Questions tagged [roof]

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

Flat roof with Noggins and Firring Strips

When using firring strips on top of the roof joists to provide a slight slope for a flat roof, my current assumption is that you need 2 sets of noggins, one for the roof OSB and another for the ...
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2answers
79 views

Overflow over gutters on roof. One story ranch

Straight to the point, there's too much water coming off my roof. Unfortunately I wasn't able to record this last rainstorm to show you. My home is a 1950s ranch house one story obviously, the first ...
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95 views

Please tell me what's the name of the metal wrap

Can someone please tell me what's the name of the metal wrap in the first pic? It wraps the top of the wall on my roof top. My roof has a rubber layer on it and it goes up to inside the wall. On top ...
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1answer
48 views

Changing roof truss diagonal to vertical

I've got a roof with a few diagonal trusses like the blue one in this diagramme: I want to remove the BLUE truss and replace it with the RED truss, because we're adding some loft storage and ...
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17 views

Can I use a ceiling tie above the level of the top wall plates?

I'm beginning to research and design a DIY build of a fully insulated garden room. Some key points: I'm in the South West of the UK, Wind zone 3 with very little/infrequent snow. I'm planning to ...
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1answer
33 views

Flashing /waterproof for wires going through roof gable

I am in the process of replacing my siding and found an odd (read: wtf) spot where wires are coming through the roof to a porch below. It looks like they just put a hole through the roof/shingles but ...
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1answer
229 views

Plumbing jacks without cover on top, is it normal?

It seems that two plumbing jacks on my roof do not have a cover on top, and I used a DJI drone to fly over, and cannot see cover on the surface too. Is it normal to have a plumber jack without cover ...
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1answer
52 views

A creative Eco-friendly Underlayment for a metal roof? [closed]

I am building an octagonal cabin with a 200 sq ft metal roof (Grandrib 3) at a 30 degree pitch; the roof will sit on wooden strapping and will eventually have insulation below it contained by a ...
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44 views

How to add a drip edge to a steel deck beam over a porch

So I have rust and water damage from water rolling down from the curved porch beam into a porch ceiling. I don't have the same problem with my top-floor porch since that has a roof above it. The ...
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1answer
75 views

How to paint exterior wall when ladder needs to go from a roof section?

I need to paint the front of my house, but there is a section of wall that I cannot get to with a ladder on the ground. This is the house from the side, I need to paint (C) The problem is that if I ...
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1answer
53 views

What corrosion protection for nails, screws and bolts?

Would someone please care to explain the pros and cons of galvanized (hot & electro), stainless, zinc plated, spray (cold) galvanized, and (paint?) coated fasteners? There seem to be different ...
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1answer
76 views

Top to furnace flue just blew off

Sorry if this is posted in the wrong area. Just a moment ago during a storm the top to my furnace flue blew off. Earliest someone can get out here to put it back on it Tomorrow. How much damage will I ...
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1answer
44 views

Beam Span and Size for Pool House

I am building a simple pool house with a large overhang roof. Main issue I have is figuring out what beam size and span I need to support the roof properly. Key Features: Total Roof width: 29ft ...
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26 views

Solution to the recommended 2" roof gap for Hardie siding

So, I'm aware that Hardie recommends a 2" gap between the roof line when installing around a dormer. However, I find this gap to be rather extreme and makes for a strange look. I have also ...
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2answers
138 views

How to fix sagging timber roof trusses?

This is a follow up from a previous question: (Is this a sign of my roof trusses sagging?) Do you know how to use ratchet ties (or some other method) to fix sagging roof trusses? Here is an image of a ...
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1answer
89 views

How should I fix my downspout?

I just moved into this house that needs a lot of work. I noticed that the upper gutters drain onto the roof of the lower gutters and I learned that this will ruin my roof. I was originally thinking ...
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1answer
57 views

Are our cracked roofing tiles dangerous?

We had some felt replaced on our roof a couple of months ago. After the job had been done I went up the scaffolding and took a look at the outside of the roof. See photos at the bottom of this post. I ...
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2answers
98 views

Will a concrete roof hold the weight of a roof garden?

We are planning to build a roof garden on a flat roof. The area of the roof is 25' x 25'. The concrete slab thickness is 6", and our structural engineer has provided sufficient reinforcements, as ...
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1answer
896 views

Mold or rust stain on roof truss

Paid a visit to my attic earlier today to see if there was any winter damage. Looking all good except for a small piece of truss that has a black stain on it (see picture). I would have said mold ...
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1answer
61 views

Plant growing below flat roof

My neighbours have a plant growing out the wall where it meets the roof (flat roof). I mentioned it to them years ago and they must have pulled it out but it’s back and I’m worried it’s growing along ...
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1answer
60 views

Anything forward-thinking things to do regarding solar panels when putting a new roof on?

If you were putting a new roof on now on a shed or garage, and solar panels were a real possibility in the next two or three years (for lights and light-duty electric tools), what things, if any, ...
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41 views

Attaching OSB sheathing to 2x4 purlins over 12" OC rafters

I'm building a small (65 sq ft. over-engineered) shed using metal roofing. I've designed it using 2x8 rafters spaced 12" OC, then I plan to put 2x4 purlins on top spaced 16", 7/16" ...
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3answers
887 views

How to double up an existing single beam without disturbing the structure?

I am not a carpenter, so please forgive me if I use some terminology wrong. I will do my best to describe my situation, and then my question. I have an existing "lean-to" style porch roof ...
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53 views

Carport roof out of square a little bit

I have a carport roof sheathed in plywood (I did not do that part). I am ready to put the underlayment on (Tyvek). If the roof is slightly out of square, what is the best approach or standard? I would ...
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2answers
44 views

Remove fireplace leave metal chimney on roof

I removed a wood-burning stove and cut through the double-lined metal chimney flue in the attic. In the short term I jammed some insulation in the metal liner and left the rest of the chimney with the ...
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2answers
60 views

Cutting off the tips of roof sheathing cap and metal screws so they don't show?

I am replacing a flat carport roof with PBR metal sheets over 5/8" inch plywood sheathing with underlayment. I know 1/2 inch is strong enough, but I was thinking more of the nailing. Anyway... ...
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1answer
99 views

Why is my roof leaking when it isn't raining?

I've just moved house last week and today have noticed a drip in my dining room. What's odd is that it isn't raining - in fact, today is the first warm day of the year. The "water" is a ...
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1answer
86 views

Horizontal lines on ceiling, roof leaking

My bedroom's ceiling has been leaking (more like dripping) when it's raining or snow melting, and I highly doubt that the old TV satellite dish caused the roof leaking. (Pic 1) What troubles me more ...
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25 views

Wood beam, allowable span

I am doing a big renovation at my place but getting the lumber and all is hard with the pandemic. I found someone with roof wooden I beam that could fit my project but I think they are on the line. ...
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26 views

Roof Drain Stack: Split 3“ pipe into two 2” pipes?

My existing 3" roof drain stack runs through an interior wall that was furred/boxed out a bit to allow for the 3" pipe size. To make this wall flush again I'm wondering if there would be ...
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2answers
52 views

Small blobs of tar on a (5 year old) flat tar and gravel roof

I have noticed several cluster of small blobs of tar on my flat tar and gravel roof which was renovated 5 years ago. I tried to remove one blob (here is a video) and it seemed to be full with no ...
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30 views

Do I need to get these vents re-sealed? Is roofing cement the wrong thing to seal them with?

I bought a home about a year ago, and one of the things that came up in the inspection was that the inspector thought that certain areas on the roof were sealed incorrectly. Not that the seals wouldn'...
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21 views

How to calculate altitude and inclination of a roof in order to not affect sun going to the garden

My house is located in Buenos Aires, Argentina It is facing SW. The front has 8,66 meters. At 3.30 PM March 21, the sun seems to be at 45º of my property. I want to revive garden where the SUV (car) ...
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2answers
165 views

How should I fasten my shed rafters together at the peak?

I'm framing the roof of an 8x10 shed with a loft overhang: The plan I am following has no ridge beam nor ridge board and instructs me to "screw or nail the rafters together at the peak" ...
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2answers
70 views

Carport structural question

I'm planning on building a wooden carport with a lean-to, single slope roof for one car. The approximate dimensions 3.5 meters or 11.5 feet wide x 5 meter or 16.5 feet long. The question is, if I ...
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68 views

Metal roof ROI?

Wondering if there is anyone out there who has completely replaced their asphalt roof with metal (standing seam and/or metal shingles). I want to know how well metal roofs hold up and how (or if) they'...
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2answers
95 views

Are there drawbacks to using solar panels as a roof without asphalt shingles underneath?

If you're working with a new construction or a very old roof in need of full replacement, why not forego asphalt shingles altogether when installing solar panels on the roof? It seems like a waste to ...
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1answer
32 views

Do I need a vapor control membrane inside the roof if I have a breathable underlay outside?

I am a DIY'er working on a cottage in a remote part of the UK. I don't really have access to a professional roofer so I've just been having a go at it myself with some labourers. So we have ...
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19 views

Bowing/rise on exterior roof

The builder states they would either have a structural engineer come in and evaluate, give recommendations. Builder feels that the roof line could be pulled down by strapping down rafters??? There ...
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1answer
60 views

Roof truss with Odd 2x4 T-Shaped Reinforcement. Why is that there?

We needed to replace the air conditioning evaporator coil and air handling element. In this house the cooling element is located inside the attic of the house. And up in the attic space is really ...
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27 views

EPDM roof edging trim

I've laid an EPDM roof on my shed/workshop, and I've now got to trim the edging, using wooden battens - what I'm not sure of is whether to put them on the edge, or underneath: Most of the pictures I ...
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2answers
96 views

What size beams do I need for my shed roof?

Looking for advice on sizing roof beams for a 24’ wide x 24’ deep 4/12 pitch ‘shed dormer’ to cover a deck, no gables - just flat pitched roof structure, using timber or engineered lumber, and using ...
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1answer
73 views

What's the efficiency of extruded polystyrene foam for roof insulation?

I'm renovating a house and I'm looking to insulate it well. My question is about the roof. It's today insulated with 80mm Extruded Polystyrene Foam (EPF) panels, Styrodur. I don't know the product ...
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1answer
48 views

Repair roof flashing that is tucked under gutter rather than over it

I noticed water dripping from behind the gutter. When I climbed up to investigate, I found that a piece of flashing was installed incorrectly. The gutter should be tucked under the flashing. But ...
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1answer
63 views

Are there issues with venting a bathroom fan through the roof soffit?

When I purchased my house, during the home inspection it was indicated that the bathroom vent is simply discharging directly into the attic space. Because we were concerned about mold in the attic, we'...
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1answer
50 views

Snow through ridge vent caused wet ceilings and wall. Rip out and replace or let dry on its own?

We had snow get through a ridge vent during a recent winter storm (Texas, so ridge vents either installed incorrectly or not the kind that can handle snow I guess). After noticing dripping from an AC ...
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3answers
294 views

Is there gutter around this sunroom?

This sunroom is interesting because: The long edge attached to the house is lower below the gutter. Then it has multiple edges with a pointed top (cathedral?). How does the water run off? ...
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5answers
3k views

To rake or not to rake snow off of roof

First time owning a house with a roof that can be raked, It is a shingled roof. The question is - Should I be doing it? We live in Northeast (it's snowing as we speak) and icicles do form on the roof ...
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2answers
88 views

Hanging Punchbag in Cabin - Structural

I have a cabin at the bottom of my garden (photos attached) and am thinking about hanging a punchbag from the roof beams. I absolutely do not want the structural integrity of my cabin compromised but ...
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1answer
31 views

How to repair asphalt roof with no decking

I had a windstorm blow a large tree limb through the roof of my shed and I need to repair it. It's one of those pre-made sheds that the previous homeowner likely got installed on-site from Home Depot ...

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