Green Building Forum - PHPP question - easy to change building orientation? Mon, 12 Oct 2026 22:52:31 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 PHPP question - easy to change building orientation? https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265570#Comment_265570 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265570#Comment_265570 Wed, 07 Feb 2018 21:50:03 +0000 RobinB PHPP question - easy to change building orientation? https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265573#Comment_265573 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265573#Comment_265573 Thu, 08 Feb 2018 00:35:50 +0000 djh
You'd have to change the orientation of each window individually, for example.]]> PHPP question - easy to change building orientation? https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265577#Comment_265577 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265577#Comment_265577 Thu, 08 Feb 2018 07:23:21 +0000 gravelld PHPP question - easy to change building orientation? https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265580#Comment_265580 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265580#Comment_265580 Thu, 08 Feb 2018 08:35:56 +0000 Nick Parsons PHPP question - easy to change building orientation? https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265587#Comment_265587 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265587#Comment_265587 Thu, 08 Feb 2018 10:21:31 +0000 RobinB Posted By: Nick ParsonsWelcome back, RobinB! I was thinking a few days ago about the long absence of some of the 'old' names.
Thanks Nick, I finished building our house and we've been in it 5 years already. On the whole very happy though I should have taken the Passivhaus design course before, not after! I've always been very grateful for the help and sensible advice on this forum, and to Keith for keeping it going.]]> PHPP question - easy to change building orientation? https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265588#Comment_265588 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265588#Comment_265588 Thu, 08 Feb 2018 10:22:45 +0000 RobinB Posted By: gravelldSounds like a good idea for an add-on.
I'm sure it would be if it's not there already!]]> PHPP question - easy to change building orientation? https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265593#Comment_265593 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265593#Comment_265593 Thu, 08 Feb 2018 12:09:57 +0000 djh PHPP question - easy to change building orientation? https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265597#Comment_265597 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265597#Comment_265597 Thu, 08 Feb 2018 13:43:47 +0000 Doubting_Thomas
NOTE: You have to unprotect the sheet if you want to do this outside of the official yellow boxes, so depends where you choose to place these values.

As to why - I can certainly see how there might be slightly different configurations of the building plan that respond to orientation. We had no choice on our plot as there were so many other restrictions like underground services, TPOs etc.]]> PHPP question - easy to change building orientation? https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265600#Comment_265600 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265600#Comment_265600 Thu, 08 Feb 2018 15:06:21 +0000 fostertom PHPP question - easy to change building orientation? https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265648#Comment_265648 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265648#Comment_265648 Fri, 09 Feb 2018 18:37:27 +0000 RobinB PHPP question - easy to change building orientation? https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265651#Comment_265651 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265651#Comment_265651 Fri, 09 Feb 2018 19:55:18 +0000 djh Posted By: RobinBIt would be interesting to be able to show quickly just why that north facing glazed100% wall is not such a great idea.
A 100% glazed wall is not a good idea in any direction, so I'm not clear how rotating a PHPP model would help.

Equally I'm not sure how effective a PHPP model would be to convince somebody who didn't understand instinctively how something facing towards the sun is different from something hidden from the sun.]]> PHPP question - easy to change building orientation? https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265661#Comment_265661 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265661#Comment_265661 Sat, 10 Feb 2018 08:55:35 +0000 fostertom PHPP question - easy to change building orientation? https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265665#Comment_265665 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265665#Comment_265665 Sat, 10 Feb 2018 10:31:02 +0000 gravelld
That said, there are so many other variables, e.g. on a sloping site I guess arbitrarily rotating the house is going to have a big impact to the foundations, so you're going to need a complicated spreadsheet!]]> PHPP question - easy to change building orientation? https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265738#Comment_265738 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=15563&Focus=265738#Comment_265738 Mon, 12 Feb 2018 16:00:06 +0000 RobinB