ᐅ Dimple membrane on terrace with rain gutter – keep it or remove it?
Created on: 26 May 2024 14:15
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UbibubiHello everyone,
I’m currently facing the following question. Around our new build, there is a dimpled membrane installed. Soon, the terrace will be added. The doors leading to the future terrace have masonry roll layers (step flashing) that are flush with the facade (Image 1). In the end, the terrace should look like in the example pictures (Images 2 & 3), meaning you step out at ground level onto the roll layer, then there is a drainage channel, followed by the terrace paving slabs.
The question is, what should be done with the dimpled membrane in that area? If it stays, there would be an ugly gap with the dimpled membrane between the drainage channel and the roll layer, which I don’t want. However, the landscaper insists it’s very important for ventilation that it stays. For example, he has also kept it on another side of the house where he installed stepping slabs. There, it also doesn’t look very nice (Image 4), but it bothers me less than if he did the same on the terrace.
What are your opinions? I have seen many houses like in Images 2 & 3 where there is no dimpled membrane in that area. Is that the “wrong” way to do it or is it harmless to cut the dimpled membrane away there? And how is it best handled at the parts of the terrace where the drainage channel ends? That will only be in the door area. Should the dimpled membrane be kept or removed in the other areas?
Thanks in advance!
I’m currently facing the following question. Around our new build, there is a dimpled membrane installed. Soon, the terrace will be added. The doors leading to the future terrace have masonry roll layers (step flashing) that are flush with the facade (Image 1). In the end, the terrace should look like in the example pictures (Images 2 & 3), meaning you step out at ground level onto the roll layer, then there is a drainage channel, followed by the terrace paving slabs.
The question is, what should be done with the dimpled membrane in that area? If it stays, there would be an ugly gap with the dimpled membrane between the drainage channel and the roll layer, which I don’t want. However, the landscaper insists it’s very important for ventilation that it stays. For example, he has also kept it on another side of the house where he installed stepping slabs. There, it also doesn’t look very nice (Image 4), but it bothers me less than if he did the same on the terrace.
What are your opinions? I have seen many houses like in Images 2 & 3 where there is no dimpled membrane in that area. Is that the “wrong” way to do it or is it harmless to cut the dimpled membrane away there? And how is it best handled at the parts of the terrace where the drainage channel ends? That will only be in the door area. Should the dimpled membrane be kept or removed in the other areas?
Thanks in advance!
Hello everyone,
Since the exterior work has been delayed a bit, the thread is still relevant and I’m reactivating it.
Yesterday, I visited several model homes from one provider to see how the outdoor areas were handled.
I noticed that the dimpled membrane near the gutters was partially removed in some places, while in others it was left in place and silicone was applied over it, as shown in picture 6379. Otherwise, I saw that the dimpled membrane between the exterior wall and the patio slabs was mostly left intact. In other homes, the slabs were laid all the way up to the walls.
How important is this issue? It doesn’t really look very neat. I also asked two landscape gardeners about this – one said it’s very important because of moisture and insurance reasons, while the other said it’s not really that critical.
Since the exterior work has been delayed a bit, the thread is still relevant and I’m reactivating it.
Yesterday, I visited several model homes from one provider to see how the outdoor areas were handled.
I noticed that the dimpled membrane near the gutters was partially removed in some places, while in others it was left in place and silicone was applied over it, as shown in picture 6379. Otherwise, I saw that the dimpled membrane between the exterior wall and the patio slabs was mostly left intact. In other homes, the slabs were laid all the way up to the walls.
How important is this issue? It doesn’t really look very neat. I also asked two landscape gardeners about this – one said it’s very important because of moisture and insurance reasons, while the other said it’s not really that critical.
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