For questions regarding the roof of a home or other structure in general, including roofing types, installation, maintenance and repair, upgrades, venting, and potential problems.

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10 views

Warranty claim on thermal cracking of asphalt shingles?

Two questions really: How bad is this thermal cracking? Is the roof shot / need replacing based on this issue? and... Given that this roof is fairly new - 3 years (located in Arizona), is it ...
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1answer
23 views

Roof Replacement including replacement of rotten plywood

A local roofer submitted a proposal to me for a roof placement that included replacing rotten plywood with 1/2" CDX. The existing plywood on my roof is only 3/8". I thought perhaps he made a ...
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0answers
23 views

What lintel to use above bi-fold doors in man cave?

I'm building a man cave in the corner of my garden, the base is finished already, now I'm planning the build from the ground up The structure will be 2.5 metres high and will have a flat roof (rubber)...
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1answer
39 views

New roof sagging

We replaced the old roof last week including taking off all layers and boarding with plywood the entire roof. Now, one corner has noticeable sagging. Sagging didn't occur before roof replacement. I ...
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1answer
101 views

Can I raise a sagging shed roof by winching the walls back into place?

TL;DR Can I fix the sag by slowly jacking up the ridge, simultaneously tightening some steel cables attached to the top of each wall? Measuring between the top of the wall and the top of the ridge, ...
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2answers
22 views

Do I need a moisture barrier when insulating a metal roof with compressed Styrofoam?

I have a cabin with a metal roof and plywood underlay and want to use compressed Styrofoam to insulate between the rafters. Do I need a moisture barrier and how would I install this?
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0answers
28 views

White substance on roof timbers

I've just inherited my dad's house and I've been looking over it's condition, and one of the walls was getting damp when it rains, I had a look in the loft and saw the following: Is this dry rot? ...
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1answer
21 views

Low Sloped Asphalt Shingle Roof Remediation

The operative word here is remediation. This isn't a new install, so I'm looking at how to strategically work with what I've got. The previous owner put a new shingle roof on my garage about 4 years ...
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1answer
58 views

Are Florida, USA, roofing contractors required to have permission from everyone listed on the deed [closed]

My father wants a new roof. My mother is living out of state. They both are listed as owners on their deed. The roofing contractor(s) told him that he'd either have to get her to sign the documents, ...
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0answers
15 views

What's the proper way for an awning roof to sit on the rafters(?)?

We have some roof covering our patio. There is about a half-inch gap between the OSB that makes up the roof, and I guess they're called rafters? Whatever they are that form the edge of the roof line. ...
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0answers
41 views

Is it safe to use a blower to clean debris off a shingle roof?

I would like to routinely (once a month) clean the debris (leaves, sticks, pollen, etc.) that collects on my shingle roof because of the shallow pitch: Rather than use a soft broom to brush the ...
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1answer
33 views

How much can venting cool the top floors?

I recently bought a house -- big, beautiful sucker built in 1900, with two full stories and a third that's essentially a very nicely finished attic. I had a contractor give me an estimate for ...
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3answers
87 views

Is it more work to replace or remove a skylight?

We have a 20 year old leaking skylight, and right now I am contemplating either removing or replacing it. Not exactly sure why it is leaking, perhaps the flashing is bad, but it's leaked for a while. ...
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1answer
53 views

Can I use 2“x6” as roof rafters for porch addition over concrete patio?

If I tie into a 6/12 pitch roof with 2x6's. Will I be able to span a concrete slab of 11' 6"? I will be setting 4x4 post every 6' with 2 2x6's with 1/2" osb sandwiched between them as the form to set ...
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1answer
42 views

New Roof - Exposed Nail Heads

Have new roof with exposed nail heads at ridge. Roofer's fix was to cut tiny squares of shingle and goop/glue to top of nail heads. Need inputs from roofers; what is the proper way to fix the ...
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1answer
27 views

replacing roof screw

My Metal roof is 20 years old and a roofer told me to replace the screws with a bigger size. how do I determine my screw size? roof screws seem to have their own standards #10, #12, #14, #16... what ...
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0answers
31 views

roof ridge beam support

I am building my son a batting cage that measures 14'x40'. I have finished the concrete slab and I am now framing a 3/12 pitch roof over it using rafters and not joists. The roof will be supported by ...
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0answers
18 views

Is my “modified bitumen” roof installed correctly?

Album here: http://imgur.com/a/3NhKm My new roof was installed last week. I had a 400 sq. foot section of flat roof that was supposed to receive modified bitumen. I wanted to add a bit of pitch but ...
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0answers
16 views

Would adding ceiling joists in combination with a ridge beam reduce the reaction force of the ridge beam supports?

so think of a normal coupled roof design, with ceiling joists acting as ties for the rafters, except the rafters aren't attached to a ridge board, but a structural ridge beam. Would this configuration ...
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1answer
108 views

Can a structural ridge beam be used in a hip roof design?

If so this would place the ridge beam somewhere in the middle of the roof, how would you provide support for the ridge beam in this instance?, could you support it by an internal wall? This is for a ...
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1answer
15 views

Can a 290mm x 45mm lvl beam be used as a structural ridge beam?

Also are ridge beams only used for exposed ceilings, or can you install ceiling joists which are connected to the rafters, - i assume this would provide extra support. This is for a single story ...
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4answers
966 views

Does a roof with 3 layers of asphalt shingles somehow last longer?

I have a building with 3 roofs on it, the top layer is starting to curl, etc, due to its age. My question is if having 3 layers of shingles will extend the useful life of the roof? I know this is ...
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1answer
42 views

How to repair small area of damaged/loose plywood sheathe on roof?

I have a small section at a corner of my roof where the plywood has come lose and a gap has appeared. It is on a part of the roof that is not easy to see, and unfortunately some birds have started ...
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1answer
47 views

Attic Ventilation Improvement

Location: Portland, Oregon, USA area House: 1972 single story, approx 1500 sf attic area. When we bought the house the prior owners paid for attic mold remediation. I believe the mold was a result ...
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1answer
41 views

Fixing (at least temporarily) roof damaged wooden beam (rafter?) in an outbuilding

Outside my house there is an outbuilding. I am not sure of the roofing terms in English, but trying. On of the roof beams, the center one on this picture (a rafter?) is heavily damaged at its base, ...
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0answers
37 views

What is the appropriate type of caulk/sealant to use to connect evaporative/swamp cooler to roof duct?

I recently had my house re-roofed (flat roof, tar & gravel type). In order to do so, the roofers had to get the swamp cooler out of the way. My cooler is attached to a duct protruding upwards ...
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1answer
38 views

Why do you double the bottom row of asphalt shingles

I've been taught that when you lay shingles, the first (bottom) row on the eave should have a double row, and that the bottom one is placed upside down. Why?
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3answers
322 views

Adding an eaves drip edge to an existing roof installation

There is some water dripping behind the gutter, and I am thinking of installing a drip edge. From what I read a drip edge is installed under the ice water shield at the eaves. The ice water shield ...
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3answers
91 views

What to paint a rusting metal roof with

I have a bump out in front of the house with a sloped metal roof on it that is rusting. I want to fix this before it becomes a problem but I can not find reliable advice for my particular situation. ...
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0answers
13 views

Home Flat open roof Repair mortar

my house roof flat make RCC.roof has joints 30feet long,there is a crack 5cm wide,5cm deep,and 30feet long,How can i fillup it.what do i use cement sand concrete than water stop leak?
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1answer
68 views

WIll electric pressure washer work with low water pressure?

I live in a 5th floor of a building that doesn't have strong water pressure. I remember that many years ago a cleaning group was going to pressure-wash the exterior of the building, but couldn't ...
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3answers
168 views

How to fix eaten/rotten rafter

I need to repair some rotten 5"x3.5" (actual size) rafters (the one in the pic is the worst). I'm thinking about using a pair of unequal length 2x6s to create a sort of half-lap joint with the cut-...
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0answers
54 views

Roof Fascia -> Do I need aluminum around fascia? Does fascia have to go over siding?

I'm about to redo a garage roof. (Existing roof picture is below.) I think I understand how most things come together: rafters, plywood, felt, ice shield, shingles, flashing. The things I don 't ...
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1answer
95 views

Worried about cracked rafters in house built 1985

There are cracks and dry rot in the rafters of this house, and I'm wondering how urgently they need to be fixed: support rafter where brace is located, crack runs widthwise almost entire width ...
0
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1answer
81 views

When re-roofing and doing a tear-off do I have replace the roof deck with plywood?

My home was build in 1920 and uses planks for the roof deck. I was planning on just removing the old asphalt shingles and installing new asphalt shingles. Makes sense to me; until a contractor friend ...
4
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1answer
146 views

How should I repair a cracked trough roof beam?

My garage has a 17' 2x8 ridge beam. The roof is a V, lowest in the center, with 2x4 rafters nailed to the sides of this ridge piece. At some point the roof drain clogged, the roof turned into a ...
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1answer
130 views

Extend Roof for Patio Cover

I have a corner patio area that I want to cover by extending the current roof. The side is 14.5' long and 9.5' wide. The slope is along the 9.5' side. I want to extend the roof line marked with ...
4
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3answers
140 views

How can I calculate covered area under a single-slope roof?

I'm looking to build a small covered patio area on our property, next to our pool. It'll be open on all sides, and covered by a simple skillion/single-sloped roof. So something like in this photo: ...
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2answers
60 views

Mold and an insulated shed roof

Thanks in advance for any answers. I have just had a shed installed which is built onto the side of our house. It has a metal roof, with OSB board under it (there are wooden noggins to support it). ...
4
votes
3answers
104 views

Redoing my roof: how should I redo my insulation?

I live in Denver. My 60 year old house is 1.5 stories. The upstairs has a highly sloped roof and definitely has insulation in the relatively narrow attic and I believe has insulation at the angled ...
3
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3answers
1k views

How to leak proof roof?

I'm working on converting an external garage into an office. I've removed the original flat roof and replaced with a pitched roof. I designed and built the roof trusses myself. I then put ...
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0answers
43 views

Decking on a Metal Roof

I can't say for sure that I've ever seen a deck on a metal roof... is it against code? If not, can anyone point me in the right direction for information about building a deck (or a crows nest) on top ...
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2answers
39 views

Is this algae or moss? How to remove it without damaging the shingles?

I live in the Seattle area. Below is a picture my roof. What are the green traces on the roof. Is this algae or moss? What is the easiest way to remove it without damaging the shingles and the paint?...
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1answer
46 views

Identifying and fixing leak sources, relevant cracks and water flow on a flat concrete roof?

I'm asking this here to avoid being conned by "professional" roofers in India who either exaggerate their estimates or send highly unskilled labourers to do the job. This is the layout of a roof: ...
3
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2answers
45 views

Improvising a temporary skylight?

I have a skylight that is essentially a flashed plywood curb with a late 50's era glass paver that "cups" over top. No tar or caulk, just gravity holding it there. Now, because I'm an idiot, I decided ...
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2answers
40 views

Flat roof ponding near drain - should roof be raised?

We recently raised a dipped section of our flat roof in order to reduce ponding. We're not sure we've raised the roof enough. Here's what it looked like as the rains died down. Do you all think we ...
3
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2answers
165 views

Repairing a notched rafter in a truss roof

I had a guy install a whirlybird-type vent in my roof.. those non-powered turbine types. Upon cutting the hole to install the vent, he accidentally cut a notch in the rafter: ). There are two ...
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3answers
681 views

What size beam do I need, and can I build one from lumber and steel?

I want to support a 20 ft. span of my roof where two roofs come together. My house is was originally 46'by 20'. A 40'by 12' addition was added, making an L shape, and when they put the beam in they ...
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2answers
84 views

Do you leave the heating cables for the roof/ gutter on 24 hours a day?

Do you leave electric heating cables for the roof/gutter on 24 hours a day?
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1answer
63 views

Name for Clerestory roof with windows at ridgeline?

I know the term "clerestory" can be applied to a variety of rooflines which permit windows above the normal top of the interior walls, but was wondering if there's a specific name for the version ...