ᐅ Can you roof an attached structure – connecting roofs at the intersection?

hampshire schrieb:

Is there only one visible downpipe at the corner of the house gutter, or is there another one at the other corner? If so, interrupting the gutter would not be a problem, and you wouldn’t have large amounts of water on the porch roof.

Hello hampshire!

Thank you for your reply! There is indeed a downpipe on the other (left) side of the same eaves line (of the house). However, it is only decorative. If the gutter’s slope is adjusted, it could be put to practical use. Still, the main question remains: how do you connect the two roofs? The 10cm (4 inches) gap will not be enough to fit the ridge tiles of the porch under the main roof at the junction.

Best regards, Fred.

Mottenhausen schrieb:

Even though it’s frustrating, wouldn’t it be best to remove the small roof frame, take down one or half a row of aerated concrete blocks, and then put the roof frame back up?

Hello Mottenhausen

Understood! However, this is not so easy because of the ring beam I placed under the purlins. I don’t want to damage it by taking it down.

Best regards, Fred.

11ant schrieb:

That would actually take the design disaster to an entirely new level.

All in all, a Pyrrhic victory, just to avoid making the porch roof frame flatter or, as my predecessor suggested, lowering it.

Ring beam and windows—that sounds more like the main house than the porch. So there should have been more, not less, space between the two heights (?).

Just admit that you miscalculated the porch ridge height instead of coming up with ridiculous contortions.

Hello 11ant!

Now I have a bit of time to analyze your responses.

1.)
So far, you have not offered any solution to the problem. From the start, you have given up and probably can only work with ideal standard conditions.

My initial question was how to connect the roofs! The original poster has likely already analyzed and ruled out simple modifications that would allow standard solutions.

In detail (in your words):
Making it flatter: “Not possible,” since the total height is already only 60cm (24 inches).
Lowering it: “Not possible,” since that would require demolishing the ring beam.

2.)
I would always assume that the original poster has not confused fundamental details, especially since they remain consistent. Is it really plausible that the original poster has forgotten that a ring beam was installed, or that window and door openings including lintels were created??? And it fits with the fact that the height difference has increasingly decreased!

3.)
I don’t need to twist myself into knots to figure out the porch ridge height. I modeled the entire porch in AutoCAD (Computer-Aided Design) and crafted the timber accordingly.

Perhaps the expert is running out of ideas here—creative solutions for top places require different answers.

Wow, heavy artillery!

@11ant is right. Either remove the ring beam and rebuild it deeper, or raise it significantly higher with the roofing felt so that it can be properly integrated with the existing roof structure. As it stands, it's problematic in every way. Alternative: standing seam roof or bitumen membrane.

Perlfred schrieb:

So far, you haven’t made a single suggestion to solve the problem.

Actually, there was a suggestion:

11ant schrieb:

Dismantling and rebuilding with a shallower pitch seems to me the most cost-effective solution.

In the photos, I estimate the gable triangle has a pitch between 35 and 40 degrees, which could certainly be made shallower without affecting water or snow drainage. The ring beam could remain in place, the gable triangle would need to be re-cut, the ridge beam of the porch lowered, and the rafters reattached accordingly.

(My) suggestions don’t always match the questioner’s preferred approach—I’m not a conductor at a request concert.

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Respect for the effort put into this. Normally, in a case like this, the ring beam is installed at the same time as the lintel – at lintel height. This is all much oversized now for the small porch? Even screwed to the wall, what you built there is rock solid. I also understand now why a dismantling is out of the question.

I don’t see a proper integration of both roofs, since the peak of a dormer is usually an unattractive metal finish that, matched to the dormer size with a long valley, is less noticeable. But in your case, only this critical section remains, and I think it’s just not possible to make it look nice.

One solution to connect both roofs would be the option shown in the picture below. But this will be extremely complicated to build, and whether it will look good in the end… doubtful…