METAL ROOFING TYPES

Construction

Подпись: 30-LB. FELT UNDERLAYMENTПодпись:Подпись: METAL ROOFiNG OVERHANGS FASciA 1 IN. (MIN.) FORMING DRip.Подпись: FASCIAMETAL ROOFING TYPESПодпись:Подпись: RAFTER OR TRuSSПодпись:Подпись:METAL ROOFING TYPES

Подпись: ROOF SHEATHING
Подпись: RAKE FLASHING LAPS HIGH POINT OF ROOFiNG METAL & LApS BARGE WiTH DRip; ATTAcH WiTH ScREWS OR NAILS WiTH NEOPRENE WASHERS.
Подпись: BARGE RAFTER OR VERGE RAFTER OR RAkE TRIM

Profiles

metal ridge

Подпись: FLASHiNG LAPS RooFiNG 6 iN. (MIN.)Подпись: METAL ROOFING Подпись: ROOF SHEATHING RAFTER oR TRUSS Подпись: RIDGE BOARD OR BEAM (OR BLOCKING BETWEEN TRUSSES) METAL ROOFING TYPESПодпись: TYPicAL VALLEY FLASHiNGПодпись: HiP FLASHiNG LAPS 6 iN. (MiN.) TO EACH SiDE OFMETAL ROOFING TYPESFLASHiNG MADE FRoM SAME MATERIAL AS

roofing

closure FLASHiNG at top of METAL roofing KEEPS out insects &

Подпись: ДЛ METAL-ROOF VALLEY & HIP
Подпись: METAL-ROOF RIDGE FLASHING

wiND-DRiVEN RAIN; FLASHiNG LAPS 30-LB. FELT uNDERLAYMENT.

Подпись: 30-LB. FELT UNDERLAYMENT EDXTENDS UP BEYOND END OF LOWER ROOFING PANEL. Подпись: LOWER ROOFING PANEL EXTENDS 3 IN. (MIN.) BEYOND INTERSECTION WITH TOP PANEL.METAL ROOFING TYPESBEAD of caulking or SEALANT AT TOP EDGE oF

lower roofing panel forms a dam against wind-driven rain.

top roofing panel nests AGAINST lower PANEL, forming tight seal.

SHEATHING

pitch-change FRAMING SEE 133B

METAL-ROOF PITCH CHANGE

GUTTER HANGER TYPES SEE 195C

Подпись: SNOW GUARDS SEE 196BПодпись: GUTTER SHAPES SEE 195A & BПодпись: NOTE SiZE GUTTER AND DOWNSPOUT ACCORDiNG To RAiNFALL iNTENSiTY & AREA OF ROOF. cONSULT LOCAL SHEET-METAL SHOP FOR RULES OF THUMB iN YOUR AREA. Подпись: DiVERTER AVOiDS SHORT GUTTER wiTH SEPARATE DOWNSPOUT AT SHORT EAVE. Подпись: SpLASH PAN pROTEcTS ROOFiNG WHERE DOWNSpOUT EMpTiES ON ROOF.Подпись: NOTE ALTHOUGH GUTTERS ARE cLOSE TO LEVEL FOR AppEARANcE; A SLOpE OF 1/16 iN. PER FT. iS PREFERRED FOR DRAiNAGE. METAL ROOFING TYPESconnect down­spout TO DRAiN pipE or to splash block.

SEE 194

Подпись: Vinyl gutters, although more expensive, are popular with owner-builders because they are more durable and can be installed without specialized equipment. Downspouts conduct the water from the gutter to the ground, where it should be collected in a storm drain and carried away from the building to be dispersed on the surface, deposited in a dry well, or directed to a storm sewer system. The problem of water freezing in gutters and down-spouts may be solved with heat tapes. Snow sliding off a roof can cause real problems— especially over porches, decks, and garages. The problem of sliding snow may be solved by keeping the snow on the roof with a low-pitched roof or with snow guards that project from the roofing surface to hold the snow mechanically in place (see 196B).
Подпись: The collection of rainwater by gutters at the eave of a roof prevents it from falling to the ground, where it can splash back onto the building and cause discoloration and decay, or where it can seep into the ground, causing settling or undermining of the foundation. Gutters also protect people passing under the eaves from a cascade of rainwater. In areas of light rainfall, gutters may be eliminated if adequate overhangs are designed and a rock bed is placed below the eaves to control the water and prevent splashback. Most wood-framed buildings are fitted with site- formed aluminum or galvanized steel gutters with a baked-enamel finish. Continuous straight sections of site-formed gutters are limited only by the need for expansion joints (see 194) and by the ability of workers to carry the sections without buckling them. Very long sections can be manufactured without joints, the most common location of gutter failures.

DOWNSpOUT FOR Every 40 FT. OF GUTTER



Related Posts:

Updated: 24 ноября, 2015 — 9:31 пп