Fill Gap Under Door Threshold Cement

Put in a new exterior door that fits really well and sits very well on the concrete perimeter foundation.
Fill gap under door threshold cement. Door thresholds come in a variety of materials such as wood marble and metal and make the transition from doorway to floor smooth and easy. We ve been having some issues with water leaking into our basement under our front door. Learn how to install the threshold on a concrete slab floor employing varying methods that include the use of screws or fasteners and adhesives. There s a wide ugly gap between my concrete outdoor patio slab and the slab my house is built on.
I m trying to determine whether to caulk the crack or fill it with some cement based patching. We ve noticed water damage in our sunroom which is bordered on one side by our concrete patio. I recently installed a new metal exterior door between my garage and basement. After a quick investigation we believe that water has entered the gap between the patio and the foundation.
The concrete floor was very crooked so after installation there is about a 1 2 gap at one end under the sill plate that was attached to the door. I m a complete diy newbie so please be gentle. There are a number of weatherproofing issues we need to address but the most urgent is the concrete sill under the door which has been crumbling for a while and presumably is the source of our leak. Every time i step on that corner of the threshold it sags.
Fill in gaps between crown moulding and baseboards. Fill the gap between a concrete patio and house. Use to install wood paneling without nails. I ve noticed an awful draught coming from under the front and back doors so had a look and there is a huge gap between the concrete floor and the wooden bit under the door frame as seen in the pics.
Seal a door frame in place and seal the subfloor at the bottom of a door frame. On the outside portion of the door the threshold sits in the corner of a concrete patio that slopes away from the house. Because of this the downhill side has about 1 4 3 8 gap. I shimmed it during installation to get it all square but now i would like to fill in that area and remove the shims.
Our first home is only two years old. Lasts 10 to 15 years but breaks down faster if exposed to water often.