Electrical Savings After Insulation Install

Simple (cheapish) insulation measures like the one shared by Rye are quite likely a good investment for anyone using aircon during the day. Even if there's no landlord to share the initial cost with it would still generate a decent return on investment over time.
More expensive measures, like installing double glazing, would in my view be something to consider only for a new build unless you'd need to replace the windows anyway in an existing house. A roof overhang (or an awning) seems something worth considering also. Cavity walls and a separated entry hall would be effective also in keeping the heat out, but the former might take a very long time to recoup the investment while the latter might make your asawa balk.

 

I have installed Imac uPVC roof sheets on my new house, these do not heat up the same as metal does, I would even suggest no insulation is required under this, more expensive than the sheet metal available, but there is so many benefits to this, of course this is only viable for a new build or to replace an existing corroded steel roof, originally this was intended for commercial buildings. The savings on not having to provide insulation and the labour costs involved in this, make it viable to install on a house, it comes in much the same profiles as steel roofs, see link; IMAC uPVC Roof Corp. Thermoplastic uPvc Roofing Philippines (dngroup.com.ph)

 

Dave...where did you source the panels from? I went with the "best quality, best gauge" metal roofing for the second floor and it has already started to fail in spots; is there a warranty?

Much thanks and my best always.

Shawn

 

DN Steel in DGTE part of the Phil South group, 3 month supply time but it was closer to 9/10 weeks, the downside was the crating and freighting charge that was plus 30K, you give them a rough roof plan and they work it out for you, my roof coverage is 200m2 but at the 45 degree pitch it will be close to 300m2 of material and the cost overall was 216K that included ridge and hip capping, all Tek screws, silicone and blind rivets, everything required to fit, the material comes in various thicknesses but I chose the 1.5mm which I would say is perfectly adequate for a domestic property, a fat basket like me cannot distort the panels when I stand on them and no damage is even likely when installing, it really is a very resilient material, the biggest sheets were 7.1mtrs but easily handled with two men, I don't know much about metal roofing, but with this Imac it has a capillary break down the side at the overlap, when my workers were installing it they said they can stand with their bare feet on it even in the midday sun and it is quite comfortable to them, we all know you cannot do this with metal.

Dave

 

This is similar to the CHB issue. Steel is a very good conductor of heat. As one side heats up from the sun it quickly conducts the heat into the steel material and radiates it out the other side into the home. The plastic conducts much less heat so the suns energy radiates back into the exterior air before much heat gets into the material and less into the home.

People from first world economies are not aware of the suns radiant heat as an issue. The issue is more about the exterior air temperature.

 

So many good points for builders in this country - perhaps a guide for people to buy would be useful. I don't know if the country has any building standards' regulations (LOL) but people starting to build now need to think carefully about incorporating your advice on CHB, septic tanks, roofing and other issues you kindly brought to our attention.