Leaking conservatory :(

missy321

We've just had done a diy conservatory, a builder built the dwarf wall & my partner & his dad put the frames up... the frames are fine however I had trouble with rain a few weeks ago & phoned the builder, he came back and stillsawed the excess slab that was causing the water to run back into the walls of the conny. Everything was fine until this mad rain we've had the past few days...

Last night I noticed a sml puddle near the patio doors & my partner thinks the seal has broken & water is coming thru. im gutted, the floor we put down is expensive laminate which will need replacing...

Any advice appreciated