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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3
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2answers
50 views

Prevent water from overshooting gutter at corner roof valley?

I have a large, steep roof section (~400sqft) connected by a long ~20' valley. During heavy rainstorms, the majority of the draining water completely overshoots the gutter, landing near the ...
1
vote
3answers
60 views

Is 1/2" plywood standard and appropriate for a roof replacement?

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 ...
0
votes
0answers
17 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 ...
2
votes
4answers
454 views

Leaking corrugated metal roof

I have a place that has a corrugated metal roof under a wood deck. It's a pretty large area, maybe 40' x 40'. When it rains, water leaks through some of the nails. The deck boards are not nailed ...
1
vote
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). ...
2
votes
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 ...
1
vote
0answers
25 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)...
4
votes
11answers
15k views

Would putting a sprinkler on my roof help cool my home?

Anyone ever put a sprinkler on your roof to help out your A/C on unusually hot days? Just wondering if it helps.
0
votes
2answers
881 views

What are the advantages and disadvantages of elastomeric coatings versus shingles?

I'm ready to reroof my house and want to consider an elastomeric coating rather than replacing the existing shingles. I'd use a local contractor either way
0
votes
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 ...
1
vote
3answers
90 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. ...
6
votes
1answer
102 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, ...
1
vote
2answers
23 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?
3
votes
3answers
1k views

How to properly ventilate a Mansard Roof?

I recently purchased a home with a Mansard roof, I had some roofers come to give quotes to replace the top (it is finished) and they all recommend adding ventilation (known issue with Mansard's). ...
0
votes
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? ...
0
votes
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 ...
1
vote
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, ...
0
votes
2answers
3k views

How to calculate steel beam and posts size to replace existing wood beam in terrace

I have a covered terrace that extends 10' out (West) from the house towards the yard/pool and has a width/span of 32'. The current beam is made up of (2) 2x6 in wood placed side-by-side functioning ...
3
votes
4answers
9k views

Is installing a gable fan worth the investment?

We have 2 gable vents in our roof (approx 2' high or so), one at either end, and upon inspection it does not appear that there is really enough overhang in the roof for soffits. I still have to ...
0
votes
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. ...
1
vote
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 ...
0
votes
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 ...
1
vote
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 ...
1
vote
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 ...
1
vote
1answer
28 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 ...
0
votes
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 ...
0
votes
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 ...
0
votes
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 ...
0
votes
1answer
111 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 ...
1
vote
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 ...
0
votes
1answer
1k views

How should the top edge of an asphalt shed-type roof be finished?

Our contemporary house has a shed roof that is finished with a layer of aluminum flashing nailed through the top course of shingles. The flashing turns down and just covers the top edge of the ...
3
votes
4answers
969 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 ...
1
vote
1answer
43 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 ...
0
votes
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, ...
0
votes
0answers
38 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 ...
0
votes
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?
0
votes
1answer
116 views
0
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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. ...
4
votes
3answers
325 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 ...
0
votes
0answers
14 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?
3
votes
1answer
69 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 ...
6
votes
3answers
170 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-...
2
votes
2answers
686 views

What should I do about shingles that are stuck to the sheathing?

I'm so pleased to find this diy.stackexchange. I'm in the middle of replacing a small roof above an entry-way. It is an area of about 100 square feet (9.3 square meters). The top layer of shingles ...
1
vote
5answers
9k views

Best shoes for walking on a standing seam metal roof?

I went up on my roof this weekend to do some work on an antenna and clean chimneys. It's the first time I've been up there since I replaced the hail damaged asphalt shingles with standing seam steel. ...
14
votes
7answers
24k views

What are the pros and cons of steel vs. aluminum metal roofing?

I'm considering a new roof for my suburban home. The home is about fourteen years old and the shingles are in so-so shape. We have had two leaks already and I've been told that means it is a good ...
0
votes
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
votes
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 ...
2
votes
2answers
123 views

Ceiling wet at corner of chimney

Whenever it rains, the ceiling becomes wet at the corner of the chimney. I ASSUME it's just a small leak, but obviously I don't want it to become any worse. I have a flat roof, so getting up there ...
6
votes
4answers
3k views

Does this 2x4 support my gable ridge?

I'm installing a floor in my attic. To open up the space and simplify the flooring I'm removing temporary construction bracing. Most of the bracing is easy to identify, since it clearly does not ...
2
votes
1answer
186 views

Is this the correct way to vent my roof?

We recently bought a 1950s vintage house with no soffits, i.e. no roof overhang. Thus there are no soffit vents in my attic, only a ridge vent and 2 gable vents, one with a powered fan. However, those ...