In roof solar panels for roof tile repair/replacement

[mjheathcote]

We have a bit of a problem with our house roof.
Following a leak around the chimney stack, and getting it repaired, we have discovered our south facing roof is basically 'end of life'.
This is a bit of a shock, the house is less than 20 years old.
Artificial stone tiles were fitted, a combination of concrete and fibreglass.
The north side is fine, which we can see, but the south side we can't see due to the house position. The south side gets all the sun, naturally, but also all the weather as this comes down the valley and hits the south side.
Getting scaffolding to repair the leak around the chimney stack has enabled a clear view, and about 20 tiles are either broken, or disintegrating. The north side, hardly anything!
We agreed to get the broken tiles replaced as the local roofer took an identical roof off a house in the area, due to a membrane problem, so has tiles to match.
Unfortunately starting the job today with yet more scaffolding down the south side, more like 60 tiles will be required and I'm awaiting the roofers opinion, and whether he has sufficient or it's a non starter replacing individual tiles.
My thoughts are either:

1. Complete new roof. No idea of cost, but about 85 squ.m
2. Just replace tiles on South facing, after all, we can't see it to notice the difference.
3. Instead of fitting new tiles to the south side, fit solar panels instead. Flush fitting so better wind resistant and pest resistant.

No experience or idea of cost at the moment. After 25 years of house ownership never had to spend a penny before!

 

[mjheathcote]

 

[sionie1]

PV Slate solar slate tile

PV Slates generate solar PV power from a traditional looking roof slate

www.gb-sol.co.uk

Solar tiles?

 

[stikey]

They stopped manufacturing those tiles because they cracked so easy did mine last week flush in roof with black 385w modules

 

[mjheathcote]

PV Slate solar slate tile

PV Slates generate solar PV power from a traditional looking roof slate

www.gb-sol.co.uk

Solar tiles?

I've seen those, but as we can't see the south side, no need to spend loads on a nice aesthetic looking solution.
I'm simply thinking if we do need to replace all the tiles on the south side, instead of paying for tiles, pay (partly) for in roof solar.

 

[mjheathcote]

They stopped manufacturing those tiles because they cracked so easy did mine last week flush in roof with black 385w modules

Tell me more!

 

[midlifecrisis]

Go for it, you'll get pittance of a feed-in-tarrif but if you have to retire the roof in standard slate you might as well go for the PV slate. Energy prices will only go one way and you'll sleep better knowing that Greta doesn't hate you.

 

[stikey]

gse in roof system 1750mm x1050mm 360-385 watts per module what s the length of roof & hight from eves to ridge

 

[stikey]

give me the measurements and i will calc out a system size for you

 

[sionie1]

They stopped manufacturing those tiles because they cracked so easy did mine last week flush in roof with black 385w modules

That's a bugger.....

 

[mjheathcote]

give me the measurements and i will calc out a system size for you

12.5m long by 3.4m to chimney. Another 150mm available to start of the ridge tile away from chimney. Vent stack as shown in picture half way along.
Thanks!

 

[stikey]

System Summary Physical Roof Orientation0° Pitch35° Location RegionSevern (East) Array Width8.00 m Height1.00 m Surface Area14.89 m2 Weight218.65 kg WeightM214.68 kg Panel - JA Solar 365W Mono MBB Percium Half-Cell All Black Short Frame MC4 Panel Specifications Number required8 Rating365 Wp Length1,769 mm Width1,052 mm Voc at STC41.13 V Vmpp at STC33.96 V Impp at STC10.75 A Isc at STC11.3 A Array Specifications Array Power2,920 Wp Inverter - Solis Energy Storage 3kW Hybrid 5G Inverter with DC switch Phases1 No. of MPPT2 Rated AC Power3,000 W Max DC Current27.52 A Voltage600 V PP Voltage Min120 V Max520 V Electrical - Solis Energy Storage 3kW Hybrid 5G Inverter with DC switch Quantity1 String Quantity1 Strings1 * (1x8) String Voc at -5 °C355.89 V String Vmpp at 60 °C238.40 V String Vmpp at -5 °C300.21 V Input Isc at 60 °C11.5 A Distance to Array12 m Cable Area4 mm2 Voltage Drop0.75 % Storage - Fox ESS LV5200 5.12kWh 48V Battery Module System TypeFull Hybrid Type of BatteryLithium Ion Usable Battery Capacity5120 Wh Voltage48 V Max Charge Rate (5 Minutes)5120 W Max Discharge Rate (5 Minutes)6000 W PV Performance Estimation A. Installation Data - New MCS Calculation Installed capacity of PV system - kWP (stc)2.920 KWp Orientation of the PV system - degrees from South0° Inclination of system - degrees from horizontal35° Postcode region5E B. Calculation kWh/kWp (KK) from table854 kWh/kWp Shade factor (SF)0.88 Estimated annual output (kWp x KK xSF)2,494 kWh � MCS Wind Loading Calculation Wind Zone: 2-ST Peak Pressure: 746 Pa Altitude Correction Factor: None Topography Correction Factor: None Peak Velocity Pressure: 746 Pa Pressure Coefficient: -0.5 Wind Pressure: -504 Pa This calculation excludes an additional saftey factor. � Snow Loading Calculation Snow Load: 500 Pa Altitude Correction: None Pitch Adjustment: 0.800 Adjusted Snow Load: 400 Pa

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[mjheathcote]

System Summary Physical Roof Orientation0° Pitch35° Location RegionSevern (East) Array Width8.00 m Height1.00 m Surface Area14.89 m2 Weight218.65 kg WeightM214.68 kg Panel - JA Solar 365W Mono MBB Percium Half-Cell All Black Short Frame MC4 Panel Specifications Number required8 Rating365 Wp Length1,769 mm Width1,052 mm Voc at STC41.13 V Vmpp at STC33.96 V Impp at STC10.75 A Isc at STC11.3 A Array Specifications Array Power2,920 Wp Inverter - Solis Energy Storage 3kW Hybrid 5G Inverter with DC switch Phases1 No. of MPPT2 Rated AC Power3,000 W Max DC Current27.52 A Voltage600 V PP Voltage Min120 V Max520 V Electrical - Solis Energy Storage 3kW Hybrid 5G Inverter with DC switch Quantity1 String Quantity1 Strings1 * (1x8) String Voc at -5 °C355.89 V String Vmpp at 60 °C238.40 V String Vmpp at -5 °C300.21 V Input Isc at 60 °C11.5 A Distance to Array12 m Cable Area4 mm2 Voltage Drop0.75 % Storage - Fox ESS LV5200 5.12kWh 48V Battery Module System TypeFull Hybrid Type of BatteryLithium Ion Usable Battery Capacity5120 Wh Voltage48 V Max Charge Rate (5 Minutes)5120 W Max Discharge Rate (5 Minutes)6000 W PV Performance Estimation A. Installation Data - New MCS Calculation Installed capacity of PV system - kWP (stc)2.920 KWp Orientation of the PV system - degrees from South0° Inclination of system - degrees from horizontal35° Postcode region5E B. Calculation kWh/kWp (KK) from table854 kWh/kWp Shade factor (SF)0.88 Estimated annual output (kWp x KK xSF)2,494 kWh � MCS Wind Loading Calculation Wind Zone: 2-ST Peak Pressure: 746 Pa Altitude Correction Factor: None Topography Correction Factor: None Peak Velocity Pressure: 746 Pa Pressure Coefficient: -0.5 Wind Pressure: -504 Pa This calculation excludes an additional saftey factor. � Snow Loading Calculation Snow Load: 500 Pa Altitude Correction: None Pitch Adjustment: 0.800 Adjusted Snow Load: 400 Pa

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Blimey!
I know the roof is perfectly south facing, 30 degrees, and zero shadowing. Location sunny Yorkshire!
Such a system half the roof?
I assume this is your business?
What sort of cost?
Thanks!

 

[MaserMike]

Darn sorry to hear about your roof damage…. To give you an idea of costs, for real slate of 85M2 you are looking at around circa £2800 or less for new cheaper Spanish slates for 600x300 with just over 1100 tiles required (of course totally depends on type and size you want), then on top will be wooden batterns, ridge tiles and lining, copper nails etc. etc. Then labour and scaffolding etc.

So wouldn’t be surprised if you don’t get much change from £8-£10k, your roofer may be able to quote you a decent price. Natural slate should last a very long time, considering it’s made from natural rock….

The previous year in 2020 part of my old (1895) property roof had to be repaired as the lead flashings had failed which were old. There was also a 26week wait for wooden batterns, hopefully supply chain issues now all sorted because of Covid….

I would assume your roof trusses are of a decent strength to cope with heavier tiles, as your existing ones are concrete. No idea if the solar ones are lighter or heavier?

 

[mjheathcote]

Darn sorry to hear about your roof damage…. To give you an idea of costs, for real slate of 85M2 you are looking at around circa £2800 or less for new cheaper Spanish slates for 600x300 with just over 1100 tiles required (of course totally depends on type and size you want), then on top will be wooden batterns, ridge tiles and lining, copper nails etc. etc. Then labour and scaffolding etc.

So wouldn’t be surprised if you don’t get much change from £8-£10k, your roofer may be able to quote you a decent price. Natural slate should last a very long time, considering it’s made from natural rock….

The previous year in 2020 part of my old (1895) property roof had to be repaired as the lead flashings had failed which were around old. There was also a 26week wait for wooden batterns, hopefully supply chain issues now all sorted because of Covid….

I would assume your roof trusses are of a decent strength to cope with heavier tiles, as your existing ones are concrete. No idea if the solar ones are lighter or heavier?

Thanks for this.
I must admit, a Google calc did throw out a ball park £10k for retiling based on the area.
Solar PV has been on my mind, what with the current price increases, the Mrs getting a plug in hybrid (can be charged during the day using solar), our combi gas boiler compatable for adding a pre-water cylinder (again using solar PV to heat up) etc, and possibly then a battery system to store what's left (if any after that).

 

[MaserMike]

Thanks for this.
I must admit, a Google calc did throw out a ball park £10k for retiling based on the area.
Solar PV has been on my mind, what with the current price increases, the Mrs getting a plug in hybrid (can be charged during the day using solar), our combi gas boiler compatable for adding a pre-water cylinder (again using solar PV to heat up) etc, and possibly then a battery system to store what's left (if any after that).

No problem and hope you get sorted, will be interesting to see the outcome (hopefully positive one for you)

It certainly would make sense to start using solar PV and other energy efficient/storage stuff….

 

[stikey]

put 10x 385w ja black frame mono modules gse flush in roof 1 row 10,520mm long 1,769mm high 3,300 kw per year 5kw fox battery dc cupeled and a solis high bread 3-3.6 inverter inverter plus zapi ev charger use existing tiles to finish round and you will have spares for the rest of the roof after
tile / slate modules are **** don t touch them

 

[stikey]

 

[mjheathcote]

View attachment 99196

Thanks.
The roofer is coming over today.
Unfortunately I've been working away last few days but lifting the good tiles to enable the bad tiles to be replaced, is simply breaking the good tiles. All the tiles have had it.
So I'll be asking whether they have experience with working with flush solar panels.
This could all work out rather expensive :-(
So until I have figures I don't know whether adding solar at the same time, even if the best time to do it, is affordable overall.

 

[RodTungsten]

On the Spyder Store. Saved on hard to source roof tiles: