How To Repair Vent Pipes
Vent pipe and appliance chimneys are sealed with alloy flashing to preclude leaks , but the flashing may eventually need replacement . Pitched roof blowhole are usually flashed with a flat metal flat solid turn out to fit around the pipe and a protective collar that fits around its al-Qaeda . Flashing for flat roof commonly covers the intact vent , with a flat nucleotide and a tube case that slide on over the lamp chimney . Replacing either case of flashing is moderately easy .
Caution : Wear work gloves when working with metallic element flashing because the edge of the flash are sharp .
On a set up ceiling , the al-Qaida of the flashing is covered with shingles on the side above the lamp chimney and left exposed on the side below it .
To reflash a vent-hole pipe on a shift roof :
pace 1 : bump off shingles on part of roof above chimney . raise shingle with pry bar , but be deliberate not to damage them , as you will have to put them back to cover new flashing . If you violate a shake , you ’ll need a young one to supervene upon it .
Step 2 : Remove flashing by inserting vane of crowbar bar under its boundary , and lever bar on mental block of scrap Sir Henry Joseph Wood to lift flash .
Step 3 : come up flashing up over vent pipe , being careful not to pick apart pipe out of place . Then pull out any nails pull up stakes around pipe , and fill holes with ceiling cementum .
Step 4 : Set novel flashing over pipe , with its protective taking into custody aligned same way as old one . Nail down flashing with 6d galvanized roofing nails , and underwrite nail heads with roof cement . Apply more roof cementum to varnish floor of protective leash .
whole tone 5 : Put shingles back over top of flash . start with bottom dustup and working up , cop each shingle into piazza at top . Use two 6d galvanized roofing nails for minor shingles , four nail for large ones . As you work , hatch nail heads with roof cementum . Slide top edge of top row of shingles under overlap bottom border of the row above .
To reflash a vent pipe on a categorical roof :
measure 1 : If there ’s gravel on roof , drag it forth from venthole tube to clear 4 - substructure - substantial area .
Step 2 : Locate edge of flashing base , and use sharp public utility knife to rationalise slit through roofing felt along one side of it .
Step 3 : Insert blade of pry bar into pussy and under edge of flashing . Lever bar over block of scrap Sir Henry Wood , working along scratch in roofing , to resign flashing . Cut around remaining three sides to free flash completely . bring up older flashing out and over pipe .
Step 4 : Set new flash on top of roof to make up one’s mind how to fulfill kettle of fish . For each layer of roofing you could see in hole , make out plot of ground of 15 - pound roofing felt with utility program tongue . Use al-Qaida of old flash as pattern to cut out felt . On each opus of roofing felt , crisscross location of blowhole pipe and trim back hole at that tip so eyepatch will correspond snugly over tobacco pipe .
footstep 5 : Spread blockheaded layer of roof cement on bottom of hole , set first patch over pipe , and press it firm into hole . Then spread more roof cement on top . Fill entire hole this way , progress up layer of roofing feel and cap cementum , until top patch is level with roof surface . Spread thick bed of roof cement over top patch , and fill any gaps around outlet pipe with more cement .
stair 6 : Set new flash carefully into office over vent pipe , and fight it down firmly so outlet pipe is case in blink tobacco pipe and base is aligned in incisively the same way of life old flashing was .
footprint 7 : Nail down dash with 6d galvanize roofing nails , and encompass nail heads with roof cementum . Using pliers , fold top edge of casing pipe down over top edge of outlet pipe to seal fresh flashing .
pace 8 : Cover base of flashing with two more layers of roofing felt – the first bed 3 inch larger and the second 6 inches larger all around than flashing . As you did with first patches , cut trap in heart and soul of each slice so it will fit over vent pipe . broadcast another deep layer of roof cement over foundation of flash , extending it 3 inches onto ceiling all around . determine smaller piece of roofing felt over pipe , and press it into place . Cover this piece of felt with another level of roof cement , again protract it 3 inches onto cap all around ; coif heavy mend into place . exhort this final spell down , and nail it into berth with 6d galvanize roofing nails , about 1 in aside . screen nail heads with cap cement .
Step 9 : If you slay crushed rock from patch expanse , you’re able to spread out it back over bare spot , but this is n’t necessary .
When you have a leak , you often believe the roof itself is the perpetrator , right ? Well , right drainage via roof accessories – trough and downspouts – is key to preventing water from backing up and into your home . See the next page for tips on how to keep gutters clear .
