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How To Handle Irregularly Shaped Columns
Anything Other Than a Perfectly Straight Edge


Regularly-shaped Columns

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outdoor plastic enclosureshow to screen roomA regularly shaped column has a perfectly straight edge from ceiling to floor. A 4in x 4in support post or, a 2ft x 2ft square-base, stucco column would be examples of regularly shaped columns. Regularly shaped columns are easy to seal to since the column has a straight continuous edge and the side binding of the curtain has a matching straight edge. The side binding can easily seal against a regularly shaped column using marine. It is perfectly acceptable to have 2 separate curtain panels meet and seal independently to either side of a regularly shaped corner column. See Video

Irregularly-shaped Columns

screened porchDIY screened in porchIrregularly-shaped columns do not have a perfectly straight edge from ceiling to floor. Examples are fluted, spindled, tapered, or bungalow-style columns. Because the straight edge of the curtain will not match the non-linear edge of the column, you cannot achieve a good seal. Instead, you must seal adjacent curtain panels to each other as described in Sealing doorways. The good news is that the whole reason we came up with Mosquito Curtains is that we didn't want to frame around those beautiful columns in order to staple permanent screening to a flat surface.

If at all possible, you should NOT have 2 curtain panels meet at an irregularly shaped corner support column because a corner panel-to-panel seal is weak. If you choose, you can have a panel-to-panel doorway at an irregularly shaped column that is not on a corner (to hide the doorway seam behind the column). The panel-to-panel doorway gives you your seal, and a marine snap securing one of the side bindings to the irregularly shaped column will add stability.

Tracking Trick For Very Large Column Caps

Sometimes irregularly shaped columns create obstacles at corners where the 90-degree curved track won't clear a column cap. And as mentioned above, you can't seal curtains to this type of column nor do the magnets hold panels together very well at a corner. When you get into any of the tricky configurations below, it is best to order the track first and mount it rather than try to figure all the trigonometry. Once it is up, measure the track to determine panel takes an extra step, but it is a whole lot easier.

Two 135-degree tracks spliced together will form a 90-degree curve. A 135-degree curve starts as a 24" straight track that is machine bent where only the center 8" forms the arc. The first and last 8 inches of the track are straight.

135-degree Track

8" S


→ 8" C


→ 8" S


Two Full 135-degree Tracks Spliced

Two FULL 135-degree tracks spliced together would clear an 8.25" column cap

8"S → 8"C → 16"S → 8"C → 8"S


But you can cut the center 16" down to a minumum of 4" to clear a 4.25" Cap

8"S → 8"C → 4"S → 8"C → 8"S

Or insert a straight track between the two 135-degree tracks to clear anything .

8"S → 8"C → any"S → 8"C → 8"S

The photo to the right shows the use of four 135-degree curves to create a "bump out" around one column cap that seemed to get in the way of this project.
135-degree strategy

Getting Around a Large Corner Column Cap

screaned-in porchporch screened in with mosquito netting

Odd Snaking Using 4 Curves

screaned-in porchporch screened in with mosquito netting