Hi the house was built with wrong R4.0 Ceiling and R2.5 Wall
Lately We found the faulty insulation.
The builder said to top up existing faulty Ceiling insulation with correct R4.0.
Any suggestion on the faulty and non compliant R2.5 Wall insulation of the house?
Underspec Ceiling Insulation is R2.8 + overlay another R4.0 is what they said they will do.
House was built 1 year old when we discover this so its warranty.
Then they said this is enough as rectification of faulty material in their build.
Even said making the Ceiling Insulation double will make the house as 6 star rating.
Before they said the house is not STAR rated as designed as DTS only (deemed to satisfy)
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