Shower vent

JohnE222

I've read carefully all of your comments and I have contacted the builder. I want him to either attach the ducting directly to the vent or remove the vent and replace it with a tile. There has also been an issue with noise in the space between the roof tiles and the membrane. I believe that wind has been entering through the roof vent and then blowing around in said space. If the roof vent tile had been connected to the ducting directly, then no doubt the wind perturbation would not arise. I did indeed want to support the builder who in fact is very good and has done much good work for me in the past but he has slipped up here I feel. Thank you all for your comments, even the ones that were slightly insulting.

Furts

JohnE222 wrote: »

I've read carefully all of your comments and I have contacted the builder. I want him to either attach the ducting directly to the vent or remove the vent and replace it with a tile. There has also been an issue with noise in the space between the roof tiles and the membrane. I believe that wind has been entering through the roof vent and then blowing around in said space. If the roof vent tile had been connected to the ducting directly, then no doubt the wind perturbation would not arise. I did indeed want to support the builder who in fact is very good and has done much good work for me in the past but he has slipped up here I feel. Thank you all for your comments, even the ones that were slightly insulting.

Everybody makes mistakes, and when these mistakes are pointed out then the decent thing is to apologise then correct the mistake.

Your case is quite different. This situation is not an error because it appears to be outright bodging. Yet you are defending your builder claiming they are "good". To state the obvious, a "good" builder would have checked their work before handing it over to you and the obvious error would have been spotted. Instead of this you appear to have been fed nonsense information to justify the situation - which is a further indication that the builder is not "good".

However, despite being "good" you are not happy with the vent, nor with the flapping underlay. This obvious contradiction has been pointed out to you. Your response is to say this pointing out is "slightly insulting".

No doubt you are aware that shower ventilation is covered by the Buildings Regulations. This is the Law and the onus is on you to comply with this Law. There is no way your extract would pass a final inspection under the Regulations which in turn raises further questions about what has been going on in your home. The default question becomes has your work been undertaken illegally? In turn one can ask if your "good builder" is implicated in any such illegality.

Again you may consider all this is "slightly insulting". Or is it indeed time for a reality check on what constitutes "good" building and a "good" builder?

Norman_Castle

JohnE222 wrote: »

I want him to either attach the ducting directly to the vent or remove the vent and replace it with a tile. There has also been an issue with noise in the space between the roof tiles and the membrane. I believe that wind has been entering through the roof vent and then blowing around in said space. If the roof vent tile had been connected to the ducting directly, then no doubt the wind perturbation would not arise.

If he has fitted a vent tile designed for a shower vent without cutting the membrane it would either be sticking out of the roof or pushing the membrane inwards by about 6". Once the tile is in place it is extremely simple to fit the pipe. Has he fitted a vent tile as pictured above?
If he removes the vent tile the shower will be venting directly into the loft which is wrong at not what you presumably paid him to do.

If the pipe is tight against the membrane it will not be venting the shower properly. Shower fans move about 100 cubic meters of air per hour. Their low pressure will not push this through a membrane.

Furts

Norman_Castle wrote: »

If the pipe is tight against the membrane it will not be venting the shower properly. Shower fans move about 100 cubic meters of air per hour. Their low pressure will not push this through a membrane.

I second the sentiment, a concern being the fan motor burning out. But all round matters are concerning. OP is defending the builder saying they are "good" yet the underlay appears to be flapping. Might this be so? The answer is yes, because OP has identified the underlay, as the lightest, cheapest, "budget" underlay made under the Harcon brand.

Underlays can flap - I have needed to address this on one of my extensions because it is exposed to high winds. However for OP having the cheapest, budget underlay is not helpful here. Would a "good" builder be fitting the cheapest? Yes if they can get away with this, or if a better product is not specified, or if they can pull the wool over someones eyes. Is this a sign of a "good" builder? Over to OP here.