Dry ridge, what am I missing?

[Frane Selak]

When I built my brick shed I bedded the ridge tiles down with mortar but for one reason or another I had a small leak when it rained a few months after. everyone who advised me said don't mess about with mortar and get a dry ridge kit. (the roof is standard concrete tiles.

So today I fitted this one, I was sceptical when I opened the box but fitted it anyway as its only about 4M long and its only a shed.

https://www.amazon.co.uk/dp/B00UNOOV4E?ref=ppx_yo2...

The reason I was sceptical is because the fabric stick down cover was like a gauze but I though oh its probably just a breathable material like roofing felt, I do know that you shouldn't take any felt over the ridge nowadays but leave a gap at the top so it can breath. (even though the felt is breathable anyway) So I thought it must be fine.



But I've just tried running a spare piece under the tap and it leaks through, admittedly this is with the force of the water coming straight out of the tap and some of the water did flow off the top end. So is this likely to be waterproof enough to stop the rain do you think or is it not fit for purpose, obviously the ridge tiles themselves do nothing now as there are gaps between each one.

I didn't put any felt on the roof as its just a shed.

[Kwackersaki]

Don’t you have the plastic clips installed between each of the ridge tiles? These prevent water reaching the membrane.

[Frane Selak]

Kwackersaki said:

Don t you have the plastic clips installed between each of the ridge tiles? These prevent water reaching the membrane.

I do but they can be fully waterproof, they just but up against the ridge tiles and they have holes in them where the clips and screws go through them. I'm not saying they do nothing but they cant be fully waterproof. but maybe those along together with the membrane do enough to keep the water out. I won't be impressed though if any water ingress is more than my failed attempt at mortaring them on.

[Kwackersaki]

Frane Selak said:

Kwackersaki said:

Don t you have the plastic clips installed between each of the ridge tiles? These prevent water reaching the membrane.

I do but they can be fully waterproof, they just but up against the ridge tiles and they have holes in them where the clips and screws go through them. I'm not saying they do nothing but they cant be fully waterproof. but maybe those along together with the membrane do enough to keep the water out. I won't be impressed though if any water ingress is more than my failed attempt at mortaring them on.

Yes, I must admit that we’ve recently had a full re roof with a dry ridge system and I do wonder in a torrential downpour, whether they are fully waterproof.

[dobly]

The tiles and ridge unions provide the waterproofing and weather protection, the ridge roll provides ventilation.
If rain reaches the ridge roll, the tiles/ridge unions will have moved/cracked/failed. If they are intact, they will keep weather out and the roof will be healthier for the added ventilation.