ChatterBank3 mins ago
Can anyone help me?
Before reading the instructions, I poured caustic soda down the sink to clear it as the water was running down very slowely. Now the caustic soda has hardened solid and the blockage is worse, no water at all is getting down. Does anyone know how to soften the soda and flush it out?
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Caustic soda (sodium hydroxide) is soluble in water so unless you actually blocked the drain with it, it should clear. If the blockage is in the removable bend under the sink then remove and clean it but keep a bowl or bucket under to catch the waste. You must wear rubber gloves and be very careful of splashes on your face and skin as it will burn you. Keep some clean water nearby to wash with.
If the blockage is further down there maybe rodding eyes for access but if inaccessable try to get hot water down there and poke it with a rod or wire. Be careful of adding further chemicals as there could be an unexpected reaction. Take care.