piping, water filter - renovation - Lowyat Forum

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Sorry for the long post, may I get advise on piping, water tank, water pump and water filter for my home reno.
It&#;s a sub-sale house which is currently non-tenanted, double semi-D about sf built up with 6 bathrooms, 1 powder room, separate wet kitchen and dry kitchen
Major reno done by previous owner in . I was thinking of re-piping (concealed) my whole house and hot water piping to all showers. Reno would also include rewiring (KIV), retile, built-in, plaster ceiling, repainting whole house, change roof tiles, windows/doors.
This home is for own family long term stay >=20 yrs (likely till the end of my life). 3 adults, 3 primary school going children.

The questions marks that has been bugging me :
1. How do I determine if I need to change all piping, both inlet (cold and hot) and outlet?
Current inlet piping (at least the 2-3 pipes I saw on the roof) is uPVC class 6, and copper piping for hot water.
for the existing uPVC : it's labelled KKK UPVC PIPE BS 20mm Class 6
- is uPVC and PVC the same thing? I read it&#;s different, but in Malaysia context seems to be similar)pic below

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2. If I do go ahead and change the piping, what types of pipe should I go with for inlet piping?
Option 1: cold : PVC class 6 or 7 + hot water = PPR or copper or others?
Option 2: full PPR for both cold and hot (it&#;s about 2-3x the price compared to option 1: PVC + PPR?)
Option 3: HDPE polypipe for whole house? (sounds extremely expensive)
Option 4: Buteline for whole house? (sounds extremely expensive)
Option 5: any suggestions? I cant afford to budget the most &#;expensive&#; or&#; best&#; piping available, but I&#;m ok with something better than average and not having to worry about frequent leaking problems and end up hacking the tiles/walls every 1-2 years to fix it.

3. Outlet piping &#; not much local info I could find, should I be particular about what kind of outlet piping I should go with? Same concept as inlet piping?

4. Which type of fitting/joint should I go with? I read from many sifus here that the joints and fittings are really crucial as it&#;s the highest chance of leak if poor quality/poor workmanship (even more crucial than the pipes itself if at least PVC class 6 pipes is used).
Should I go with SS? Copper? or others?

5. What is the big white pipe?



6. I read on LY forum about auto back-up piping (cant seem to find this post anymore, what is this is for?) and non-return valve at water inlet (to prevent dry burn if I install storage heater or solar heater) : I should have my plumber installs this as well in my water system right?

7. Water tank &#; I saw 7 water tanks in at the roof top

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- is this overkill?
- how do I determine if it&#;s still usable?
- if I want to replace it, should I go with poly or SS? I think I&#;ll need at least -L

8. Keep or replace this 7 year old Grundfos? Seem to be working, based on the sound I hear while in the roof and also 1-2 sinks I turned on had high pressure
(please refer next post - restriction of pics I can post due to my newbie LY status)

9. water filter : I&#;m planning to get :
Outdoor &#;sand&#; filter x 1 (something like this tinyurl.com/wpjva9f8 or should I invest in expensive branded ones like GE?)
+ undersink 3M waterfilter for wet kitchen (
+ dry kitchen (
+ LG puricare (
With the dry kitchen 3M model above + LG puricare, should be safe to drink directly even for children right?
Is this adequate?
Any other brands/model recommended?

TQ very very much for any input!





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Dear sifus,Sorry for the long post, may I get advise on piping, water tank, water pump and water filter for my home reno.It&#;s a sub-sale house which is currently non-tenanted, double semi-D about sf built up with 6 bathrooms, 1 powder room, separate wet kitchen and dry kitchenMajor reno done by previous owner in .This home is for own family long term stay >=20 yrs (likely till the end of my life). 3 adults, 3 primary school going children.The questions marks that has been bugging me :Current inlet piping (at least the 2-3 pipes I saw on the roof) is uPVC class 6, and copper piping for hot water.for the existing uPVC : it's labelled KKK UPVC PIPE BS 20mm Class 6- is uPVC and PVC the same thing? I read it&#;s different, but in Malaysia context seems to be similar)pic belowOption 1: cold : PVC class 6 or 7 + hot water = PPR or copper or others?Option 2: full PPR for both cold and hot (it&#;s about 2-3x the price compared to option 1: PVC + PPR?)Option 3: HDPE polypipe for whole house? (sounds extremely expensive)Option 4: Buteline for whole house? (sounds extremely expensive)Option 5: any suggestions? I cant afford to budget the most &#;expensive&#; or&#; best&#; piping available, but I&#;m ok with something better than average and not having to worry about frequent leaking problems and end up hacking the tiles/walls every 1-2 years to fix it.&#; not much local info I could find, should I be particular about what kind of outlet piping I should go with?I read from many sifus here that the joints and fittings are really crucial as it&#;s the highest chance of leak if poor quality/poor workmanship (even more crucial than the pipes itself if at least PVC class 6 pipes is used).5. What is the big white pipe?6. I read on LY forum about auto back-up piping (cant seem to find this post anymore, what is this is for?) and non-return valve at water inlet (to prevent dry burn if I install storage heater or solar heater) :7. Water tank &#; I saw 7 water tanks in at the roof top- is this overkill?- how do I determine if it&#;s still usable?- if I want to replace it, should I go with poly or SS? I think I&#;ll need at least -L8.Seem to be working, based on the sound I hear while in the roof and also 1-2 sinks I turned on had high pressure(please refer next post - restriction of pics I can post due to my newbie LY status)9. water filter : I&#;m planning to get :Outdoor &#;sand&#; filter x 1 (something like this tinyurl.com/wpjva9f8 or should I invest in expensive branded ones like GE?)+ undersink 3M waterfilter for wet kitchen ( 3M + dry kitchen ( 3M + LG puricare ( LG puricare With the dry kitchen 3M model above + LG puricare, should be safe to drink directly even for children right?Is this adequate?Any other brands/model recommended?TQ very very much for any input!

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