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I’m having an issue with air flowing back through the plumbing system and siphoning dry the shower trap causing a smell in the bathroom.
I’ve teed the main 4 inch pipe up into the loft. Would putting a vent cowl or air admittance valve at the end of this pipe in the loft solve the issue.
The shower tee is before this.
I’ve teed the main 4 inch pipe up into the loft. Would putting a vent cowl or air admittance valve at the end of this pipe in the loft solve the issue.
The shower tee is before this.