HC-Lecture09-Exterior-Finishes-for-Houses

HC-Lecture09-Exterior-Finishes-for-Houses - Heavy...

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Unformatted text preview: Heavy Construction Heavy Construction Lecture #09 Lecture #09 Exterior Finishes L Prieto-Portar 2008 Roofing terminology: the eaves and the rake. Rake: the slope of the roof Eave: the horizontal edge of the roof Details of a raked roof without an overhang. Metal drip edge Rake board Siding Details of a raked roof with an overhang. Lookouts Rafter Details of an eave. Gutter Metal drip edge Fascia The soffit: in wood, metal or plastic The eaves are the horizontal roof edges, that provide an overhang to keep the rain off the siding and provide some sun shading. Soffit vent Roof Drainage. The drainage of the roof is intended to prevent spilling over the walls and staining them, and to prevent the runoff from causing soil erosion at the base of the walls. In order to channel the rain water the gutters are commonly attached to the fascia. Most gutters are made of metal or plastic, sloped towards downspouts. Downspouts are metal or plastic tubes that bring the water down from the gutters to the ground unto a concrete or stone splash block. Sometimes it is advisable to carry the water away from the structure through an underground pipe to a well or drainage pond. Downspout Gutter This downspout is connected to an under ground pipe, although splash blocks are also common. Air circulation Soffit vent To ridge or gable vent The roof ventilation is provided to keep the roof cool in the summer and warmer in the winter. It extends the life of the roofing material, reduces the HVAC costs and prevents the build up of ice on the roof. It is made up of the eave, ridge and gable ventilation holes. Perforated plastic soffit Ridge vent This roof sheathing has been left with a 4 gap (held back) to allow the ridge to be vented. A cross-sectional view of the ridge vent. Gable vent Six Types of Roofing Materials....
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HC-Lecture09-Exterior-Finishes-for-Houses - Heavy...

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