I have a new (ca 9 month old) house from a reputable builder. The house is white rough cast/pebble dash or whatever it is called - scratch coat went on, white cement type base layer and then little white stones were thrown at the render to create the finish.
I've recently started to get water in my lounge from the bay window roof area and the builder has come out and replaced the lead flashing but it still gets in usually when it is wet and windy together. On closer inspection it appears to be water coming from the cavity as they removed the plaster board on the ceiling and you could see the bottom of the lintel was wet as water is being stopped by the damp proof course and pushed to the outside edge of the lintel where it seeps through the mortar bed.
They then used a scope to try and understand why water was getting through the cavity tray above the DPC and found a crack in the plastic. They have proposed to come next week and remove a few bricks to repair that and in the mean time sealed up the weep vents as that was where the water was coming from due to the wind driving rain in the vents.
Last night, with my weep vents completely sealed we had yet more water get in to the lounge (not a lot though). Is there any other way that water can enter the cavity in my house? I assume if the cavity tray is there it has a purpose! Will my rough casting not make the brickwork completely water proof or could water still get driven in by rain and wind?
Any advice appreciated.
I've recently started to get water in my lounge from the bay window roof area and the builder has come out and replaced the lead flashing but it still gets in usually when it is wet and windy together. On closer inspection it appears to be water coming from the cavity as they removed the plaster board on the ceiling and you could see the bottom of the lintel was wet as water is being stopped by the damp proof course and pushed to the outside edge of the lintel where it seeps through the mortar bed.
They then used a scope to try and understand why water was getting through the cavity tray above the DPC and found a crack in the plastic. They have proposed to come next week and remove a few bricks to repair that and in the mean time sealed up the weep vents as that was where the water was coming from due to the wind driving rain in the vents.
Last night, with my weep vents completely sealed we had yet more water get in to the lounge (not a lot though). Is there any other way that water can enter the cavity in my house? I assume if the cavity tray is there it has a purpose! Will my rough casting not make the brickwork completely water proof or could water still get driven in by rain and wind?
Any advice appreciated.