TIANLICHUJU — PERSONAL VERIFICATION WORKSHEET
A bright bedroom that also becomes dark enough at night
https://tianlichuju.com/journal/a-bright-bedroom-that-also-becomes-dark-enough-at-night/

PROPOSED CHECKS — NO MEASURED RESULTS SUPPLIED
Date: __________________  Units: __________________
Room / product reference: __________________

1. Nighttime light path
Where: At the normal pillow position when the unwanted streetlight or early light is actually present.
Record: Sketch whether brightness comes through cloth, above the track, beside the treatment, or between panels; note the time and curtain position.
Your observation: ______________________________________________
Interpretation: The sketch distinguishes leakage routes in that condition; it cannot rate the fabric or predict another season's exterior lighting.
Alternative: Address the identified coverage gap or practical layer rather than replacing the visible fabric without changing the installation.

2. Coverage and stack
Where: Across the full window with each proposed layer separately open and closed.
Record: Measure opening, overlap, side coverage, projection, and stacked fabric widths in centimeters; mark handles and nearby furniture on the same drawing.
Your observation: ______________________________________________
Interpretation: Dimensions support a fitting discussion, but no universal overlap amount or complete light exclusion follows from this worksheet.
Alternative: Revise the track or use independently operated layers if the proposed arrangement sacrifices daylight or blocks window access.

3. Daily operation and removal
Where: At the actual operating point and the locations used to remove fabric or service the blind.
Record: Note reach, interfering objects, the specified safe-control method, and which components must be detached for cleaning.
Your observation: ______________________________________________
Interpretation: The sequence tests convenience, not cord safety, escape compliance, or suitability of an improvised mounting.
Alternative: Choose a simpler supported system or change its location when safe operation and maintenance cannot both be preserved.

PRACTICAL TRIAL
1. Observe gaps from the pillow without clearing furniture for the photograph.
2. Review the supplier's installed coverage drawing, not only the fabric description.
3. Keep ventilation, required escape access, and product-safe controls within the fitting plan.

COMPARE THE SAME SCOPE
- Practical light-control layer and visible curtain
- Track projection, returns, overlaps, and stack space
- Removal, cleaning, operating hardware, and fitting
Cost drivers: Window shape and mounting substrate; Separate tracks or powered operation; Made-to-measure lining and installation access
Choose another route when: A decorative sheer alone is unsuitable when the identified problem is unwanted nighttime light that its installed fabric and coverage do not address.

EVIDENCE BOUNDARY
This is a window-leakage observation plan, not a sleep study, blackout certification, or performed safety inspection. Daytime shift-work constraints require their own schedule review.

PHOTO REFERENCE
A bed and bedside lamps sit between orange-toned walls and windows framed by pale blue curtains.
https://commons.wikimedia.org/wiki/File:Chambre_de_cat%C3%A9gorie_ex%C3%A9cutive_style_transition.jpg

DECISION CONDITIONS
choose: Choose the practical control layer after identifying the actual nighttime leakage path from the pillow, then coordinate an outer curtain for appearance, privacy, and convenient separate operation.
alternative: Change overlap, track position, side coverage, or stack space when the problem is an installation gap rather than the visible fabric's overall appearance.
stop: Stop a layered proposal if it obstructs necessary window operation, access, safe controls, or a cleaning method the household cannot reasonably perform.

PUBLISHED REFERENCES
IKEA VIDGA curtain system buying guide, January 2022
https://www.ikea.com/us/en/files/pdf/14/94/1494fc8f/vidga_jan_2022_np.pdf
The dated VIDGA guide illustrates parallel rails carrying sheer and outer curtain layers, and separate panel-curtain combinations. It documents a way to give layers distinct operation; the drawings do not establish complete darkness or eliminate gaps in another window installation.
Scope: Historical VIDGA system examples explain arrangement only; current components, mounting suitability, and light exclusion must be checked separately.
Photographer: Sgbelley
Licence: CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0

Notes: ________________________________________________________