Apr 02, 2020 10:09 am
I recently got the pricing back from my builder. We are building a double story house which has east to west orientation and the master bedroom is planned in the south-west side of the house. He has also suggested me to go with Axon type cladding instead of brick? (refer image)
I would like to know if the insulation suggested by the builder is good enough for all season?
I am missing something when it comes to addl insulation required for south west side of the house?
how much will axon cladding help me with insulation as compared with brick ?
Re: Insulation - QLD weather5
Apr 02, 2020 11:16 pm
The Your Home website recommends a minimum of R 4.1 for the ceiling, & R 2.8 in the walls.
2.5 batts will fit in a standard (90mm) stud wall, & will get you to that minimum recommended R value, so I'd recommend you do that if possible. As it's pretty much impossible to upgrade wall insulation at a later time.
I'd consider reflective foil insulation in the western walls, as they bear the brunt of hot afternoon summer sun. I hope you've got plans to shade the master bedroom window. A SW windows could get a lot of sun in summer evenings.
Increasing the ceiling insulation shouldn't cost too much, although if it's too costly for you, it could always be done at a later time.
I'd prefer to use a lightweight cladding instead of brick, as it has lower thermal mass. Brick will heat up during the day, & will take longer to cool down, due to its thermal mass.
Re: Insulation - QLD weather6
Apr 03, 2020 1:57 pm
Thank you so much ddarroch.
So, I will ask him to provide a quote for the following
1. R4.1 for the ceiling in all living areas of the house
2. R3 in the walls - we are going with lightweight cladding.
3. Sarking in the ceiling
4. reflective foil insulation the SW side of the house.
Am still learning the terms, is Sarking an additional requirement to having R4.1 batts in the ceiling?
Sign in or Join to reply to this Topic
sgaitesAdvice on weather proofingAdvice on weather proofing
Thanks mate. Here's some better photos. The guy that put this up did a lot of his own stuff, as I'm discovering. The narrow wall top (110mm) should be easy enough to put…
oldchippyHow long can timber framing be exposed to weather?How long can timber framing be exposed to weather?
I wouldn't cover it now with plastic. Recon it would make it worse with no ventilation.