Div 07 Thermal and moisture protection
1. Alum and soap mixtures applied in alternate mixtures (known as the Sylvester process) 2. Alum, lye and cement washes 3. Cement grout, with or without the addition of water-repellants. 4. Paraffin and other mineral bases, applied cold in solution or prepared in melted. 5. Miscellaneous materials of unknown composition sold under various trade names. 6. Specially prepared bituminous products, e.g., "FLINT-KOTE", "JOHN-MANSVILLE", etc.
(Waterproofing Coatings and Washes) Classifications of materials employed as surface coatings
Plastic sheet roofing
-Polycarbonate sheets -Ideally used in greenhouses, patios, outdoor sheds, and skyligths
Impermeable
A mortar or concrete is considered [,blank,] when it does not permit passage or flow of water through its pores or voids.
5 to 12 ft. in 1 ft. increments
Available lengths of corrugated galvanized iron roofing sheet
Impermeability through a Dense Concrete
Classificatoin of waterproofing methods for concrete done by accurate grading and proportioning of the concrete materials in order to secure a concrete so dense as to be waterproof.
Waterproofing Coatings and Washes
Classificatoin of waterproofing methods for concrete done by applying waterproof coatings or washes to the concrete after it is in place.
Integral Waterproofing Compounds
Classificatoin of waterproofing methods for concrete done by mixing foreign substances with the concrete
Membrane waterproofing
Classificatoin of waterproofing methods for concrete done by surrounding the concrete with layers of waterproofing materials.
1. Impermeability through a Dense Concrete 2. Waterproofing Coatings and Washes 3. Integral Waterproofing Compounds 4. Membrane Waterproofing
Classificatoins of waterproofing methods for concrete
1. Bituminous cement 2. Silicone cement
Types of joint sealants
1. Plastic 2. Polycarbonate
Types of plastic roofing
1. Sheet metal roofing 2. Plastic roofing 3. Tile roofing 4. Shingles
Types of roofing
1. Galvanized iron roofing 2. Aluminum roofing
Types of sheet metal roofing
1. Wood 2. Tar
Types of shingles
1. Clay 2. Concrete
Types of tile roofing
Plastic corrugated or ribbed roofing
Ideally used in sites of high salinity levels
Membrane waterproofing
Layers of waterproofing materials used in this method range from ordinary tar paper laid with coal-tar pitch to asbestos or asphalted felt laid in asphalt.
6 to 12 ft. in 1 ft. increments
Lengths of aluminum roofing sheets
8 feet
Most commonly used length of corrugated galvanized iron roofing sheet
10 corrugations, 3" pitch
Number of corrugations and pitch of corrugated galvanized iron roofing sheet
12 corrugations, 10 corrugations
Number of corrugations for (1) 32" and wider; (2) for sheets of narrower width
Integral waterproofing compounds
These are manufactured and sold under various trade names, and are available in powder or liquid form
Ga 26, generally specified, Ga 24 preferred
Thickness of corrugated galvanized iron roofing sheet (1) generally specified, and (2) preferred
1. Sahara 2. Pozolith 3. Aquella 4. Truscon "Zilicon" 5. Ant-hydro
Examples of Integral Waterproofing Compounds
6 inches
Galvanized iron sheets are also sometimes used as siding for industrial buildings. When used as siding, courses shall be lapped at least [,blank,] inches.
1. 32-5/8" 2. 32" 3. 31-1/2" 4. 31-1/8" 5. 30-5/8"
Width of aluminum roofing sheets
32 inches
Width of corrugated galvanized iron roofing sheet
Cutback asphalts
composed of a variety of products from thin liquids to heavy paste, often one or more asphalts dissolved in solvent are filled with minerals and fibers to meet requirements of different coating uses and provide tough, durable films resistant to the passage of water vapor.
Bituminous cement
is a black substance available in solid, semi-solid, or liquid states at normal temperatures. composed of mixed indeterminate hydrocarbons, appreciably soluble only in carbon disulfide or other volatile liquid hydrocarbon. used for sealing built-up roofing, and joints and cracks of concrete pavements.
Asphalt emulsions, Generally called Asphalt Base Clay Emulsions
minute asphalt particles dispersed in water and maintained in suspension (until applied) by a mineral colloid emulsifying agent. When the water vehicle evaporates, resilient reinforced weatherproof film remains which resist the passage of free water but allows movement of water vapor through the film and are classed as breathing films.