installing beams n trusses... not much profit in it for them...

Now wanna find solar company that is willing to do this

i think around 1800km... mg4

without aircon your ceiling very hot? then imho... first thing to consider is reduce heat into your house... consider these...

roof ventilation... bubble foil insulation below zinc roof... orchid netting above roof... heat reflecting roof paint... insulated zinc roof as mentioned

next is leakage of cold air from inside the house... no point keep cooling but cold air keep escaping...

Hmm ive never tried touching the ceiling during the day. Will try later see how. But eventually will still need solar as we phase out all the ice car at home for an EV in the coming future

This post has been edited by Boy96: May 25 2024, 03:34 PM

sure... just sharing some low hanging fruits... simple things you can do immediately...

Perhaps you could engage a roofing contractor to build a beam and truss follows solar panel installer's requirement on top of you current metal roof.

Something like this:



This post has been edited by gaman: May 25 2024, 04:10 PM

If I am not mistaken, there are two types of installation you the roof of your kind. Yours should be involving removing the original screw that screw the roof and screw the railings to the same hole.

There is another way which is using kliplok roof clamp. But ur roof doesn’t look like the kliplok roof. They usually clamp on the part with truss. But I don’t think this is suitable for your case.

Both involving the same thing, which allows the frame to be installed for solar.

For method one, as ur wood is abit old, when they screw back, it may crack. And it’s not worth taking the risk to install.

Usually for solar companies, they don’t change the structure of your roof. They only install on top of existing roof. As they are not expert in redesigning the roof. They have to bear the responsibility if they do that. And of course it incur additional charges.

Better leave the roof to the experts. , aka get a new roof first.

Yeah I agree it's pretty low.

What type of inverter are you using?

It’s hard to determine, and this is one weakness of solar panels on string that I notice.

As u cannot rely on Tnb reading, (it’s a nett reading) after usage.

You need to identify it from your inverter app to see the total production.

From The total production, you minus the Tnb export. Thst is your morning consumption. The tricky part is to determine if the morning consumption if it tallies with the your actual usage. There are ways but quite tedious.

Meanwhile, from micro inverter system, you can see individual panel production. From there you can compare and rule out any problem in the harvesting part. The calculation also become simpler.

Goodwe

From the condition of your roofing, more less about time for change out also la. Better change out before a heavy storm and gust hit.


I suggest la you engage a good awning roofing contractor, they will help you redo these roofing with galvanized C channel. At that point also you tell them you need reinforcement for solar panel saja la. Usually they will do double back to back C channel to support the weight of these panel

Pasang sendiri saja, do grid interactive UPS style no export ok liao. I’m been enjoying close to 3 years already.

Actually in Kuching or Sarawak, their electric charges is still very very cheap. Like 30 cent per kWh at the highest rate. So there is little point going Solar there unless you are really a big consumption.

Peninsular is 57sen/kwh for residential on the highest tier....nearly double...

TNB domestic rate

True also la, Sarawak has more than excess electricity if I recall correctly. But yea, if you say consistently above 600-1000, then it’s worth it la. My fren did check out one Gsparx and quoted 47k for 9.5kWp, 8kW inverter. I think it’s abit too expensive la. But Sarawak ba

id suggest get a good roofing guy do inspection first... dont straight out ask to replace

your red red zinc looks ok... as for wood, the pre war/70s build uses normaly uses good strong wood... nowadays the wood quality very bad... i once climb up into the attic for diy, my previous new house almost fell through the ceiling because wood broke when i stepped on it... yours maybe a few piece just need reinforcements...

if i were you, and i have to get a new roof... i would build it over the old roof and make it strong enough for solar... your solar econs now include new roof you have to decide worth or not

Actually in Sarawak with 31.5 cent per kWh, it’s okay to buy direct. And don’t need solar. Coz even if u use 2000 units, it’s just about rm600++. Here if use 2000 units, it’s about 1.3k.

Yea I guess Sarawak is really blessed then. Maybe people over there should adopt EV more la