MONJI is a reliable Japanese roofing material that has both traditional beauty and excellent workability.
MONJI blends traditional Japanese beauty
with modern technology to harmonize with
nature and create a sense of wabisabi.
Lateral roofs made of sheet copper are used often in teahouses, temples, and shrines.
The elegance of the horizontal line and gentle appearance carved by history create the exterior beauty that is essential to traditional Japanese architecture. MONJI is a reliable Japanese roofing material that has both traditional beauty and excellent workability. It is available in many variations, including sheet copper, colored sheet steel, and colored stainless steel.
This product can be joined with one touch just by inserting the standing seam and pulling. It is scratch resistant and much easier to work with.
The product features expansion joints, which prevent warping from contraction and elongation due to heat expansion.
The seams on old, sheet copper lateral roofs sometimes crack. These cracks are thought to have formed in areas of work-hardening from strong pressure put on the inside when bending the ends with a sharp blade. In order to prevent this, our MONJI are designed so that all seams are R-processed to make them resistant to work-hardening.
Easy for one person to carry and work with.
MONJI offers a unified product standard not only for its main parts but also for detail materials, to ensure beautiful roofing with excellent workability.
Both corner ridge and curved valley are special parts that are made of copper.
All models have the following six types of panels. Please check the intended use before choosing.
Use when roofing from left to right facing the roof surface.
Use when roofing from right to left facing the roof surface.
Use for the center when roofing the left and right separately.
Use when roofing from left to right for the first row when using an L-Bent eave flashing.
The end is more rigid, which improves wind resistance. Drains well and makes a beautiful finish.
Use Field Panel Right from the second row.
Use when roofing from right to left for the first row when using an L-Bent eave flashing.
Use Field Panel Left from the second row.
Use for the center of the first row when roofing the left and right separately and using an L-Bent eave flashing. Use Field Panel Center from the second row.
| thickness | ounce | |
|---|---|---|
| C 1220 Cu 99.90Min |
0.35㎜ | 102.0z |
| 0.4㎜ | 117.0z | |
| 0.5㎜ | 146.0z |
| SUS304 | 0.3㎜ | 0.35㎜ | 0.4㎜ |
|---|---|---|---|
| Matte black | |||
| Matte brown | |||
| Matte gray | |||
| Matte forest green | |||
| Matte hunter green | |||
| Copper brown | |||
| Caramel brown | |||
| Metallic gray | |||
| Silver |
Matte black
Matte hunter green
Copper brown
Matte forest green
Caramel brown
Metallic gray
Silver
Matte brown
Matte gray
| 0.35㎜ | 0.4㎜ | |
|---|---|---|
| No.517 emerald | ||
| No.527 olive | ||
| No.538 pearl brown | ||
| No.539 dark brown | ||
| No.540 black | ||
| No.570 brushed silver |
No.540 black
No.527 olive
No.538 pearl brown
No.539 dark brown
No.570 brushed silver
No.517 emerald
| Exposure Height and length | Area of 1 piece | Pcs. per 1m2 Pcs. per 1ft2 |
|---|---|---|
| 130㎜ x 1,224㎜ | 0.159m2 | 6.29 pcs/m2 |
| 5 1/8" × 48 3/16" | 1.711ft2 | 0.584 pcs/ft2 |
| Exposure Height and length | Area of 1 piece | Pcs. per 1m2 Pcs. per 1ft2 |
|---|---|---|
| 150㎜ x 1,224㎜ | 0.184m2 | 5.43 pcs/m2 |
| 5 15/16" × 48 3/16" | 1.981ft² | 0.505pcs/ft² |
| Exposure Height and length | Area of 1 piece | Pcs. per 1m2 Pcs. per 1ft2 |
|---|---|---|
| 175㎜ x 1,224㎜ | 0.214m2 | 4.67 pcs/m2 |
| 6 7/8" × 48 3/16" | 2.303ft² | 0.434pcs/ft² |
| Exposure Height and length | Area of 1 piece | Pcs. per 1m2 Pcs. per 1ft2 |
|---|---|---|
| 182㎜ x 1,224㎜ | 0.223m2 | 4.48 pcs/m2 |
| 7 3/16" × 48 3/16" | 2.400ft² | 0.417pcs/ft² |
| Exposure Height and length | Area of 1 piece | Pcs. per 1m2 Pcs. per 1ft2 |
|---|---|---|
| 227㎜ x 1,224㎜ | 0.278m2 | 3.60 pcs/m2 |
| 8 15/16" × 48 3/16" | 2.992ft² | 0.334pcs/ft² |
| Exposure Height and length | Area of 1 piece | Pcs. per 1m2 Pcs. per 1ft2 |
|---|---|---|
| 251㎜ x 1,224㎜ | 0.307m2 | 3.26 pcs/m2 |
| 9 7/8" × 48 3/16" | 3.305ft² | 0.303pcs/ft² |
Thickness: 0.35㎜
| Model | Roof slope |
|---|---|
| 130 150 175 182 |
3/10~4.5/10 (3.6/12~5.4/12) |
| 227 250 |
3/10~3.5/10 (3.6/12~4.2/12) |
| 4/10~4.5/10 (4.8/12~5.4/12) |
*When you order Alternate Starter Panel specify "For Alternate Starter Panel" please.
*Material is Copper Sheet only.
Thickness: 0.35㎜
| Model | Roof slope |
|---|---|
| 130 150 175 182 |
3/10~5/10 (3.6/12~6/12) |
| 227 250 |
3/10~4/10 (3.6/12~4.8/12) |
| 4/10~5/10 (4.8/12~6/12) |
*It can correspond to all materials.
*When you order Alternate Starter Panel, specify "For Alternate Starter Panel" please.
Thickness: 0.35㎜
| Model | Roof slope |
|---|---|
| 130 150 175 182 |
3/10~4.5/10 (3.6/12~5.4/12) |
| 227 250 |
3/10~3.5/10 (3.6/12~4.2/12) |
| 4/10~4.5/10 (4.8/12~5.4/12) |
*Material is Copper Sheet only.
| Model | Roof slope |
|---|---|
| 130 150 175 182 |
3/10~5/10 (3.6/12~6/12) |
| 227 250 |
3/10~4/10 (3.6/12~4.8/12) |
| 4/10~5/10 (4.8/12~6/12) |
*Material is Copper Sheet only.
The elution of copper plates, may affect carp in ponds. Do not allow rainwater from the roof to lead directly into ponds.
When installing a “koshibuki” or framed roofing with copper plate, the roof tiles may accelerate corrosion of copper plates. It is recommended to perform two-layer roofing of parts connecting roof tiles.
An installation guide can be downloaded. Read the guide first for proper installation.
Install MONJI using specifications that are compatible with the architectural purpose and geographic region in accordance with building codes, fire protection laws, and other laws and ordinances.