Dpc question

[Deluks]

You don't need two DPMs, is this house built in a river?

The weight of concrete will push the dpm against the wall, as long as it meets the dpc you'll be alright with a mastic bead behind it.

 

[markus2025]

lol yeah its not in a river but below the outside road level and always had a history of rising damp as it was my late grans house so i kind of want to make sure i fully solve the issue

 

[markus2025]

You can see on here the dpc is at the ffl ive put min at the purple line yet my ffl is 2 bricks above will this matter

 

[markus2025]

What do i do over a door opening ?

 

[noseall]

You can see on here the dpc is at the ffl ive put min at the purple line yet my ffl is 2 bricks above will this matter

No.

 

[noseall]

What do i do over a door opening ?

Over or at the sill detail?

Remove the inner leaf of masonry courses, to below the insulation level. Close of the cavity (if there is one). Allow the membrane to travel into the opening recess and wrap up against the sill masonry and jambs. Insulation too. You might want to forfeit the perimeter insulation upstand against the sill masonry, or trim the height, as this can be an issue when fitting gripper rods later on. Concrete or screed right up to the back of the outside course.