
Roof Drainage Toward SW Prohibition
Roof drainage toward SW is among the most severe Vastu defects. Rain is heaven's
Local term: रूफ ड्रेनेज रीडायरेक्शन — गटर रीरूटिंग / डाउनपाइप रीपोजिशनिंग (Roof Drainage Redirection — Gutter Rerouting / Downpipe Repositioning)
Modern plumbing can easily redirect roof drainage from SW to NE. Gutter re-routing is one of the most cost-effective Vastu corrections available. Underground drainage pipes can carry SW-collected water to NE discharge points. This is a practical, affordable remedy that does not require structural modification.
Source: All classical texts; modern plumbing standards
Unique: Most cost-effective Vastu correction — gutter redirection at minimal cost.
Roof Drainage Toward SW Prohibition
Architectural diagram for Roof Drainage Toward SW Prohibition
The Rule in Modern Vastu
Ideal
NE, N, E
All gutters and downpipes toward NE, per modern Vastu consensus integrating classical prescriptions with contemporary building practice — the architect must verify compliance for optimal results.
Acceptable
SE, NW
SW water captured and piped to NE outlet.
Prohibited
SW, S, W
Roof drainage directed toward the SW is the most severe water-direction defect in Vastu. Rain — heaven's Prana in liquid form — is sent directly to the domain of Nirrti (decay, destruction, death). Every rainfall event activates the defect: the dwelling actively channels divine blessing toward the darkest corner of the cosmic mandala. This is Nairitya Vrishti Patana (SW rain-fall) — financial drain correlating with water drain.
Sub-Rules
- No roof drainage reaches the SW — all water directed N/NE/E▲ Major
- Primary roof drainage flows toward SW corner▼ Critical

Roof drainage toward SW is among the most severe Vastu defects. Rain is heaven's Prana in liquid form — directing it to the Nairitya (SW) domain of Nirrti (decay) is Lakshmi-Tyaga (prosperity-abandonment). Every rainfall activates the defect. The correlation is direct: water drains to SW, wealth drains from the household.
Common Violations
Primary roof drainage toward SW — gutters, slopes, and downpipes directing water to the SW corner
Traditional consequence: Nairitya Vrishti Patana at maximum severity. Financial loss correlates with water loss to SW. Each rainfall event activates the defect — the dwelling performs Lakshmi-Tyaga (prosperity-abandonment) with every monsoon. This is the most reliably negative water-direction correlation in Vastu literature.
Even partial SW drainage — one slope face or one downpipe directing water to SW among multiple drains
Traditional consequence: Partial Nairitya Vrishti Patana. While not as severe as total SW drainage, even one channel of divine water reaching the Nirrti domain activates the defect. The single SW drain is a crack through which prosperity leaks.
How Other Traditions Compare
Relative to Modern Vastu
Vedic Lakṣmī Tyāga — the dwelling itself abandons prosperity.
Wada Parnālā exclusively at Ishaan — zero SW drainage infrastructure.
Tamil absolute prohibition — Sthapati held responsible — distinctive to Agama Sthapati practice per the Mayamatam and Kamika Agama.
Telugu top-three defect ranking — alongside cut NE and enlarged SW.
Jain Pāpa framing — SW drainage as a moral transgression — distinctive to Hoysala-Jain practice per the Manasara and Aparajitapriccha.
Kerala monsoon amplification — 3000mm annual rainfall makes SW drainage catastrophic.
Jain Aparādha framing — SW drainage as an offence against cosmic order.
Bengali plumb-line verification — physical measurement to prevent SW tilt.
Kalinga temple precision — zero SW drainage demonstrated at monumental scale.
Punjabi builder's proverb — SW drainage equals wealth destruction.
Terms in Modern Vastu
Universal:
Remedies & Solutions
Structural correction per Modern building proportion guidelines
Modern VastuRedirect all gutters and downpipes away from SW — reroute to NE, N, or E corners. This is the most effective single-action remedy for this defect.
If the roof slope itself faces SW and cannot be modified, install a gutter at the SW eave that channels all collected water via underground pipe to the NE corner of the plot
Install a rainwater harvesting tank at the SW drain point — capturing and storing the SW-directed water prevents it from draining away as waste
Add a secondary roof canopy over the SW quadrant that reverses the local drainage direction — collecting water that would reach SW and channelling it to a NE-directed gutter
Remedies from other traditions
Structural correction per Vedic building proportion guidelines
Vedic VastuStructural correction per Maharashtrian building proportion guidelines
HemadpanthiClassical Sources
“The Chhadya shall never shed Varsha Jala toward Nairitya. Water flowing from the Gruha's crown to Nirrti's domain is Dhana-Kshaya (wealth-decay) in liquid form. Each monsoon compounds the loss. The Sthapati who directs water toward Nairitya directs the owner's Lakshmi (wealth) toward the drain.”
“Varahamihira warns with the highest severity: Nairitya Vrishti Patana is among the worst Gruha Dosha. When Indra's water falls upon the dwelling and the dwelling sends it to Nirrti, this is the house itself committing Lakshmi-Tyaga (abandonment of prosperity). The correlation is direct — water drains to SW, wealth drains from the household.”
“If the Kooda Meippara sheds Mazhai Neer toward Thennmerku (SW), the Veedu suffers Poruladal Azhivu (wealth destruction). The Deiva Thanneer that fell as blessing is converted into a curse by being directed to the Nirrti Moolai. The Sthapati must under no circumstance slope the Meippara toward Thennmerku.”
“Vishvakarma pronounces: the Chhappar draining toward Nairitya is the Gruha's greatest water-sin. Varsha is Deva-Kripa (divine grace) — sending it to Nirrti is Kripa-Parityjaga (grace-abandonment). The dwelling itself performs the abandonment with every rainfall.”

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