First clamp the arched trim to the jamb making sure the reveal is consistent along the jamb.
Arched window trim install.
As far as the arches it was a local craftsman i found when googling arch trim austin texas i live in the austin area.
If the molding is not custom made to the window the molding must be.
How to install arched window trim step 1.
Placing the window stool in start by placing one of the side trims against the side of the window.
As far as adding them i literally just nailed them on following the arch of the window.
On both sides mark where the circle starts to turn in.
Pre installation considerations the radius of the semicircle within a half round is exactly half of the diameter.
The cost was around 240 total if memory serves me right i have a memory of 80 window.
Then line up a straight edge with the marks and draw the cut lines.
Two pieces were cut and reconstructed to create the arch above the eyebrow window.
How to trim arched windows two types of arches find the arch cut the arch mitered arch.
To make the cuts on a miter saw support the free end of the circular trim in back of you.
Installing a 5 trim for more details on how to install arch trim around your windows read about this arch molding installation.