ᐅ What is the recommended slope for a terrace facing west?

Hello,
we plan to start building the terrace next week. We are getting 1.2 x 1.2 m (4 x 4 feet) ceramic tiles. The terrace will measure 9 x 4.2 m (30 x 14 feet).
Both the living room and the kitchen have sliding doors that provide level access to the terrace. There will be a small step of 2 cm (0.8 inches) once the tiles are installed. The terrace faces west.
The DIN standard requires a drainage channel in front of the sliding doors. I would prefer to omit this. What slope should the terrace have? 1% or 2%? I’m leaning towards 1%. The rest of the property is on level ground, with no slope.

Stefan67422578 schrieb:

Hello,
we plan to start building the terrace next week. We will use 1.2x1.2m (4x4 feet) ceramic tiles. The terrace measures 9x4.2m (30x14 feet).
Both the living room and kitchen have ground-level access to the terrace through sliding doors. There is a small step of 2cm (0.8 inches) once the tiles are installed. The terrace faces west.
The DIN standard requires a drainage channel in front of the sliding doors. I would prefer to omit this. What slope should the terrace have? 1 or 2%? I’m leaning towards 1%. The rest of the property is flat with no slope.

Hello,
there are good reasons why the drainage channel is specified in the DIN standard. Whether a slope of 1 or 2% is used is less important; the purpose is to avoid standing water, which the channel helps to drain away.
Trust me, we also have sliding doors facing west, and I’m very glad we installed the drainage channel.

Aloha_Lars schrieb:

Hello,
there are good reasons why the gutter is specified in the DIN standard. Whether it is a 1% or 2% slope is irrelevant; it’s about preventing standing water, which the gutter is meant to drain.
Trust me, we also have a sliding door facing west, and I’m very glad to have the gutter installed.

Hello,

I completely agree here!
We also have a terrace about 10 x 4 meters (33 x 13 feet) and used a 2% slope.
When you end up "rinsing" your terrace almost daily because the kids make it dirty, you’ll be glad that the water drains almost on its own.
And when the first heavy rainstorm hits — which is becoming more intense — you’ll be thankful to have either a gutter installed or a proper slope.
The 8cm (3 inches) height difference is hardly noticeable.

Trade associations recommend a 2% slope. A 1% slope is definitely too little. Especially if you do not want a drainage channel, you cannot have too much slope.

We are currently working on our terrace as well, with a similar size to yours.
We can only do without the gutter on the east side because it is covered! The smaller terrace on the west side, which is not covered, will definitely have a gutter. Otherwise, I believe it would be regretted in everyday use and it would also not comply with standards (DIN). In case of warranty claims or insurance matters, you would end up covering the costs yourself, as the work would not be done professionally.

In the end, I actually find some gutter designs not unattractive at all! Unfortunately, they also cost quite a bit, around 300 EUR (approximately 320 USD) per meter (3.3 feet).

netuser schrieb:

In the end, I actually find some gutter solutions quite stylish! Unfortunately, they also cost a lot, around 300 EUR per linear meter (about 100 USD per linear yard).

At the big orange home improvement store, you can get drainage channels for just a few euros (dollars) ;-) I installed them myself, and they work great.