From 2a0cf05fdd72d8872ec2db9635804db79b493442 Mon Sep 17 00:00:00 2001 From: Khalim Conn-Kowlessar Date: Fri, 3 Jul 2026 16:08:57 +0000 Subject: [PATCH] =?UTF-8?q?Amend=20ADR-0051:=20the=20floor=20U-value=20gat?= =?UTF-8?q?e=20landed;=20roof=20stays=20evidence-gated=20=F0=9F=9F=AA?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Co-Authored-By: Claude Opus 4.8 --- ...ed-only-when-it-lowers-the-derived-wall-u-value.md | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/docs/adr/0051-wall-insulation-offered-only-when-it-lowers-the-derived-wall-u-value.md b/docs/adr/0051-wall-insulation-offered-only-when-it-lowers-the-derived-wall-u-value.md index 90db6f335..8b63c4f0d 100644 --- a/docs/adr/0051-wall-insulation-offered-only-when-it-lowers-the-derived-wall-u-value.md +++ b/docs/adr/0051-wall-insulation-offered-only-when-it-lowers-the-derived-wall-u-value.md @@ -54,9 +54,14 @@ materiality threshold — economics stay with the Optimiser, ADR-0016/0024). precedent as the heating generator reading the calculator's PCDB/Table 4b. - **Deferred:** (a) a cert that lodges an explicit `wall_u_value` overrides the cascade in the calculator, making fabric measures score +0.00 regardless of - this gate — the measure overlay should adjust the lodged U; (b) roof/floor - generators have the same anti-pattern in principle (roof age-band eligibility - is partly covered by ADR-0047); both tracked as follow-ups. + this gate — the measure overlay should adjust the lodged U (probed on + portfolio 796: 0/300 sampled certs lodge one, so no live evidence yet); + (b) roof/floor generators have the same anti-pattern in principle (roof + age-band eligibility is partly covered by ADR-0047). **Amended:** the floor + arm landed as `floor_u_value_gate` (probed live: solid_floor_insulation at + £3-4k for +0.00 on age-band-L dwellings 709782/709790); a 40-dwelling + band-K/L probe found no roof no-ops, so the roof arm stays unimplemented + until evidence appears. ### Alternatives rejected