STEP 3:SIDING TRIM

J-Trim

 

 

J Trim is used to finish and protect the edges of metal siding panels at wall terminations, as well as around doors, windows, and other openings.

 

It provides a secure channel for panel edges, helping prevent water intrusion while allowing for proper panel movement.

 

J trim also delivers a clean, polished appearance by neatly covering cut edges and completing the siding system.

 

How To Calculate For J-Trim

-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-

To calculate the amount of J-trim required, measure every exposed edge where siding panels will terminate. This includes:

 

• The full width along the top edge of the siding panels

 

• The bottom and sides of all windows

 

• The sides of doors and any other wall openings

 

Add these measurements together to get your total J-trim length. Our trim comes in 10' lengths, so round up to the nearest 10 and divide by 10 to get the amount you will need (allow for a 1" - 2" overlap).

 

Refer to the attached diagram and measure all areas highlighted in red. These red sections show exactly where J trim is installed to neatly finish and protect the edges of the siding.

Drip Trim

 

 

Drip Trim is installed along the top of doors, windows, and other openings to direct water away from the building and prevent moisture from running back behind the panels.

 

It helps protect the wall assembly, panels, and other trim from water damage while promoting proper drainage.

 

Drip trim also creates a clean, finished edge, improving both performance and appearance of the metal siding system.

 

How To Calculate For Drip Trim

-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-

To calculate the amount needed, measure the top width of all windows, doors, and any other wall openings that require water deflection.

 

Add these top measurements together to get your total drip trim length. Our trim comes in 10' lengths, so round up to the nearest 10 and divide by 10 to get the amount you will need (allow for a 1" - 2" overlap).

 

Refer to the attached diagram and measure all areas highlighted in red, which indicate where drip trim is installed above openings.

Base Trim

 

 

Base Trim is installed at the bottom of a metal siding wall where the panels meet the foundation or slab.

 

It provides a clean starting point for siding panels while directing water away from the wall system.

 

Base trim helps protect the lower edge of the panels from moisture, debris, and impact damage, and creates a finished, professional appearance at grade.

 

How To Calculate For Base Trim

-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-

Measure the entire perimeter of the building where siding will be installed. This includes all exterior walls, but excludes areas where siding does not run to the bottom (such as garages, doors, windows, or raised sections, if applicable.

 

Add these measurements together to get your total base trim length. Our trim comes in 10' lengths, so round up to the nearest 10 and divide by 10 to get the amount you will need (allow for a 1" - 2" overlap).

 

Refer to the attached diagram and measure all areas highlighted in red, which show where base trim is installed along the bottom of the siding.

Outside Corner With J

 

 

Outside Corner with J is used at exterior wall corners in metal siding applications, combining an outside corner profile with integrated J channels on both sides.

 

It securely captures the edges of siding panels, helping manage water runoff while allowing for proper panel movement.

 

This trim protects exposed panel edges and delivers a sharp, finished corner appearance, completing the metal siding system with both durability and clean lines. 

 

How To Calculate For Outside Corner With J

-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-

To calculate the amount needed, measure the full height of each outside corner from the base trim to the top of the siding.

 

Multiply the corner height by the number of outside corners on the building to get your total outside corner length. Our trim comes in 10' lengths, so round up to the nearest 10 and divide by 10 to get the amount you will need (allow for a 2" - 4" overlap).

 

Refer to the attached diagram and measure all areas highlighted in red, which show where outside corner with J is installed.

 

You will need to measure each if there are varying heights on your structure.

Inside Corner With J

 

 

Inside Corner with J is used at interior wall corners in metal siding applications, combining an inside corner profile with integrated J channels on both sides.

 

It captures and secures the edges of siding panels at the corner while helping manage water runoff and allowing for proper panel movement.

 

This trim protects cut panel edges and creates a clean, professional finished look where two walls meet. 

 

How To Calculate For Inside Corner With J

-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-

To calculate the amount needed, measure the full height of each inside corner from the base trim to the top of the siding.

 

Multiply the corner height by the number of inside corners on the building to get your total outside corner length. Our trim comes in 10' lengths, so round up to the nearest 10 and divide by 10 to get the amount you will need (allow for a 2" - 4" overlap).

 

Refer to the attached diagram and measure all areas highlighted in red, which show where outside corner with J is installed.

 

You will need to measure each if there are varying heights on your structure.

Our Team Is Here To Help

Getting this right isn't always easy - our team has years of experience and will happily assist with any questions regarding your project!

Step 4 >>>

<<< Step 2