Help! Hole under my new front door leaving exposed joists.

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24 Dec 2011
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Location
Tyne and Wear
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United Kingdom
Have just had an oak front door and sidelights fitted, custom made and fitted by a joiner recommended by a trusted builder.
The joiners had to remove a few bricks either side of the door to make a floor level space for sidelights and also remove a concrete step which turned out to be about a foot deep of solid concrete. They used a breaker (?) to do this and consequently left a hole under the door frame and did minor damage to some bricks at the sides. was told the hole was not a problem as said trusted builder would just put some bricks under. Internally the hole was covered by a hardwood cill. When the builder came to relay paving stones outside of door, he pointed out to me that the joists of the floor were exposed under the door frame. The builder has tried to stick a damp proof membrane under door and stuffed concrete under but obviously this isn't ideal. He suggested that the joiner remove the cill and try to fill underneath from inside to make it watertight. Does this sound like a possible solution? I am way out of my depth here and worried sick.
 
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Hi
Have created an album with photos of the door - first time i've done this so I hope the pictures are accessable. Unfortunately the hole is not really visible without removing the internal cill, all the pics show is the crumbly cement put in by the builder to keep the rain out.
kath.
 
Get the joiner to take up the cill again, it will need to come up to address the problem and he should have never put it down. Sounds like the builder has just exacerbated the problem.

Post the pics you have so far in your thread and the ones showing the scoundrels' dodgy workmanship like this:

 
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[/img] View media item 49845
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View media item 49848
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thanks so much for explaining how to upload pics. :D
 
From what i can make out the floor joists that you say are visible should be sitting on the internal leaf of brick or blockwork.
Looks to me like your trusty builder needs to brick up under your new door (outer leaf) rather than just slap some concrete into the space. He'll also need to put a length of damp between new brickwork (under door) and the cill.
You're only looking at a few hours work here.
 
EB1caneyB - thanks so much for some reassuring advice. Do you know whether I should be concerned about penetrating damp if the seal isn't tight as it would have been had the frame been set on a flat surface.
 
Sometimes when bricking up under a door frame there is an inevitable gap. This can later be sealed using frame sealant. There should only be a gap of 5mm max if he bricks it up right.
With a wood frame it is important that he gets a length of damp under it though. Otherwise any damp in the brickwork under the door will soak up into the door frame.
I am only giving you this advice from what i can make out from the photos provided.
 

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