Hedge near terrace and garage, problems?

Hello everyone,
we are planning our fence together with the neighbor.
We are now leaning towards a hedge in combination with granite pillars.
What still worries me a bit is the immediate proximity of the hedge to the paved area and garage.

How do hedge roots spread?
Do they also grow under the curb through gravel and eventually lift the paving for me?
Is there anything you can do about it? Google says there are root barriers, are these any good? If roots can already penetrate concrete, then surely through a barrier as well?

As a hedge, we are considering yew and laurel. Are there any experiences regarding roots, care, diseases...

Thanks in advance to everyone.

How do hedge roots spread?

It depends on the plant. If you have paving "next to" it, you should choose plants whose roots grow more in depth rather than in width. But also with regard to growth, you should make sure that they remain slender if there is not much space.

As a hedge, we are considering yew and laurel.

Yew is a plant with a cemetery character. And it grows very slowly. Likes acidic soils. There are more types of laurel than one would like. I recommend googling on planting portals or hedge sites on the web.

How do hedge roots spread?

If the hedge is planted correctly, damage to the terrace caused by roots is unlikely over a very long time. If people bury the trees of the hedge with root tips bent towards the terrace, damage will certainly occur soon.

As a hedge, we are considering yew and laurel. Are there any experiences regarding roots, care, diseases....

Yew has added value for native birds. The fruits of the yew are inedible to toxic – some people are worried about their children because of this. Laurel is like a desert for most insects and birds. Some choose laurel exactly for this reason – and because it is cheap and grows quickly. If I were faced with this choice, I would prefer yew, but I especially like beech hedges, which retain their foliage in winter and remain quite dense.

I would recommend privet - depending on the variety, it stays green in mild regions even in winter. It grows very narrow and slender, blooms beautifully if left alone, but can also be pruned well. It roots where it gets water. It probably won't do that under the terrace.

As long as there are no deer nearby, they love the shoots of privet.

Yew is a plant with cemetery character.

I thought Thuja is the cemetery hedge...