Novi Siding Trim | Simple Steps for Installing Trim

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Installing Novi Siding Trim

CAUTION: Remember that polymer undergoes expansion/contraction due to variations in temperature. The following instructions will allow for the expansion/contraction of the material.

Start your siding trim project by determining placement and nailing locations.

1. Locate where you want to install Novi Trim and make sure you have nailing in these locations. If installing on a furred wall, make sure to install furring on the nailing locations. Note that there are two bases to install when using the Wide Trim.

Placement of siding trim bases is very important in order to get a correct and beautiful installation.

2a. Installation around windows and doors or under soffit: Position trim base on the wall keeping 1 3/4" between the base and the window, door, or soffit. Nail as specified in Step 3.

Installing trim around inside corners can be tricky if you don’t follow the proper distance requirements.

2b. Installation of an inside corner: Position the trim base on the wall keeping required distance according to the product depth (see chart below and image above). Nail as specified in Step 3.

Follow this chart for the correct distance from the inside corner based on siding depth.

Proper placement of siding trim bases on outside corners will help improve the finished look of your siding project.

2c. Installation of an outside corner: Position bases along one side of the wall keeping a distance of 1 3/4" from the corner of the wall (#1 in image above) and nail as specified in Step 3. Then position bases along the other wall making the corner letting the base exceed the corner of the wall according to siding depth (see chart below and #2 & #3 in the image above) and nail as specified in Step 3.

Take a look at this placement chart to make sure your siding design project goes off without a hitch.

Take a look at this placement chart to make sure your siding design project goes off without a hitch.

When Wide Siding Trim is used to finish an outside corner, install the colored bases at the extremity of the wall's corner and install the clear bases at the rear of the colored bases (#3 and #4 in the image above).

Outside corner siding depth and trim base distance chart to ensure easy installation and the best look.

2d. Installation back to back: Position base according to desired division of the wall (#1 in image above) and nail as specified in Step 3. Install siding for the first section of the wall (Step 6) and clip the Trim top (Step 7). Pre-assemble the bases and caps (#2 in image above) for the other side of the wall division, place back to back with previously installed Novi Trim (#3 in image above) and nail as specified in Step 3. Remove Novi Siding Trim tops from the bases you just nailed (#4 in image above) so you can install siding on the section of the wall (#5 in the image above and Step 6) then clip the Trim tops back on bases (Step 7).

It is important that siding trim is nail properly for best results.

3. Nail down the center nail first. Make sure the base is straight and leveled. Put nails in the center of each nailing slot on each side of the center hole. A minimum of 7 nails is required per full length base. Never hammer the nails completely down. Always leave 1/16" (see image above).

Straight and level bases nailed properly will keep your siding looking great and lasting long.

4. To install a second base, align the end of the base on the guide line (see image above) and nail base as specified in Step 3.

When installing trim you will need one base for regular trim and two for wide trim.

5. For regular siding trim installation go to the next step. For Wide Trim, install a second clear base next to the first one (see image above).

Clip siding trim to bases as shown for the best look and fit.

6. Install siding or roofing following the guide line located on the base (#1 in image above)

7. Clip Trim to the base starting with one end of the top. Press gradually along the trim until top is clipped uniformly and at the right depth (#2 in the image above).

8. To put two tops together, slide second part in the first part following the guide line (#3 in the image above).

Installing trim around a window frame requires some proper cutting to ensure the best look for the corners possible.

9a. Finishing the corner of a window or door with Trim Corners, Novi Trim, and Novi Wide Trim: Install base around window or door as specified in Step 2a and make sure that they don't exceed the window or door frame on each side (#1 in the image above). Install siding as specified in Step 6. Cut the tops in straight edge and make sure they are shorter than the window or door framing by 1/4" on both sides. Next, clip them onto the bases (#2 in the image above). Insert Trim Corners between the window/door frame's corner and the Trim tops (#3 in image above). Engage properly the Trim Corners' hooks behind the Trim tops (#4 in image above).

Finishing your window using wide siding trim and no corners can create a great look.

9b. Finishing the corners of a window or door trim with Wide Trim; without Trim Corners: Install base around window or door making sure horizontal bases exceed the window or door of 2 1/8" on each side (#1 in the image above). Install siding as specified in Step 6. Cut the tops that will be placed horizontally in straight edge and make sure they exceed the window or door framing of 3 1/2" on both sides. Then clip them on horizontal bases (#2 in the image above). Cut the tops that will be placed vertically at an angle of 45 degrees and clip on bases so they cover the horizontal tops. Cut the inside hooks of the vertical tops so it doesn't interfere with the horizontal Trim (#3 in the image above). Add a small screw (screw #4 x 3/4" anticorrosive) on all four corners on the exterior side of the vertical Trim (#4 in the image above).

Installation Tips

Positioning of siding trim can help minimize the appearance of seams.

1. Pay special attention to the position of Trim molding junctions. For example, when finishing around the door, make sure the seams are at the bottom of the door to make it more subtle (see image above).

Using scrap pieces of siding trim can help you position bases easier.

2. To facilitate installing Trim bases around windows and doors, you can use waste pieces of Trim tops to help positioning the bases. To do so, assemble the Trim cap pieces on bases before positioning them on the wall. Push the assembly on the window or door frame and nail on each side of the pieces. Nail gradually throughout the base by sliding the pieces to maintain a proper positioning. Remove the pieces once nailing is completed and continue with the installation of another base or installation of siding (see image above).

Finishing a side wall first may help with positioning along outside corners for the front façade.

3. When using Wide Trim to finish an outside corner it might be easier to complete the installation of the siding on side walls before installing trim bases on the front of the outside corners. By doing so, it is easier to align the bases of the front wall to the thickness of the siding on the side walls (see image above).

If you can’t nail the wide siding trim in the proper place, you may need to make a new nail slot as pictured.

4. When using Wide Trim to finish an outside corner, it may happen that you cannot nail in the last nailing hole located at each end of the base because the nail will not penetrate a solid surface (#1 in the image above). In this case, we recommend you to solidify the installation by making a new 1" long slot at each end of the base nail in these locations (#2 in the image above).

Spacer block can help keep siding trim corners straight and provide a better look.

5. When installing Trim Corners you may need to straighten up the Trim tops at the junction between the Corners and tops to get a better look. We suggest you put some spacer blocks or screws under the Trim tops to level the assembly. CAUTION: Do not block the expansion/contraction movement of siding. To do so, practice small incisions 1" long on the siding and screw through them (see image above).