Said It Here

How to fix a broken piece of cement by the garage door

A broken piece of cement at the corner of a garage door creates an open gap that foam and caulk alone may not permanently solve. Homeowners facing this issue need to know whether they can patch it themselves with standard exterior sealants or if the damage requires hiring a masonry contractor.

Overview
People affected3 accounts across 2 forums
Workarounds found4 items attempted
Community agreement9 total upvotes

What people tried

Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.

Found another way around this?

Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.

  1. 1
    Filling the gap with hydraulic cement pushed in like putty and smoothed
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  2. 2
    Using a backer rod in the gap followed by quad max caulk
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  3. 3
    applying a temporary weatherproofing patch until a permanent repair can be made
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  4. 4
    trimming the siding so it sits off the roofline
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Tried another approach not listed above?+ Share your workaround ↑

In their words

Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.

r/HomeMaintenance2 people · September 2026

“Looking for some insight on how best to fix the trim pieces on my house? Some of the pieces have rotted away and others require sanding and a fresh coat of paint.”source ↗

“The trim pieces are recessed into the stucco - how best to remove and fix?”source ↗

komkracha · r/HomeMaintenance · 5 upvotes

“New home owner here, I noticed this gap at the exterior top right corner of our garage door.”source ↗

“The other side is flush and caulked but it looks like a piece of cement broke off here on the right.”source ↗

“Can I fill the gap with foam and then caulk it with OSI Quad Max?”source ↗

“Or let me know if I need to get a masonry contractor involved instead.”source ↗

spedl · r/HomeMaintenance · 2 upvotes
r/Roofing1 person · October 2026

“I was on my roof today and noticed some deterioration on the siding that wasn’t visible to me from the ground. What would be my options to address this?”source ↗

“I’d be happy with a temporary that would last me until Spring before doing a more permanent fix.”source ↗

DueAdvertising5726 · r/Roofing · 5 upvotes

Where this came up

People with this problem also raised