Second bathroom

[OwenoWent]

Hi Guys. I'm not sure if I'm posting this in the right place, so apologies if I've got it wrong.

I have a bit of a problem, and I am after some advise.

The background to my story is that 3 years ago me and my wife self built a dormer bungalow. We didn't have enough money to do both the downstairs and the dormer at the time, so we agreed with our architect to just complete the downstairs but to 'future-proof' the upstairs to easily take the 2 extra bedrooms and bathroom - as per the original plans on the property. Great - we finish building, move in and everything is fine. We are now in a position to slowly start work on the dormer of the property and we're running into a whole load of issues that I (foolishly and naïvely) assumed would be taken care of. As the list continues to grow, I've organised a meeting with the architect for Thursday, where I will ask him to explain him overlooking so many issues. I want to arm myself with all of the facts before the meeting.

Now, I know this is a plumbing forum, so will only bore you with the plumbing shortcomings.

A friend of mine suggested that I check that the original boiler fitted is suitable to take the additional rads and bathroom upstairs. A quick Googling of my Worcester Greenline 30Si Combi Mk IV states it is suitable for small to medium sized properties with 1 bathroom. Not ideal - especially as this will become our main shower. What does this actually mean in real terms? Does it mean I'm looking at having to fit an electric shower instead of a thermostatic one? And will the boiler have enough clout to power the additional rads. (It is currently heating the rads downstairs for 2 bedrooms, lounge, hall, utility and 2 towel rails. It's hot water duties are 1 thermostatic shower, 1 bath, 3 sinks)

Basically, I'm asking in your expert opinions whether this boiler is fit for purpose, when considering the expansion upstairs. I'm 'content' (if not happy) to have an electric shower upstairs, provided the boiler is capable to heat the upstairs, and provide hot water for a sink.

Sorry for for such a long message - I won't start on the lack of soil pipes *sigh*. I'd appreciate any advise.

Thanks again. Owen

 

[glenntaf]

Without knowing the actual heating load I don't want to say for sure but in my opinion I wouldn't worry too much about the heating, it should still have plenty left to heat what you are asking of it. However you are always going to struggle with a combi when you have multiple hot water outlets, especially showers and baths, these work fine when used one at a time but struggle when all used together. If you have good cold water pressure/ flow rate then an unvented mains pressure cylinder with a system boiler would have been a better option., this would have provided you with good hot water flow at multiple outlets. If you say you would be happy with an electric shower I recommend a Mira sport max, although you will need a 10mm cable running in by an electrician

 

[OwenoWent]

Thanks Glenntaf.

Spark's aren't a problem. I know a good one that applies 'mates rates'. Just don't know any plumbers!!

Thanks for the tip on an electric one. Will look into it.

 

[stevetheplumber]

30 kw is going to be more than enough heating output for a normal sized house im assuming were not talking 10 bedrooms here
the boiler will produce enough hot water for two showers but probably not enough for a bath and a shower to run simultaneously all of this is obviously dependent on enough mains flow and pressure
just dont expect it to run huge shower heads or body jets also best if both showers are thermostatic to iron out fluctuations