven working surface, buried utility lines, un-shored slopes, confined spaces and ventilation, overhead hazards
• defects include: sharp edges, exposed rebars, holes, cracks, uneven surfaces, protrusions
• damp-proofing materials include: solvent-based mastic damp-proofing, bituminous emulsion damp-proofing materials, bituminous membranes, polyethylene, polystyrene

Range of variables

• damp-proofing materials include: solvent-based mastic damp-proofing, bituminous emulsion damp-proofing materials, bituminous membranes, polyethylene, polystyrene
• tools and equipment include: trowels, brushes, rollers, spray applicators, torches, pressure washers, grinders, pumps
• methods for applying damp-proofing materials include: spraying, rolling, brushing, trowelling, torching

Range of variables

• tools and equipment include: hammer drills, trowels, caulking guns, knives, powder actuated tools
• protection layers include: asphalt boards, rigid insulations, geo-textiles, drainage boards
• application products include: adhesives, fasteners

Range of variables

• protection layers include: asphalt boards, rigid insulations, geo-textiles, drainage boards
• tools and equipment include: hammer drills, trowels, caulking guns, knives, powder actuated tools
• application products include: adhesives, fasteners

• Previous
• Next