Adding a Back Vent to the Robson Coat

Last week I promised to show you how easy it is to add a back vent to the Robson Trench coat. It’s as simple as a small pattern adjustment and an extra step in construction.

Caroline's Robson Trench 6This trench doesn’t need a back vent, there is plenty of room built into the shape of the coat. I just like the tailored look of a back vent in a trench coat, so I wanted to see how easy it was to add one! Here’s how you can draft and sew one for yourself.

Robson Trench Vent 6First we need to add an extension to the back pattern piece. You can see my hacked up pattern piece above. I wanted my vent to be around 10″ (25cm) high, and the hem allowance is 1 ½” (4cm). So I marked 11 ½” (29cm) up from the bottom edge of my pattern piece. Then I drew a perpendicular line 2″ (5cm) out from center back edge of the tissue. Finally I drew a line at a 45 degree angle from my center back marking connecting to my extension line. Voila! It makes a sort of half house shape.

Robson Trench Vent 7Before sewing the center back seam, finish the two edges of the vent separately, as shown above on the left. (Excuse the poor photos! I snapped them during sewing night.) Next you can sew the center back seam, pivoting at the 45″ angle and sewing right up the to edge. Then finish the center back seam allowance together as the pattern instructs. When you get to the edge of the vent, fold under the raw edge of the binding and topstitch to the edge.

Robson Trench Vent 2Next we want to press the vent to the left side, and topstitch it in place at an angle. Then you can topstitch your center back seam as you will with all your other seams, stopping when you meet the vent topstitching.

Robson Trench Vent 3 When it comes time to hem, just turn up and topstitch all the way to the edge.

Robson Trench Vent 5Here is what the inside looks like when all is said and done.

Robson Trench Vent 4Pretty nice and clean right? I don’t mind that if the vent flies open in the wind, you get a little flash of my animal print binding!

Robson Trench Vent 1So there you have it! A super easy modification for the Robson Coat. Has anyone else made a trench coat lately? Share a link in the comments so we can see!

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8 Responses to Adding a Back Vent to the Robson Coat

  1. Tabatha Tweedie November 5, 2014 at 6:10 am #

    Hi! I just finished making a polka dot Robson Trench coat! The link is here: http://threadcarefully.org/2014/10/28/my-october-minerva-make-sewaholic-robson-coat/
    I didn’t add a back vent – it never occurred to me, but I like how it looks on yours :-) Louise.

    • Caroline Amanda November 6, 2014 at 7:27 am #

      Your coat is amazing! I love the polka dot fabric. It looks great on you :)

  2. Birgitte November 5, 2014 at 7:53 am #

    Such a beautiful coat Caroline – love it! And now I’m planning on adding a vent to my own Robson coat (have to find the proper fabric first) – thanks!

    • Caroline Amanda November 6, 2014 at 7:28 am #

      Thank you! And no problem :) It’s a great extra detail, I’m happy with the way it turned out!

  3. Annette November 5, 2014 at 10:50 am #

    Beautifully done! Love your coat, wish I could (and I will) sew that good. TFS, Annette

    • Caroline Amanda November 6, 2014 at 7:29 am #

      You will! Just takes practice :) You never really stop learning in sewing, I still have tons of sewing skills I could improve on. That’s what I love about it!

  4. Sherri November 5, 2014 at 7:40 pm #

    I love your contrasting binding! It would make me smile every time I put the coat on.

    • Caroline Amanda November 6, 2014 at 7:30 am #

      It does! Thank you Sherri :)