I have 2 doors to put into a stud wall.
I assume i should make a 10mm all round allowance to fit in the door casing (32mm pine) when fitting the regularised timber (45x95mm), so the vertical stud timbers would be (10+32)+3+door width(812mm)+3+(10+32) = 904mm apart, edge to edge. (3mm clear margin)
Being in a loft I also assume the door casings should be 'Firecheck' ?
What width door casing should I specify, looking at my Selco catalogue I am confused by the door casings widths, sold in 115mm or 138mm. Using a 95mm wide stud timber, with a layer of plaster board each side makes the wall width 120mm (95+12.5+12.5), 115 or 138mm. When the architrave is put on, if using a 138mm width casing leaves a 9mm gap each side round the back of the architrave. I could put an extra layer of plasterboard on to help maybe ? is it normal practice to simply fill in the gap - seems a bit odd I cant buy a casing that is better suited, or is that just how it is ?
Thanks.
I assume i should make a 10mm all round allowance to fit in the door casing (32mm pine) when fitting the regularised timber (45x95mm), so the vertical stud timbers would be (10+32)+3+door width(812mm)+3+(10+32) = 904mm apart, edge to edge. (3mm clear margin)
Being in a loft I also assume the door casings should be 'Firecheck' ?
What width door casing should I specify, looking at my Selco catalogue I am confused by the door casings widths, sold in 115mm or 138mm. Using a 95mm wide stud timber, with a layer of plaster board each side makes the wall width 120mm (95+12.5+12.5), 115 or 138mm. When the architrave is put on, if using a 138mm width casing leaves a 9mm gap each side round the back of the architrave. I could put an extra layer of plasterboard on to help maybe ? is it normal practice to simply fill in the gap - seems a bit odd I cant buy a casing that is better suited, or is that just how it is ?
Thanks.
