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.